Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination

Mafic dikes preserve a considerable amount of geological information about crustal evolution. Yanshanian granitoids and granitites are widespread in the southern margin of the North China Craton (NCC) and northern Qinling Orogenic Belt (NQOB), respectively. However, further study is required to resolve the many contrasting hypotheses relating to the mechanisms of petrogenesis and origins. The present study therefore reports on geochemical, geochronological, and Sr-Nd-Pb isotopic data for a suite of mafic dikes in the Mokou area of the NQOB, central China. The Mokou dikes are composed of diabase and lamprophyre intruded into the Kuanping Group (Pt3). The zircon U-Pb ages of two diabases and one lamprophyre were 132 ± 3 Ma and 132 ± 1 Ma, and 132 ± 1 Ma, respectively. The ages of a total of 126 zircon grains from three rock samples were assigned to nine age groups: ~2.2 Ga, ~946 Ma, ~519 Ma, ~440 Ma, ~413 Ma, ~385 Ma, ~160 Ma, ~145 Ma, and ~132 Ma. This complex zircon age spectrum corresponds to regional magmatic or metamorphic events from the Paleoproterozoic to the Early Cretaceous. We determined that the Mokou dikes are dominantly alkaline rocks that belong to the shoshonite and high-K calc-alkaline series. The Mokou dike samples were enriched in large ion lithophile elements (e.g., Rb and Ba) and presented pronounced negative anomalies in the high-field-strength elements (e.g., Nb, Ta, Zr, and Hf). Both diabase and lamprophyre in the Mokou area were enriched in light rare earth elements (11.9 < (La/Yb)N < 30.8) with no obvious Eu anomalies (δEu = 0.92–1.03). They had high initial 87Sr/86Sr ratios (0.70625–0.71433), negative ε Nd (t) values (−12.9 to −8.3), and slightly variable initial ratios of 206Pb/204Pb (17.539–18.185), 207Pb/204Pb (15.518–15.693), and 208Pb/204Pb (38.090–38.996). Our results indicate that the Mokou dikes originated from an enriched lithospheric mantle and a contaminated asthenosphere. Continental crust materials in the magmas/fluid reservoirs were involved during the rapid intrusion of the Mokou mafic magma, as opposed to the assimilation of wall rocks in the ascent conduit. We conclude that the Mokou dikes are products of lithosphere delamination, which occurred ca. 132 Ma in the NQOB, thus suggesting that lithospheric thinning of the NCC also affected the NQOB. Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Liang, Tao [verfasserIn] Li, Long-Ming [verfasserIn] Lu, Ren [verfasserIn] Xiao, Wen-Jiao [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2019

Schlagwörter:	Mokou mafic dikes Zircon age spectrum Sr-Nd-Pb isotopes Lithosphere delamination Northern Qinling Orogenic Belt

Übergeordnetes Werk:	Enthalten in: Journal of Asian earth sciences - Amsterdam [u.a.] : Elsevier Science, 1997, 194
Übergeordnetes Werk:	volume:194

DOI / URN:	10.1016/j.jseaes.2019.104142

Katalog-ID:	ELV004212207

Internformat


LEADER	01000caa a22002652 4500
001	ELV004212207
003	DE-627
005	20230524160747.0
007	cr uuu---uuuuu
008	230502s2019 xx \|\|\|\|\|o 00\| \|\|eng c
024	7		\|a 10.1016/j.jseaes.2019.104142 \|2 doi
035			\|a (DE-627)ELV004212207
035			\|a (ELSEVIER)S1367-9120(19)30494-8
040			\|a DE-627 \|b ger \|c DE-627 \|e rda
041			\|a eng
082	0	4	\|a 550 \|q DE-600
084			\|a 38.00 \|2 bkl
100	1		\|a Liang, Tao \|e verfasserin \|4 aut
245	1	0	\|a Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination
264		1	\|c 2019
336			\|a nicht spezifiziert \|b zzz \|2 rdacontent
337			\|a Computermedien \|b c \|2 rdamedia
338			\|a Online-Ressource \|b cr \|2 rdacarrier
520			\|a Mafic dikes preserve a considerable amount of geological information about crustal evolution. Yanshanian granitoids and granitites are widespread in the southern margin of the North China Craton (NCC) and northern Qinling Orogenic Belt (NQOB), respectively. However, further study is required to resolve the many contrasting hypotheses relating to the mechanisms of petrogenesis and origins. The present study therefore reports on geochemical, geochronological, and Sr-Nd-Pb isotopic data for a suite of mafic dikes in the Mokou area of the NQOB, central China. The Mokou dikes are composed of diabase and lamprophyre intruded into the Kuanping Group (Pt3). The zircon U-Pb ages of two diabases and one lamprophyre were 132 ± 3 Ma and 132 ± 1 Ma, and 132 ± 1 Ma, respectively. The ages of a total of 126 zircon grains from three rock samples were assigned to nine age groups: ~2.2 Ga, ~946 Ma, ~519 Ma, ~440 Ma, ~413 Ma, ~385 Ma, ~160 Ma, ~145 Ma, and ~132 Ma. This complex zircon age spectrum corresponds to regional magmatic or metamorphic events from the Paleoproterozoic to the Early Cretaceous. We determined that the Mokou dikes are dominantly alkaline rocks that belong to the shoshonite and high-K calc-alkaline series. The Mokou dike samples were enriched in large ion lithophile elements (e.g., Rb and Ba) and presented pronounced negative anomalies in the high-field-strength elements (e.g., Nb, Ta, Zr, and Hf). Both diabase and lamprophyre in the Mokou area were enriched in light rare earth elements (11.9 < (La/Yb)N < 30.8) with no obvious Eu anomalies (δEu = 0.92–1.03). They had high initial 87Sr/86Sr ratios (0.70625–0.71433), negative ε Nd (t) values (−12.9 to −8.3), and slightly variable initial ratios of 206Pb/204Pb (17.539–18.185), 207Pb/204Pb (15.518–15.693), and 208Pb/204Pb (38.090–38.996). Our results indicate that the Mokou dikes originated from an enriched lithospheric mantle and a contaminated asthenosphere. Continental crust materials in the magmas/fluid reservoirs were involved during the rapid intrusion of the Mokou mafic magma, as opposed to the assimilation of wall rocks in the ascent conduit. We conclude that the Mokou dikes are products of lithosphere delamination, which occurred ca. 132 Ma in the NQOB, thus suggesting that lithospheric thinning of the NCC also affected the NQOB.
650		4	\|a Mokou mafic dikes
650		4	\|a Zircon age spectrum
650		4	\|a Sr-Nd-Pb isotopes
650		4	\|a Lithosphere delamination
650		4	\|a Northern Qinling Orogenic Belt
700	1		\|a Li, Long-Ming \|e verfasserin \|4 aut
700	1		\|a Lu, Ren \|e verfasserin \|4 aut
700	1		\|a Xiao, Wen-Jiao \|e verfasserin \|4 aut
773	0	8	\|i Enthalten in \|t Journal of Asian earth sciences \|d Amsterdam [u.a.] : Elsevier Science, 1997 \|g 194 \|h Online-Ressource \|w (DE-627)303391960 \|w (DE-600)1494743-2 \|w (DE-576)106846035 \|x 1878-5786 \|7 nnns
773	1	8	\|g volume:194
912			\|a GBV_USEFLAG_U
912			\|a SYSFLAG_U
912			\|a GBV_ELV
912			\|a SSG-OPC-GGO
912			\|a GBV_ILN_20
912			\|a GBV_ILN_22
912			\|a GBV_ILN_23
912			\|a GBV_ILN_24
912			\|a GBV_ILN_31
912			\|a GBV_ILN_32
912			\|a GBV_ILN_40
912			\|a GBV_ILN_60
912			\|a GBV_ILN_62
912			\|a GBV_ILN_63
912			\|a GBV_ILN_65
912			\|a GBV_ILN_69
912			\|a GBV_ILN_70
912			\|a GBV_ILN_73
912			\|a GBV_ILN_74
912			\|a GBV_ILN_90
912			\|a GBV_ILN_95
912			\|a GBV_ILN_100
912			\|a GBV_ILN_105
912			\|a GBV_ILN_110
912			\|a GBV_ILN_150
912			\|a GBV_ILN_151
912			\|a GBV_ILN_224
912			\|a GBV_ILN_370
912			\|a GBV_ILN_602
912			\|a GBV_ILN_702
912			\|a GBV_ILN_2003
912			\|a GBV_ILN_2004
912			\|a GBV_ILN_2005
912			\|a GBV_ILN_2011
912			\|a GBV_ILN_2014
912			\|a GBV_ILN_2015
912			\|a GBV_ILN_2020
912			\|a GBV_ILN_2021
912			\|a GBV_ILN_2025
912			\|a GBV_ILN_2027
912			\|a GBV_ILN_2034
912			\|a GBV_ILN_2038
912			\|a GBV_ILN_2044
912			\|a GBV_ILN_2048
912			\|a GBV_ILN_2049
912			\|a GBV_ILN_2050
912			\|a GBV_ILN_2056
912			\|a GBV_ILN_2059
912			\|a GBV_ILN_2061
912			\|a GBV_ILN_2064
912			\|a GBV_ILN_2065
912			\|a GBV_ILN_2068
912			\|a GBV_ILN_2111
912			\|a GBV_ILN_2112
912			\|a GBV_ILN_2113
912			\|a GBV_ILN_2118
912			\|a GBV_ILN_2122
912			\|a GBV_ILN_2129
912			\|a GBV_ILN_2143
912			\|a GBV_ILN_2147
912			\|a GBV_ILN_2148
912			\|a GBV_ILN_2152
912			\|a GBV_ILN_2153
912			\|a GBV_ILN_2190
912			\|a GBV_ILN_2336
912			\|a GBV_ILN_2507
912			\|a GBV_ILN_2522
912			\|a GBV_ILN_4035
912			\|a GBV_ILN_4037
912			\|a GBV_ILN_4112
912			\|a GBV_ILN_4125
912			\|a GBV_ILN_4126
912			\|a GBV_ILN_4242
912			\|a GBV_ILN_4251
912			\|a GBV_ILN_4305
912			\|a GBV_ILN_4313
912			\|a GBV_ILN_4323
912			\|a GBV_ILN_4324
912			\|a GBV_ILN_4325
912			\|a GBV_ILN_4326
912			\|a GBV_ILN_4333
912			\|a GBV_ILN_4334
912			\|a GBV_ILN_4335
912			\|a GBV_ILN_4338
912			\|a GBV_ILN_4393
936	b	k	\|a 38.00 \|j Geowissenschaften: Allgemeines
951			\|a AR
952			\|d 194

Indexfelder

author_variant	t l tl l m l lml r l rl w j x wjx
matchkey_str	article:18785786:2019----::alceaeumfcieiteotenilnooeiblcnrlhnipiai
hierarchy_sort_str	2019
bklnumber	38.00
publishDate	2019
allfields	10.1016/j.jseaes.2019.104142 doi (DE-627)ELV004212207 (ELSEVIER)S1367-9120(19)30494-8 DE-627 ger DE-627 rda eng 550 DE-600 38.00 bkl Liang, Tao verfasserin aut Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Mafic dikes preserve a considerable amount of geological information about crustal evolution. Yanshanian granitoids and granitites are widespread in the southern margin of the North China Craton (NCC) and northern Qinling Orogenic Belt (NQOB), respectively. However, further study is required to resolve the many contrasting hypotheses relating to the mechanisms of petrogenesis and origins. The present study therefore reports on geochemical, geochronological, and Sr-Nd-Pb isotopic data for a suite of mafic dikes in the Mokou area of the NQOB, central China. The Mokou dikes are composed of diabase and lamprophyre intruded into the Kuanping Group (Pt3). The zircon U-Pb ages of two diabases and one lamprophyre were 132 ± 3 Ma and 132 ± 1 Ma, and 132 ± 1 Ma, respectively. The ages of a total of 126 zircon grains from three rock samples were assigned to nine age groups: ~2.2 Ga, ~946 Ma, ~519 Ma, ~440 Ma, ~413 Ma, ~385 Ma, ~160 Ma, ~145 Ma, and ~132 Ma. This complex zircon age spectrum corresponds to regional magmatic or metamorphic events from the Paleoproterozoic to the Early Cretaceous. We determined that the Mokou dikes are dominantly alkaline rocks that belong to the shoshonite and high-K calc-alkaline series. The Mokou dike samples were enriched in large ion lithophile elements (e.g., Rb and Ba) and presented pronounced negative anomalies in the high-field-strength elements (e.g., Nb, Ta, Zr, and Hf). Both diabase and lamprophyre in the Mokou area were enriched in light rare earth elements (11.9 < (La/Yb)N < 30.8) with no obvious Eu anomalies (δEu = 0.92–1.03). They had high initial 87Sr/86Sr ratios (0.70625–0.71433), negative ε Nd (t) values (−12.9 to −8.3), and slightly variable initial ratios of 206Pb/204Pb (17.539–18.185), 207Pb/204Pb (15.518–15.693), and 208Pb/204Pb (38.090–38.996). Our results indicate that the Mokou dikes originated from an enriched lithospheric mantle and a contaminated asthenosphere. Continental crust materials in the magmas/fluid reservoirs were involved during the rapid intrusion of the Mokou mafic magma, as opposed to the assimilation of wall rocks in the ascent conduit. We conclude that the Mokou dikes are products of lithosphere delamination, which occurred ca. 132 Ma in the NQOB, thus suggesting that lithospheric thinning of the NCC also affected the NQOB. Mokou mafic dikes Zircon age spectrum Sr-Nd-Pb isotopes Lithosphere delamination Northern Qinling Orogenic Belt Li, Long-Ming verfasserin aut Lu, Ren verfasserin aut Xiao, Wen-Jiao verfasserin aut Enthalten in Journal of Asian earth sciences Amsterdam [u.a.] : Elsevier Science, 1997 194 Online-Ressource (DE-627)303391960 (DE-600)1494743-2 (DE-576)106846035 1878-5786 nnns volume:194 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.00 Geowissenschaften: Allgemeines AR 194
spelling	10.1016/j.jseaes.2019.104142 doi (DE-627)ELV004212207 (ELSEVIER)S1367-9120(19)30494-8 DE-627 ger DE-627 rda eng 550 DE-600 38.00 bkl Liang, Tao verfasserin aut Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Mafic dikes preserve a considerable amount of geological information about crustal evolution. Yanshanian granitoids and granitites are widespread in the southern margin of the North China Craton (NCC) and northern Qinling Orogenic Belt (NQOB), respectively. However, further study is required to resolve the many contrasting hypotheses relating to the mechanisms of petrogenesis and origins. The present study therefore reports on geochemical, geochronological, and Sr-Nd-Pb isotopic data for a suite of mafic dikes in the Mokou area of the NQOB, central China. The Mokou dikes are composed of diabase and lamprophyre intruded into the Kuanping Group (Pt3). The zircon U-Pb ages of two diabases and one lamprophyre were 132 ± 3 Ma and 132 ± 1 Ma, and 132 ± 1 Ma, respectively. The ages of a total of 126 zircon grains from three rock samples were assigned to nine age groups: ~2.2 Ga, ~946 Ma, ~519 Ma, ~440 Ma, ~413 Ma, ~385 Ma, ~160 Ma, ~145 Ma, and ~132 Ma. This complex zircon age spectrum corresponds to regional magmatic or metamorphic events from the Paleoproterozoic to the Early Cretaceous. We determined that the Mokou dikes are dominantly alkaline rocks that belong to the shoshonite and high-K calc-alkaline series. The Mokou dike samples were enriched in large ion lithophile elements (e.g., Rb and Ba) and presented pronounced negative anomalies in the high-field-strength elements (e.g., Nb, Ta, Zr, and Hf). Both diabase and lamprophyre in the Mokou area were enriched in light rare earth elements (11.9 < (La/Yb)N < 30.8) with no obvious Eu anomalies (δEu = 0.92–1.03). They had high initial 87Sr/86Sr ratios (0.70625–0.71433), negative ε Nd (t) values (−12.9 to −8.3), and slightly variable initial ratios of 206Pb/204Pb (17.539–18.185), 207Pb/204Pb (15.518–15.693), and 208Pb/204Pb (38.090–38.996). Our results indicate that the Mokou dikes originated from an enriched lithospheric mantle and a contaminated asthenosphere. Continental crust materials in the magmas/fluid reservoirs were involved during the rapid intrusion of the Mokou mafic magma, as opposed to the assimilation of wall rocks in the ascent conduit. We conclude that the Mokou dikes are products of lithosphere delamination, which occurred ca. 132 Ma in the NQOB, thus suggesting that lithospheric thinning of the NCC also affected the NQOB. Mokou mafic dikes Zircon age spectrum Sr-Nd-Pb isotopes Lithosphere delamination Northern Qinling Orogenic Belt Li, Long-Ming verfasserin aut Lu, Ren verfasserin aut Xiao, Wen-Jiao verfasserin aut Enthalten in Journal of Asian earth sciences Amsterdam [u.a.] : Elsevier Science, 1997 194 Online-Ressource (DE-627)303391960 (DE-600)1494743-2 (DE-576)106846035 1878-5786 nnns volume:194 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.00 Geowissenschaften: Allgemeines AR 194
allfields_unstemmed	10.1016/j.jseaes.2019.104142 doi (DE-627)ELV004212207 (ELSEVIER)S1367-9120(19)30494-8 DE-627 ger DE-627 rda eng 550 DE-600 38.00 bkl Liang, Tao verfasserin aut Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Mafic dikes preserve a considerable amount of geological information about crustal evolution. Yanshanian granitoids and granitites are widespread in the southern margin of the North China Craton (NCC) and northern Qinling Orogenic Belt (NQOB), respectively. However, further study is required to resolve the many contrasting hypotheses relating to the mechanisms of petrogenesis and origins. The present study therefore reports on geochemical, geochronological, and Sr-Nd-Pb isotopic data for a suite of mafic dikes in the Mokou area of the NQOB, central China. The Mokou dikes are composed of diabase and lamprophyre intruded into the Kuanping Group (Pt3). The zircon U-Pb ages of two diabases and one lamprophyre were 132 ± 3 Ma and 132 ± 1 Ma, and 132 ± 1 Ma, respectively. The ages of a total of 126 zircon grains from three rock samples were assigned to nine age groups: ~2.2 Ga, ~946 Ma, ~519 Ma, ~440 Ma, ~413 Ma, ~385 Ma, ~160 Ma, ~145 Ma, and ~132 Ma. This complex zircon age spectrum corresponds to regional magmatic or metamorphic events from the Paleoproterozoic to the Early Cretaceous. We determined that the Mokou dikes are dominantly alkaline rocks that belong to the shoshonite and high-K calc-alkaline series. The Mokou dike samples were enriched in large ion lithophile elements (e.g., Rb and Ba) and presented pronounced negative anomalies in the high-field-strength elements (e.g., Nb, Ta, Zr, and Hf). Both diabase and lamprophyre in the Mokou area were enriched in light rare earth elements (11.9 < (La/Yb)N < 30.8) with no obvious Eu anomalies (δEu = 0.92–1.03). They had high initial 87Sr/86Sr ratios (0.70625–0.71433), negative ε Nd (t) values (−12.9 to −8.3), and slightly variable initial ratios of 206Pb/204Pb (17.539–18.185), 207Pb/204Pb (15.518–15.693), and 208Pb/204Pb (38.090–38.996). Our results indicate that the Mokou dikes originated from an enriched lithospheric mantle and a contaminated asthenosphere. Continental crust materials in the magmas/fluid reservoirs were involved during the rapid intrusion of the Mokou mafic magma, as opposed to the assimilation of wall rocks in the ascent conduit. We conclude that the Mokou dikes are products of lithosphere delamination, which occurred ca. 132 Ma in the NQOB, thus suggesting that lithospheric thinning of the NCC also affected the NQOB. Mokou mafic dikes Zircon age spectrum Sr-Nd-Pb isotopes Lithosphere delamination Northern Qinling Orogenic Belt Li, Long-Ming verfasserin aut Lu, Ren verfasserin aut Xiao, Wen-Jiao verfasserin aut Enthalten in Journal of Asian earth sciences Amsterdam [u.a.] : Elsevier Science, 1997 194 Online-Ressource (DE-627)303391960 (DE-600)1494743-2 (DE-576)106846035 1878-5786 nnns volume:194 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.00 Geowissenschaften: Allgemeines AR 194
allfieldsGer	10.1016/j.jseaes.2019.104142 doi (DE-627)ELV004212207 (ELSEVIER)S1367-9120(19)30494-8 DE-627 ger DE-627 rda eng 550 DE-600 38.00 bkl Liang, Tao verfasserin aut Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Mafic dikes preserve a considerable amount of geological information about crustal evolution. Yanshanian granitoids and granitites are widespread in the southern margin of the North China Craton (NCC) and northern Qinling Orogenic Belt (NQOB), respectively. However, further study is required to resolve the many contrasting hypotheses relating to the mechanisms of petrogenesis and origins. The present study therefore reports on geochemical, geochronological, and Sr-Nd-Pb isotopic data for a suite of mafic dikes in the Mokou area of the NQOB, central China. The Mokou dikes are composed of diabase and lamprophyre intruded into the Kuanping Group (Pt3). The zircon U-Pb ages of two diabases and one lamprophyre were 132 ± 3 Ma and 132 ± 1 Ma, and 132 ± 1 Ma, respectively. The ages of a total of 126 zircon grains from three rock samples were assigned to nine age groups: ~2.2 Ga, ~946 Ma, ~519 Ma, ~440 Ma, ~413 Ma, ~385 Ma, ~160 Ma, ~145 Ma, and ~132 Ma. This complex zircon age spectrum corresponds to regional magmatic or metamorphic events from the Paleoproterozoic to the Early Cretaceous. We determined that the Mokou dikes are dominantly alkaline rocks that belong to the shoshonite and high-K calc-alkaline series. The Mokou dike samples were enriched in large ion lithophile elements (e.g., Rb and Ba) and presented pronounced negative anomalies in the high-field-strength elements (e.g., Nb, Ta, Zr, and Hf). Both diabase and lamprophyre in the Mokou area were enriched in light rare earth elements (11.9 < (La/Yb)N < 30.8) with no obvious Eu anomalies (δEu = 0.92–1.03). They had high initial 87Sr/86Sr ratios (0.70625–0.71433), negative ε Nd (t) values (−12.9 to −8.3), and slightly variable initial ratios of 206Pb/204Pb (17.539–18.185), 207Pb/204Pb (15.518–15.693), and 208Pb/204Pb (38.090–38.996). Our results indicate that the Mokou dikes originated from an enriched lithospheric mantle and a contaminated asthenosphere. Continental crust materials in the magmas/fluid reservoirs were involved during the rapid intrusion of the Mokou mafic magma, as opposed to the assimilation of wall rocks in the ascent conduit. We conclude that the Mokou dikes are products of lithosphere delamination, which occurred ca. 132 Ma in the NQOB, thus suggesting that lithospheric thinning of the NCC also affected the NQOB. Mokou mafic dikes Zircon age spectrum Sr-Nd-Pb isotopes Lithosphere delamination Northern Qinling Orogenic Belt Li, Long-Ming verfasserin aut Lu, Ren verfasserin aut Xiao, Wen-Jiao verfasserin aut Enthalten in Journal of Asian earth sciences Amsterdam [u.a.] : Elsevier Science, 1997 194 Online-Ressource (DE-627)303391960 (DE-600)1494743-2 (DE-576)106846035 1878-5786 nnns volume:194 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.00 Geowissenschaften: Allgemeines AR 194
allfieldsSound	10.1016/j.jseaes.2019.104142 doi (DE-627)ELV004212207 (ELSEVIER)S1367-9120(19)30494-8 DE-627 ger DE-627 rda eng 550 DE-600 38.00 bkl Liang, Tao verfasserin aut Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Mafic dikes preserve a considerable amount of geological information about crustal evolution. Yanshanian granitoids and granitites are widespread in the southern margin of the North China Craton (NCC) and northern Qinling Orogenic Belt (NQOB), respectively. However, further study is required to resolve the many contrasting hypotheses relating to the mechanisms of petrogenesis and origins. The present study therefore reports on geochemical, geochronological, and Sr-Nd-Pb isotopic data for a suite of mafic dikes in the Mokou area of the NQOB, central China. The Mokou dikes are composed of diabase and lamprophyre intruded into the Kuanping Group (Pt3). The zircon U-Pb ages of two diabases and one lamprophyre were 132 ± 3 Ma and 132 ± 1 Ma, and 132 ± 1 Ma, respectively. The ages of a total of 126 zircon grains from three rock samples were assigned to nine age groups: ~2.2 Ga, ~946 Ma, ~519 Ma, ~440 Ma, ~413 Ma, ~385 Ma, ~160 Ma, ~145 Ma, and ~132 Ma. This complex zircon age spectrum corresponds to regional magmatic or metamorphic events from the Paleoproterozoic to the Early Cretaceous. We determined that the Mokou dikes are dominantly alkaline rocks that belong to the shoshonite and high-K calc-alkaline series. The Mokou dike samples were enriched in large ion lithophile elements (e.g., Rb and Ba) and presented pronounced negative anomalies in the high-field-strength elements (e.g., Nb, Ta, Zr, and Hf). Both diabase and lamprophyre in the Mokou area were enriched in light rare earth elements (11.9 < (La/Yb)N < 30.8) with no obvious Eu anomalies (δEu = 0.92–1.03). They had high initial 87Sr/86Sr ratios (0.70625–0.71433), negative ε Nd (t) values (−12.9 to −8.3), and slightly variable initial ratios of 206Pb/204Pb (17.539–18.185), 207Pb/204Pb (15.518–15.693), and 208Pb/204Pb (38.090–38.996). Our results indicate that the Mokou dikes originated from an enriched lithospheric mantle and a contaminated asthenosphere. Continental crust materials in the magmas/fluid reservoirs were involved during the rapid intrusion of the Mokou mafic magma, as opposed to the assimilation of wall rocks in the ascent conduit. We conclude that the Mokou dikes are products of lithosphere delamination, which occurred ca. 132 Ma in the NQOB, thus suggesting that lithospheric thinning of the NCC also affected the NQOB. Mokou mafic dikes Zircon age spectrum Sr-Nd-Pb isotopes Lithosphere delamination Northern Qinling Orogenic Belt Li, Long-Ming verfasserin aut Lu, Ren verfasserin aut Xiao, Wen-Jiao verfasserin aut Enthalten in Journal of Asian earth sciences Amsterdam [u.a.] : Elsevier Science, 1997 194 Online-Ressource (DE-627)303391960 (DE-600)1494743-2 (DE-576)106846035 1878-5786 nnns volume:194 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.00 Geowissenschaften: Allgemeines AR 194
language	English
source	Enthalten in Journal of Asian earth sciences 194 volume:194
sourceStr	Enthalten in Journal of Asian earth sciences 194 volume:194
format_phy_str_mv	Article
bklname	Geowissenschaften: Allgemeines
institution	findex.gbv.de
topic_facet	Mokou mafic dikes Zircon age spectrum Sr-Nd-Pb isotopes Lithosphere delamination Northern Qinling Orogenic Belt
dewey-raw	550
isfreeaccess_bool	false
container_title	Journal of Asian earth sciences
authorswithroles_txt_mv	Liang, Tao @@aut@@ Li, Long-Ming @@aut@@ Lu, Ren @@aut@@ Xiao, Wen-Jiao @@aut@@
publishDateDaySort_date	2019-01-01T00:00:00Z
hierarchy_top_id	303391960
dewey-sort	3550
id	ELV004212207
language_de	englisch
fullrecord	<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">ELV004212207</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230524160747.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">230502s2019 xx \|\|\|\|\|o 00\| \|\|eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1016/j.jseaes.2019.104142</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)ELV004212207</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(ELSEVIER)S1367-9120(19)30494-8</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rda</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">550</subfield><subfield code="q">DE-600</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">38.00</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Liang, Tao</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2019</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Mafic dikes preserve a considerable amount of geological information about crustal evolution. Yanshanian granitoids and granitites are widespread in the southern margin of the North China Craton (NCC) and northern Qinling Orogenic Belt (NQOB), respectively. However, further study is required to resolve the many contrasting hypotheses relating to the mechanisms of petrogenesis and origins. The present study therefore reports on geochemical, geochronological, and Sr-Nd-Pb isotopic data for a suite of mafic dikes in the Mokou area of the NQOB, central China. The Mokou dikes are composed of diabase and lamprophyre intruded into the Kuanping Group (Pt3). The zircon U-Pb ages of two diabases and one lamprophyre were 132 ± 3 Ma and 132 ± 1 Ma, and 132 ± 1 Ma, respectively. The ages of a total of 126 zircon grains from three rock samples were assigned to nine age groups: ~2.2 Ga, ~946 Ma, ~519 Ma, ~440 Ma, ~413 Ma, ~385 Ma, ~160 Ma, ~145 Ma, and ~132 Ma. This complex zircon age spectrum corresponds to regional magmatic or metamorphic events from the Paleoproterozoic to the Early Cretaceous. We determined that the Mokou dikes are dominantly alkaline rocks that belong to the shoshonite and high-K calc-alkaline series. The Mokou dike samples were enriched in large ion lithophile elements (e.g., Rb and Ba) and presented pronounced negative anomalies in the high-field-strength elements (e.g., Nb, Ta, Zr, and Hf). Both diabase and lamprophyre in the Mokou area were enriched in light rare earth elements (11.9 < (La/Yb)N < 30.8) with no obvious Eu anomalies (δEu = 0.92–1.03). They had high initial 87Sr/86Sr ratios (0.70625–0.71433), negative ε Nd (t) values (−12.9 to −8.3), and slightly variable initial ratios of 206Pb/204Pb (17.539–18.185), 207Pb/204Pb (15.518–15.693), and 208Pb/204Pb (38.090–38.996). Our results indicate that the Mokou dikes originated from an enriched lithospheric mantle and a contaminated asthenosphere. Continental crust materials in the magmas/fluid reservoirs were involved during the rapid intrusion of the Mokou mafic magma, as opposed to the assimilation of wall rocks in the ascent conduit. We conclude that the Mokou dikes are products of lithosphere delamination, which occurred ca. 132 Ma in the NQOB, thus suggesting that lithospheric thinning of the NCC also affected the NQOB.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Mokou mafic dikes</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Zircon age spectrum</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Sr-Nd-Pb isotopes</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Lithosphere delamination</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Northern Qinling Orogenic Belt</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Li, Long-Ming</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Lu, Ren</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Xiao, Wen-Jiao</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Journal of Asian earth sciences</subfield><subfield code="d">Amsterdam [u.a.] : Elsevier Science, 1997</subfield><subfield code="g">194</subfield><subfield code="h">Online-Ressource</subfield><subfield code="w">(DE-627)303391960</subfield><subfield code="w">(DE-600)1494743-2</subfield><subfield code="w">(DE-576)106846035</subfield><subfield code="x">1878-5786</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:194</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ELV</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OPC-GGO</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_20</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_22</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_23</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_24</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_31</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_32</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_40</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_60</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_62</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_63</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_65</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_69</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_70</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_73</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_74</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_90</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_95</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_100</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_105</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_110</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_150</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_151</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_224</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_370</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_602</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_702</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2003</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2004</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2005</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2011</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2014</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2015</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2020</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2021</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2025</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2027</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2034</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2038</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2044</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2048</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2049</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2050</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2056</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2059</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2061</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2064</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2065</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2068</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2111</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2112</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2113</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2118</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2122</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2129</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2143</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2147</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2148</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2152</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2153</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2190</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2336</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2507</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2522</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4035</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4037</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4112</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4125</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4126</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4242</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4251</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4305</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4313</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4323</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4324</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4325</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4326</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4333</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4334</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4335</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4338</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4393</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">38.00</subfield><subfield code="j">Geowissenschaften: Allgemeines</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">194</subfield></datafield></record></collection>
author	Liang, Tao
spellingShingle	Liang, Tao ddc 550 bkl 38.00 misc Mokou mafic dikes misc Zircon age spectrum misc Sr-Nd-Pb isotopes misc Lithosphere delamination misc Northern Qinling Orogenic Belt Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination
authorStr	Liang, Tao
ppnlink_with_tag_str_mv	@@773@@(DE-627)303391960
format	electronic Article
dewey-ones	550 - Earth sciences
delete_txt_mv	keep
author_role	aut aut aut aut
collection	elsevier
remote_str	true
illustrated	Not Illustrated
issn	1878-5786
topic_title	550 DE-600 38.00 bkl Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination Mokou mafic dikes Zircon age spectrum Sr-Nd-Pb isotopes Lithosphere delamination Northern Qinling Orogenic Belt
topic	ddc 550 bkl 38.00 misc Mokou mafic dikes misc Zircon age spectrum misc Sr-Nd-Pb isotopes misc Lithosphere delamination misc Northern Qinling Orogenic Belt
topic_unstemmed	ddc 550 bkl 38.00 misc Mokou mafic dikes misc Zircon age spectrum misc Sr-Nd-Pb isotopes misc Lithosphere delamination misc Northern Qinling Orogenic Belt
topic_browse	ddc 550 bkl 38.00 misc Mokou mafic dikes misc Zircon age spectrum misc Sr-Nd-Pb isotopes misc Lithosphere delamination misc Northern Qinling Orogenic Belt
format_facet	Elektronische Aufsätze Aufsätze Elektronische Ressource
format_main_str_mv	Text Zeitschrift/Artikel
carriertype_str_mv	cr
hierarchy_parent_title	Journal of Asian earth sciences
hierarchy_parent_id	303391960
dewey-tens	550 - Earth sciences & geology
hierarchy_top_title	Journal of Asian earth sciences
isfreeaccess_txt	false
familylinks_str_mv	(DE-627)303391960 (DE-600)1494743-2 (DE-576)106846035
title	Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination
ctrlnum	(DE-627)ELV004212207 (ELSEVIER)S1367-9120(19)30494-8
title_full	Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination
author_sort	Liang, Tao
journal	Journal of Asian earth sciences
journalStr	Journal of Asian earth sciences
lang_code	eng
isOA_bool	false
dewey-hundreds	500 - Science
recordtype	marc
publishDateSort	2019
contenttype_str_mv	zzz
author_browse	Liang, Tao Li, Long-Ming Lu, Ren Xiao, Wen-Jiao
container_volume	194
class	550 DE-600 38.00 bkl
format_se	Elektronische Aufsätze
author-letter	Liang, Tao
doi_str_mv	10.1016/j.jseaes.2019.104142
dewey-full	550
author2-role	verfasserin
title_sort	early cretaceous mafic dikes in the northern qinling orogenic belt, central china: implications for lithosphere delamination
title_auth	Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination
abstract	Mafic dikes preserve a considerable amount of geological information about crustal evolution. Yanshanian granitoids and granitites are widespread in the southern margin of the North China Craton (NCC) and northern Qinling Orogenic Belt (NQOB), respectively. However, further study is required to resolve the many contrasting hypotheses relating to the mechanisms of petrogenesis and origins. The present study therefore reports on geochemical, geochronological, and Sr-Nd-Pb isotopic data for a suite of mafic dikes in the Mokou area of the NQOB, central China. The Mokou dikes are composed of diabase and lamprophyre intruded into the Kuanping Group (Pt3). The zircon U-Pb ages of two diabases and one lamprophyre were 132 ± 3 Ma and 132 ± 1 Ma, and 132 ± 1 Ma, respectively. The ages of a total of 126 zircon grains from three rock samples were assigned to nine age groups: ~2.2 Ga, ~946 Ma, ~519 Ma, ~440 Ma, ~413 Ma, ~385 Ma, ~160 Ma, ~145 Ma, and ~132 Ma. This complex zircon age spectrum corresponds to regional magmatic or metamorphic events from the Paleoproterozoic to the Early Cretaceous. We determined that the Mokou dikes are dominantly alkaline rocks that belong to the shoshonite and high-K calc-alkaline series. The Mokou dike samples were enriched in large ion lithophile elements (e.g., Rb and Ba) and presented pronounced negative anomalies in the high-field-strength elements (e.g., Nb, Ta, Zr, and Hf). Both diabase and lamprophyre in the Mokou area were enriched in light rare earth elements (11.9 < (La/Yb)N < 30.8) with no obvious Eu anomalies (δEu = 0.92–1.03). They had high initial 87Sr/86Sr ratios (0.70625–0.71433), negative ε Nd (t) values (−12.9 to −8.3), and slightly variable initial ratios of 206Pb/204Pb (17.539–18.185), 207Pb/204Pb (15.518–15.693), and 208Pb/204Pb (38.090–38.996). Our results indicate that the Mokou dikes originated from an enriched lithospheric mantle and a contaminated asthenosphere. Continental crust materials in the magmas/fluid reservoirs were involved during the rapid intrusion of the Mokou mafic magma, as opposed to the assimilation of wall rocks in the ascent conduit. We conclude that the Mokou dikes are products of lithosphere delamination, which occurred ca. 132 Ma in the NQOB, thus suggesting that lithospheric thinning of the NCC also affected the NQOB.
abstractGer	Mafic dikes preserve a considerable amount of geological information about crustal evolution. Yanshanian granitoids and granitites are widespread in the southern margin of the North China Craton (NCC) and northern Qinling Orogenic Belt (NQOB), respectively. However, further study is required to resolve the many contrasting hypotheses relating to the mechanisms of petrogenesis and origins. The present study therefore reports on geochemical, geochronological, and Sr-Nd-Pb isotopic data for a suite of mafic dikes in the Mokou area of the NQOB, central China. The Mokou dikes are composed of diabase and lamprophyre intruded into the Kuanping Group (Pt3). The zircon U-Pb ages of two diabases and one lamprophyre were 132 ± 3 Ma and 132 ± 1 Ma, and 132 ± 1 Ma, respectively. The ages of a total of 126 zircon grains from three rock samples were assigned to nine age groups: ~2.2 Ga, ~946 Ma, ~519 Ma, ~440 Ma, ~413 Ma, ~385 Ma, ~160 Ma, ~145 Ma, and ~132 Ma. This complex zircon age spectrum corresponds to regional magmatic or metamorphic events from the Paleoproterozoic to the Early Cretaceous. We determined that the Mokou dikes are dominantly alkaline rocks that belong to the shoshonite and high-K calc-alkaline series. The Mokou dike samples were enriched in large ion lithophile elements (e.g., Rb and Ba) and presented pronounced negative anomalies in the high-field-strength elements (e.g., Nb, Ta, Zr, and Hf). Both diabase and lamprophyre in the Mokou area were enriched in light rare earth elements (11.9 < (La/Yb)N < 30.8) with no obvious Eu anomalies (δEu = 0.92–1.03). They had high initial 87Sr/86Sr ratios (0.70625–0.71433), negative ε Nd (t) values (−12.9 to −8.3), and slightly variable initial ratios of 206Pb/204Pb (17.539–18.185), 207Pb/204Pb (15.518–15.693), and 208Pb/204Pb (38.090–38.996). Our results indicate that the Mokou dikes originated from an enriched lithospheric mantle and a contaminated asthenosphere. Continental crust materials in the magmas/fluid reservoirs were involved during the rapid intrusion of the Mokou mafic magma, as opposed to the assimilation of wall rocks in the ascent conduit. We conclude that the Mokou dikes are products of lithosphere delamination, which occurred ca. 132 Ma in the NQOB, thus suggesting that lithospheric thinning of the NCC also affected the NQOB.
abstract_unstemmed	Mafic dikes preserve a considerable amount of geological information about crustal evolution. Yanshanian granitoids and granitites are widespread in the southern margin of the North China Craton (NCC) and northern Qinling Orogenic Belt (NQOB), respectively. However, further study is required to resolve the many contrasting hypotheses relating to the mechanisms of petrogenesis and origins. The present study therefore reports on geochemical, geochronological, and Sr-Nd-Pb isotopic data for a suite of mafic dikes in the Mokou area of the NQOB, central China. The Mokou dikes are composed of diabase and lamprophyre intruded into the Kuanping Group (Pt3). The zircon U-Pb ages of two diabases and one lamprophyre were 132 ± 3 Ma and 132 ± 1 Ma, and 132 ± 1 Ma, respectively. The ages of a total of 126 zircon grains from three rock samples were assigned to nine age groups: ~2.2 Ga, ~946 Ma, ~519 Ma, ~440 Ma, ~413 Ma, ~385 Ma, ~160 Ma, ~145 Ma, and ~132 Ma. This complex zircon age spectrum corresponds to regional magmatic or metamorphic events from the Paleoproterozoic to the Early Cretaceous. We determined that the Mokou dikes are dominantly alkaline rocks that belong to the shoshonite and high-K calc-alkaline series. The Mokou dike samples were enriched in large ion lithophile elements (e.g., Rb and Ba) and presented pronounced negative anomalies in the high-field-strength elements (e.g., Nb, Ta, Zr, and Hf). Both diabase and lamprophyre in the Mokou area were enriched in light rare earth elements (11.9 < (La/Yb)N < 30.8) with no obvious Eu anomalies (δEu = 0.92–1.03). They had high initial 87Sr/86Sr ratios (0.70625–0.71433), negative ε Nd (t) values (−12.9 to −8.3), and slightly variable initial ratios of 206Pb/204Pb (17.539–18.185), 207Pb/204Pb (15.518–15.693), and 208Pb/204Pb (38.090–38.996). Our results indicate that the Mokou dikes originated from an enriched lithospheric mantle and a contaminated asthenosphere. Continental crust materials in the magmas/fluid reservoirs were involved during the rapid intrusion of the Mokou mafic magma, as opposed to the assimilation of wall rocks in the ascent conduit. We conclude that the Mokou dikes are products of lithosphere delamination, which occurred ca. 132 Ma in the NQOB, thus suggesting that lithospheric thinning of the NCC also affected the NQOB.
collection_details	GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393
title_short	Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination
remote_bool	true
author2	Li, Long-Ming Lu, Ren Xiao, Wen-Jiao
author2Str	Li, Long-Ming Lu, Ren Xiao, Wen-Jiao
ppnlink	303391960
mediatype_str_mv	c
isOA_txt	false
hochschulschrift_bool	false
doi_str	10.1016/j.jseaes.2019.104142
up_date	2024-07-06T22:13:46.612Z
_version_	1803869515009753088
fullrecord_marcxml	<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">ELV004212207</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230524160747.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">230502s2019 xx \|\|\|\|\|o 00\| \|\|eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1016/j.jseaes.2019.104142</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)ELV004212207</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(ELSEVIER)S1367-9120(19)30494-8</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rda</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">550</subfield><subfield code="q">DE-600</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">38.00</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Liang, Tao</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2019</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Mafic dikes preserve a considerable amount of geological information about crustal evolution. Yanshanian granitoids and granitites are widespread in the southern margin of the North China Craton (NCC) and northern Qinling Orogenic Belt (NQOB), respectively. However, further study is required to resolve the many contrasting hypotheses relating to the mechanisms of petrogenesis and origins. The present study therefore reports on geochemical, geochronological, and Sr-Nd-Pb isotopic data for a suite of mafic dikes in the Mokou area of the NQOB, central China. The Mokou dikes are composed of diabase and lamprophyre intruded into the Kuanping Group (Pt3). The zircon U-Pb ages of two diabases and one lamprophyre were 132 ± 3 Ma and 132 ± 1 Ma, and 132 ± 1 Ma, respectively. The ages of a total of 126 zircon grains from three rock samples were assigned to nine age groups: ~2.2 Ga, ~946 Ma, ~519 Ma, ~440 Ma, ~413 Ma, ~385 Ma, ~160 Ma, ~145 Ma, and ~132 Ma. This complex zircon age spectrum corresponds to regional magmatic or metamorphic events from the Paleoproterozoic to the Early Cretaceous. We determined that the Mokou dikes are dominantly alkaline rocks that belong to the shoshonite and high-K calc-alkaline series. The Mokou dike samples were enriched in large ion lithophile elements (e.g., Rb and Ba) and presented pronounced negative anomalies in the high-field-strength elements (e.g., Nb, Ta, Zr, and Hf). Both diabase and lamprophyre in the Mokou area were enriched in light rare earth elements (11.9 < (La/Yb)N < 30.8) with no obvious Eu anomalies (δEu = 0.92–1.03). They had high initial 87Sr/86Sr ratios (0.70625–0.71433), negative ε Nd (t) values (−12.9 to −8.3), and slightly variable initial ratios of 206Pb/204Pb (17.539–18.185), 207Pb/204Pb (15.518–15.693), and 208Pb/204Pb (38.090–38.996). Our results indicate that the Mokou dikes originated from an enriched lithospheric mantle and a contaminated asthenosphere. Continental crust materials in the magmas/fluid reservoirs were involved during the rapid intrusion of the Mokou mafic magma, as opposed to the assimilation of wall rocks in the ascent conduit. We conclude that the Mokou dikes are products of lithosphere delamination, which occurred ca. 132 Ma in the NQOB, thus suggesting that lithospheric thinning of the NCC also affected the NQOB.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Mokou mafic dikes</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Zircon age spectrum</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Sr-Nd-Pb isotopes</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Lithosphere delamination</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Northern Qinling Orogenic Belt</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Li, Long-Ming</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Lu, Ren</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Xiao, Wen-Jiao</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Journal of Asian earth sciences</subfield><subfield code="d">Amsterdam [u.a.] : Elsevier Science, 1997</subfield><subfield code="g">194</subfield><subfield code="h">Online-Ressource</subfield><subfield code="w">(DE-627)303391960</subfield><subfield code="w">(DE-600)1494743-2</subfield><subfield code="w">(DE-576)106846035</subfield><subfield code="x">1878-5786</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:194</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ELV</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OPC-GGO</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_20</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_22</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_23</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_24</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_31</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_32</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_40</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_60</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_62</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_63</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_65</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_69</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_70</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_73</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_74</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_90</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_95</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_100</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_105</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_110</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_150</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_151</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_224</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_370</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_602</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_702</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2003</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2004</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2005</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2011</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2014</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2015</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2020</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2021</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2025</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2027</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2034</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2038</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2044</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2048</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2049</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2050</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2056</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2059</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2061</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2064</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2065</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2068</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2111</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2112</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2113</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2118</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2122</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2129</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2143</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2147</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2148</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2152</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2153</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2190</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2336</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2507</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_2522</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4035</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4037</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4112</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4125</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4126</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4242</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4251</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4305</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4313</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4323</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4324</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4325</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4326</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4333</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4334</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4335</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4338</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ILN_4393</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">38.00</subfield><subfield code="j">Geowissenschaften: Allgemeines</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">194</subfield></datafield></record></collection>
score	7.3996124

Nicht das Richtige dabei?

Schreiben Sie uns!

Early Cretaceous mafic dikes in the northern Qinling Orogenic Belt, central China: Implications for lithosphere delamination

Nicht das Richtige dabei?

Zugang & Verfügbarkeit

Vorhandene Bände

Nicht das Richtige dabei?