Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone

389 teleseismic events recorded by 126 seismic stations were used to study the upper mantle velocity structure of the central-southern segment of the Tan-Lu fault zone (TLF). Results show that (1) the upper mantle velocity presents strong lateral heterogeneity. The TLF is a velocity gradient zone wi...
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Gespeichert in:

Autor*in:	Zhao, Qiguang [verfasserIn] Fan, Xiaoping [verfasserIn] He, Yicheng [verfasserIn] Zheng, Leiming [verfasserIn] Sun, Yejun [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	Tan-Lu fault zone Teleseismic tomography Upper mantle velocity

Übergeordnetes Werk:	Enthalten in: Tectonophysics - Amsterdam [u.a.] : Elsevier, 1964, 804
Übergeordnetes Werk:	volume:804

DOI / URN:	10.1016/j.tecto.2021.228771

Katalog-ID:	ELV005772397

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520			\|a 389 teleseismic events recorded by 126 seismic stations were used to study the upper mantle velocity structure of the central-southern segment of the Tan-Lu fault zone (TLF). Results show that (1) the upper mantle velocity presents strong lateral heterogeneity. The TLF is a velocity gradient zone with a depth of 40–120 km, and with a high-velocity anomaly on its west and a low-velocity anomaly on its east. However, at a depth of 300–400 km, the velocity anomalies on both side of the TLF have changed, with a low-velocity anomaly on its west and a high-velocity anomaly on its east. At a depth of 500–600 km, high velocity anomalies are observed on both sides of the TLF, (2) the high velocity anomalies H1 and H2 are located beneath the Dabie fault-fold belt and Lower Yangtze fault block, respectively. The H1 may be the delaminated lithosphere, while the H2 may represent the subduction of the Paleo- Pacific plate. The upper mantle velocity anomalies on both sides of the TLF may reveal the subduction of the Paleo-Pacific plate and the backarc retreat movements.
650		4	\|a Tan-Lu fault zone
650		4	\|a Teleseismic tomography
650		4	\|a Upper mantle velocity
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700	1		\|a He, Yicheng \|e verfasserin \|4 aut
700	1		\|a Zheng, Leiming \|e verfasserin \|4 aut
700	1		\|a Sun, Yejun \|e verfasserin \|4 aut
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publishDate	2021
allfields	10.1016/j.tecto.2021.228771 doi (DE-627)ELV005772397 (ELSEVIER)S0040-1951(21)00055-X DE-627 ger DE-627 rda eng 550 DE-600 38.36 bkl 38.58 bkl Zhao, Qiguang verfasserin aut Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier 389 teleseismic events recorded by 126 seismic stations were used to study the upper mantle velocity structure of the central-southern segment of the Tan-Lu fault zone (TLF). Results show that (1) the upper mantle velocity presents strong lateral heterogeneity. The TLF is a velocity gradient zone with a depth of 40–120 km, and with a high-velocity anomaly on its west and a low-velocity anomaly on its east. However, at a depth of 300–400 km, the velocity anomalies on both side of the TLF have changed, with a low-velocity anomaly on its west and a high-velocity anomaly on its east. At a depth of 500–600 km, high velocity anomalies are observed on both sides of the TLF, (2) the high velocity anomalies H1 and H2 are located beneath the Dabie fault-fold belt and Lower Yangtze fault block, respectively. The H1 may be the delaminated lithosphere, while the H2 may represent the subduction of the Paleo- Pacific plate. The upper mantle velocity anomalies on both sides of the TLF may reveal the subduction of the Paleo-Pacific plate and the backarc retreat movements. Tan-Lu fault zone Teleseismic tomography Upper mantle velocity Fan, Xiaoping verfasserin aut He, Yicheng verfasserin aut Zheng, Leiming verfasserin aut Sun, Yejun verfasserin aut Enthalten in Tectonophysics Amsterdam [u.a.] : Elsevier, 1964 804 Online-Ressource (DE-627)320505952 (DE-600)2012830-7 (DE-576)098474197 1879-3266 nnns volume:804 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO SSG-OPC-GEO 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.36 Tektonik 38.58 Geomechanik AR 804
spelling	10.1016/j.tecto.2021.228771 doi (DE-627)ELV005772397 (ELSEVIER)S0040-1951(21)00055-X DE-627 ger DE-627 rda eng 550 DE-600 38.36 bkl 38.58 bkl Zhao, Qiguang verfasserin aut Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier 389 teleseismic events recorded by 126 seismic stations were used to study the upper mantle velocity structure of the central-southern segment of the Tan-Lu fault zone (TLF). Results show that (1) the upper mantle velocity presents strong lateral heterogeneity. The TLF is a velocity gradient zone with a depth of 40–120 km, and with a high-velocity anomaly on its west and a low-velocity anomaly on its east. However, at a depth of 300–400 km, the velocity anomalies on both side of the TLF have changed, with a low-velocity anomaly on its west and a high-velocity anomaly on its east. At a depth of 500–600 km, high velocity anomalies are observed on both sides of the TLF, (2) the high velocity anomalies H1 and H2 are located beneath the Dabie fault-fold belt and Lower Yangtze fault block, respectively. The H1 may be the delaminated lithosphere, while the H2 may represent the subduction of the Paleo- Pacific plate. The upper mantle velocity anomalies on both sides of the TLF may reveal the subduction of the Paleo-Pacific plate and the backarc retreat movements. Tan-Lu fault zone Teleseismic tomography Upper mantle velocity Fan, Xiaoping verfasserin aut He, Yicheng verfasserin aut Zheng, Leiming verfasserin aut Sun, Yejun verfasserin aut Enthalten in Tectonophysics Amsterdam [u.a.] : Elsevier, 1964 804 Online-Ressource (DE-627)320505952 (DE-600)2012830-7 (DE-576)098474197 1879-3266 nnns volume:804 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO SSG-OPC-GEO 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.36 Tektonik 38.58 Geomechanik AR 804
allfields_unstemmed	10.1016/j.tecto.2021.228771 doi (DE-627)ELV005772397 (ELSEVIER)S0040-1951(21)00055-X DE-627 ger DE-627 rda eng 550 DE-600 38.36 bkl 38.58 bkl Zhao, Qiguang verfasserin aut Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier 389 teleseismic events recorded by 126 seismic stations were used to study the upper mantle velocity structure of the central-southern segment of the Tan-Lu fault zone (TLF). Results show that (1) the upper mantle velocity presents strong lateral heterogeneity. The TLF is a velocity gradient zone with a depth of 40–120 km, and with a high-velocity anomaly on its west and a low-velocity anomaly on its east. However, at a depth of 300–400 km, the velocity anomalies on both side of the TLF have changed, with a low-velocity anomaly on its west and a high-velocity anomaly on its east. At a depth of 500–600 km, high velocity anomalies are observed on both sides of the TLF, (2) the high velocity anomalies H1 and H2 are located beneath the Dabie fault-fold belt and Lower Yangtze fault block, respectively. The H1 may be the delaminated lithosphere, while the H2 may represent the subduction of the Paleo- Pacific plate. The upper mantle velocity anomalies on both sides of the TLF may reveal the subduction of the Paleo-Pacific plate and the backarc retreat movements. Tan-Lu fault zone Teleseismic tomography Upper mantle velocity Fan, Xiaoping verfasserin aut He, Yicheng verfasserin aut Zheng, Leiming verfasserin aut Sun, Yejun verfasserin aut Enthalten in Tectonophysics Amsterdam [u.a.] : Elsevier, 1964 804 Online-Ressource (DE-627)320505952 (DE-600)2012830-7 (DE-576)098474197 1879-3266 nnns volume:804 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO SSG-OPC-GEO 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.36 Tektonik 38.58 Geomechanik AR 804
allfieldsGer	10.1016/j.tecto.2021.228771 doi (DE-627)ELV005772397 (ELSEVIER)S0040-1951(21)00055-X DE-627 ger DE-627 rda eng 550 DE-600 38.36 bkl 38.58 bkl Zhao, Qiguang verfasserin aut Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier 389 teleseismic events recorded by 126 seismic stations were used to study the upper mantle velocity structure of the central-southern segment of the Tan-Lu fault zone (TLF). Results show that (1) the upper mantle velocity presents strong lateral heterogeneity. The TLF is a velocity gradient zone with a depth of 40–120 km, and with a high-velocity anomaly on its west and a low-velocity anomaly on its east. However, at a depth of 300–400 km, the velocity anomalies on both side of the TLF have changed, with a low-velocity anomaly on its west and a high-velocity anomaly on its east. At a depth of 500–600 km, high velocity anomalies are observed on both sides of the TLF, (2) the high velocity anomalies H1 and H2 are located beneath the Dabie fault-fold belt and Lower Yangtze fault block, respectively. The H1 may be the delaminated lithosphere, while the H2 may represent the subduction of the Paleo- Pacific plate. The upper mantle velocity anomalies on both sides of the TLF may reveal the subduction of the Paleo-Pacific plate and the backarc retreat movements. Tan-Lu fault zone Teleseismic tomography Upper mantle velocity Fan, Xiaoping verfasserin aut He, Yicheng verfasserin aut Zheng, Leiming verfasserin aut Sun, Yejun verfasserin aut Enthalten in Tectonophysics Amsterdam [u.a.] : Elsevier, 1964 804 Online-Ressource (DE-627)320505952 (DE-600)2012830-7 (DE-576)098474197 1879-3266 nnns volume:804 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO SSG-OPC-GEO 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.36 Tektonik 38.58 Geomechanik AR 804
allfieldsSound	10.1016/j.tecto.2021.228771 doi (DE-627)ELV005772397 (ELSEVIER)S0040-1951(21)00055-X DE-627 ger DE-627 rda eng 550 DE-600 38.36 bkl 38.58 bkl Zhao, Qiguang verfasserin aut Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier 389 teleseismic events recorded by 126 seismic stations were used to study the upper mantle velocity structure of the central-southern segment of the Tan-Lu fault zone (TLF). Results show that (1) the upper mantle velocity presents strong lateral heterogeneity. The TLF is a velocity gradient zone with a depth of 40–120 km, and with a high-velocity anomaly on its west and a low-velocity anomaly on its east. However, at a depth of 300–400 km, the velocity anomalies on both side of the TLF have changed, with a low-velocity anomaly on its west and a high-velocity anomaly on its east. At a depth of 500–600 km, high velocity anomalies are observed on both sides of the TLF, (2) the high velocity anomalies H1 and H2 are located beneath the Dabie fault-fold belt and Lower Yangtze fault block, respectively. The H1 may be the delaminated lithosphere, while the H2 may represent the subduction of the Paleo- Pacific plate. The upper mantle velocity anomalies on both sides of the TLF may reveal the subduction of the Paleo-Pacific plate and the backarc retreat movements. Tan-Lu fault zone Teleseismic tomography Upper mantle velocity Fan, Xiaoping verfasserin aut He, Yicheng verfasserin aut Zheng, Leiming verfasserin aut Sun, Yejun verfasserin aut Enthalten in Tectonophysics Amsterdam [u.a.] : Elsevier, 1964 804 Online-Ressource (DE-627)320505952 (DE-600)2012830-7 (DE-576)098474197 1879-3266 nnns volume:804 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO SSG-OPC-GEO 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_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 38.36 Tektonik 38.58 Geomechanik AR 804
language	English
source	Enthalten in Tectonophysics 804 volume:804
sourceStr	Enthalten in Tectonophysics 804 volume:804
format_phy_str_mv	Article
bklname	Tektonik Geomechanik
institution	findex.gbv.de
topic_facet	Tan-Lu fault zone Teleseismic tomography Upper mantle velocity
dewey-raw	550
isfreeaccess_bool	false
container_title	Tectonophysics
authorswithroles_txt_mv	Zhao, Qiguang @@aut@@ Fan, Xiaoping @@aut@@ He, Yicheng @@aut@@ Zheng, Leiming @@aut@@ Sun, Yejun @@aut@@
publishDateDaySort_date	2021-01-01T00:00:00Z
hierarchy_top_id	320505952
dewey-sort	3550
id	ELV005772397
language_de	englisch
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author	Zhao, Qiguang
spellingShingle	Zhao, Qiguang ddc 550 bkl 38.36 bkl 38.58 misc Tan-Lu fault zone misc Teleseismic tomography misc Upper mantle velocity Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone
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topic_title	550 DE-600 38.36 bkl 38.58 bkl Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone Tan-Lu fault zone Teleseismic tomography Upper mantle velocity
topic	ddc 550 bkl 38.36 bkl 38.58 misc Tan-Lu fault zone misc Teleseismic tomography misc Upper mantle velocity
topic_unstemmed	ddc 550 bkl 38.36 bkl 38.58 misc Tan-Lu fault zone misc Teleseismic tomography misc Upper mantle velocity
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title	Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone
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title_full	Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone
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author_browse	Zhao, Qiguang Fan, Xiaoping He, Yicheng Zheng, Leiming Sun, Yejun
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title_sort	upper mantle velocity and its dynamic significance in the middle-southern segment of the tan-lu fault zone
title_auth	Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone
abstract	389 teleseismic events recorded by 126 seismic stations were used to study the upper mantle velocity structure of the central-southern segment of the Tan-Lu fault zone (TLF). Results show that (1) the upper mantle velocity presents strong lateral heterogeneity. The TLF is a velocity gradient zone with a depth of 40–120 km, and with a high-velocity anomaly on its west and a low-velocity anomaly on its east. However, at a depth of 300–400 km, the velocity anomalies on both side of the TLF have changed, with a low-velocity anomaly on its west and a high-velocity anomaly on its east. At a depth of 500–600 km, high velocity anomalies are observed on both sides of the TLF, (2) the high velocity anomalies H1 and H2 are located beneath the Dabie fault-fold belt and Lower Yangtze fault block, respectively. The H1 may be the delaminated lithosphere, while the H2 may represent the subduction of the Paleo- Pacific plate. The upper mantle velocity anomalies on both sides of the TLF may reveal the subduction of the Paleo-Pacific plate and the backarc retreat movements.
abstractGer	389 teleseismic events recorded by 126 seismic stations were used to study the upper mantle velocity structure of the central-southern segment of the Tan-Lu fault zone (TLF). Results show that (1) the upper mantle velocity presents strong lateral heterogeneity. The TLF is a velocity gradient zone with a depth of 40–120 km, and with a high-velocity anomaly on its west and a low-velocity anomaly on its east. However, at a depth of 300–400 km, the velocity anomalies on both side of the TLF have changed, with a low-velocity anomaly on its west and a high-velocity anomaly on its east. At a depth of 500–600 km, high velocity anomalies are observed on both sides of the TLF, (2) the high velocity anomalies H1 and H2 are located beneath the Dabie fault-fold belt and Lower Yangtze fault block, respectively. The H1 may be the delaminated lithosphere, while the H2 may represent the subduction of the Paleo- Pacific plate. The upper mantle velocity anomalies on both sides of the TLF may reveal the subduction of the Paleo-Pacific plate and the backarc retreat movements.
abstract_unstemmed	389 teleseismic events recorded by 126 seismic stations were used to study the upper mantle velocity structure of the central-southern segment of the Tan-Lu fault zone (TLF). Results show that (1) the upper mantle velocity presents strong lateral heterogeneity. The TLF is a velocity gradient zone with a depth of 40–120 km, and with a high-velocity anomaly on its west and a low-velocity anomaly on its east. However, at a depth of 300–400 km, the velocity anomalies on both side of the TLF have changed, with a low-velocity anomaly on its west and a high-velocity anomaly on its east. At a depth of 500–600 km, high velocity anomalies are observed on both sides of the TLF, (2) the high velocity anomalies H1 and H2 are located beneath the Dabie fault-fold belt and Lower Yangtze fault block, respectively. The H1 may be the delaminated lithosphere, while the H2 may represent the subduction of the Paleo- Pacific plate. The upper mantle velocity anomalies on both sides of the TLF may reveal the subduction of the Paleo-Pacific plate and the backarc retreat movements.
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title_short	Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone
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author2	Fan, Xiaoping He, Yicheng Zheng, Leiming Sun, Yejun
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doi_str	10.1016/j.tecto.2021.228771
up_date	2024-07-06T19:06:39.155Z
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Upper mantle velocity and its dynamic significance in the middle-southern segment of the Tan-Lu fault zone

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Vorhandene Bände

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