Calc-alkaline volcanic rocks and zircon ages of the late Tonian: early Cryogenian arc-related Big Naryn Complex in the Eastern Djetim-Too Range, Middle Tianshan block, Kyrgyzstan
Abstract The Big Naryn Complex (BNC) in the East Djetim-Too Range of the Kyrgyz Middle Tianshan block is a tectonized, at least 2 km thick sequence of predominantly felsic to intermediate volcanic rocks intruded by porphyric rhyolite sills. It overlies a basement of metamorphic rocks and is overlain...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Terbishalieva, Baiansuluu [verfasserIn] Timmerman, Martin Jan [verfasserIn] Mikolaichuk, Alexander [verfasserIn] Altenberger, Uwe [verfasserIn] Sláma, Jiří [verfasserIn] Schleicher, Anja Maria [verfasserIn] Sudo, Masafumi [verfasserIn] Sobel, Edward R. [verfasserIn] Cichy, Sarah B. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2020 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Geologische Rundschau - Berlin : Springer, 1910, 110(2020), 1 vom: 24. Nov., Seite 353-375 |
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| Übergeordnetes Werk: |
volume:110 ; year:2020 ; number:1 ; day:24 ; month:11 ; pages:353-375 |
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| DOI / URN: |
10.1007/s00531-020-01956-z |
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SPR043078516 |
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| 245 | 1 | 0 | |a Calc-alkaline volcanic rocks and zircon ages of the late Tonian: early Cryogenian arc-related Big Naryn Complex in the Eastern Djetim-Too Range, Middle Tianshan block, Kyrgyzstan |
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| 520 | |a Abstract The Big Naryn Complex (BNC) in the East Djetim-Too Range of the Kyrgyz Middle Tianshan block is a tectonized, at least 2 km thick sequence of predominantly felsic to intermediate volcanic rocks intruded by porphyric rhyolite sills. It overlies a basement of metamorphic rocks and is overlain by late Neoproterozoic Djetim-Too Formation sediments; these also occur as tectonic intercalations in the BNC. The up to ca. 1100 m thick Lower Member is composed of predominantly rhyolites-to-dacites and minor basalts, while the at least 900 m thick pyroclastic Upper Member is dominated by rhyolitic-to-dacitic ignimbrites. Porphyric rhyolite sills are concentrated at the top of the Lower Member. A Lower Member rhyolite and a sill sample have LA-ICP-MS U–Pb zircon crystallization ages of 726.1 ± 2.2 Ma and 720.3 ± 6.5 Ma, respectively, showing that most of the magmatism occurred within a short time span in the late Tonian–early Cryogenian. Inherited zircons in the sill sample have Neoarchean (2.63, 2.64 Ga), Paleo- (2.33–1.81 Ga), Meso- (1.55 Ga), and Neoproterozoic (ca. 815 Ma) ages, and were derived from a heterogeneous Kuilyu Complex basement. A 1751 ± 7 Ma 40Ar/39Ar age for amphibole from metagabbro is the age of cooling subsequent to Paleoproterozoic metamorphism of the Kuilyu Complex. The large amount of pyroclastic rocks, and their major and trace element compositions, the presence of Neoarchean to Neoproterozoic inherited zircons and a depositional basement of metamorphic rocks point to formation of the BNC in a continental magmatic arc setting. | ||
| 650 | 4 | |a Tianshan orogenic belt |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Big Naryn complex |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Tonian–Cryogenian |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Magmatic arc |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Calc-alkaline |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Kuilyu complex |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Timmerman, Martin Jan |e verfasserin |4 aut | |
| 700 | 1 | |a Mikolaichuk, Alexander |e verfasserin |4 aut | |
| 700 | 1 | |a Altenberger, Uwe |e verfasserin |4 aut | |
| 700 | 1 | |a Sláma, Jiří |e verfasserin |4 aut | |
| 700 | 1 | |a Schleicher, Anja Maria |e verfasserin |4 aut | |
| 700 | 1 | |a Sudo, Masafumi |e verfasserin |4 aut | |
| 700 | 1 | |a Sobel, Edward R. |e verfasserin |4 aut | |
| 700 | 1 | |a Cichy, Sarah B. |e verfasserin |4 aut | |
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10.1007/s00531-020-01956-z doi (DE-627)SPR043078516 (DE-599)SPRs00531-020-01956-z-e (SPR)s00531-020-01956-z-e DE-627 ger DE-627 rakwb eng 550 ASE 38.10 bkl Terbishalieva, Baiansuluu verfasserin aut Calc-alkaline volcanic rocks and zircon ages of the late Tonian: early Cryogenian arc-related Big Naryn Complex in the Eastern Djetim-Too Range, Middle Tianshan block, Kyrgyzstan 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The Big Naryn Complex (BNC) in the East Djetim-Too Range of the Kyrgyz Middle Tianshan block is a tectonized, at least 2 km thick sequence of predominantly felsic to intermediate volcanic rocks intruded by porphyric rhyolite sills. It overlies a basement of metamorphic rocks and is overlain by late Neoproterozoic Djetim-Too Formation sediments; these also occur as tectonic intercalations in the BNC. The up to ca. 1100 m thick Lower Member is composed of predominantly rhyolites-to-dacites and minor basalts, while the at least 900 m thick pyroclastic Upper Member is dominated by rhyolitic-to-dacitic ignimbrites. Porphyric rhyolite sills are concentrated at the top of the Lower Member. A Lower Member rhyolite and a sill sample have LA-ICP-MS U–Pb zircon crystallization ages of 726.1 ± 2.2 Ma and 720.3 ± 6.5 Ma, respectively, showing that most of the magmatism occurred within a short time span in the late Tonian–early Cryogenian. Inherited zircons in the sill sample have Neoarchean (2.63, 2.64 Ga), Paleo- (2.33–1.81 Ga), Meso- (1.55 Ga), and Neoproterozoic (ca. 815 Ma) ages, and were derived from a heterogeneous Kuilyu Complex basement. A 1751 ± 7 Ma 40Ar/39Ar age for amphibole from metagabbro is the age of cooling subsequent to Paleoproterozoic metamorphism of the Kuilyu Complex. The large amount of pyroclastic rocks, and their major and trace element compositions, the presence of Neoarchean to Neoproterozoic inherited zircons and a depositional basement of metamorphic rocks point to formation of the BNC in a continental magmatic arc setting. Tianshan orogenic belt (dpeaa)DE-He213 Big Naryn complex (dpeaa)DE-He213 Tonian–Cryogenian (dpeaa)DE-He213 Magmatic arc (dpeaa)DE-He213 Calc-alkaline (dpeaa)DE-He213 Kuilyu complex (dpeaa)DE-He213 Timmerman, Martin Jan verfasserin aut Mikolaichuk, Alexander verfasserin aut Altenberger, Uwe verfasserin aut Sláma, Jiří verfasserin aut Schleicher, Anja Maria verfasserin aut Sudo, Masafumi verfasserin aut Sobel, Edward R. verfasserin aut Cichy, Sarah B. verfasserin aut Enthalten in Geologische Rundschau Berlin : Springer, 1910 110(2020), 1 vom: 24. Nov., Seite 353-375 (DE-627)47265019X (DE-600)2168407-8 1432-1149 nnns volume:110 year:2020 number:1 day:24 month:11 pages:353-375 https://dx.doi.org/10.1007/s00531-020-01956-z kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 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_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 38.10 ASE AR 110 2020 1 24 11 353-375 |
| spelling |
10.1007/s00531-020-01956-z doi (DE-627)SPR043078516 (DE-599)SPRs00531-020-01956-z-e (SPR)s00531-020-01956-z-e DE-627 ger DE-627 rakwb eng 550 ASE 38.10 bkl Terbishalieva, Baiansuluu verfasserin aut Calc-alkaline volcanic rocks and zircon ages of the late Tonian: early Cryogenian arc-related Big Naryn Complex in the Eastern Djetim-Too Range, Middle Tianshan block, Kyrgyzstan 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The Big Naryn Complex (BNC) in the East Djetim-Too Range of the Kyrgyz Middle Tianshan block is a tectonized, at least 2 km thick sequence of predominantly felsic to intermediate volcanic rocks intruded by porphyric rhyolite sills. It overlies a basement of metamorphic rocks and is overlain by late Neoproterozoic Djetim-Too Formation sediments; these also occur as tectonic intercalations in the BNC. The up to ca. 1100 m thick Lower Member is composed of predominantly rhyolites-to-dacites and minor basalts, while the at least 900 m thick pyroclastic Upper Member is dominated by rhyolitic-to-dacitic ignimbrites. Porphyric rhyolite sills are concentrated at the top of the Lower Member. A Lower Member rhyolite and a sill sample have LA-ICP-MS U–Pb zircon crystallization ages of 726.1 ± 2.2 Ma and 720.3 ± 6.5 Ma, respectively, showing that most of the magmatism occurred within a short time span in the late Tonian–early Cryogenian. Inherited zircons in the sill sample have Neoarchean (2.63, 2.64 Ga), Paleo- (2.33–1.81 Ga), Meso- (1.55 Ga), and Neoproterozoic (ca. 815 Ma) ages, and were derived from a heterogeneous Kuilyu Complex basement. A 1751 ± 7 Ma 40Ar/39Ar age for amphibole from metagabbro is the age of cooling subsequent to Paleoproterozoic metamorphism of the Kuilyu Complex. The large amount of pyroclastic rocks, and their major and trace element compositions, the presence of Neoarchean to Neoproterozoic inherited zircons and a depositional basement of metamorphic rocks point to formation of the BNC in a continental magmatic arc setting. Tianshan orogenic belt (dpeaa)DE-He213 Big Naryn complex (dpeaa)DE-He213 Tonian–Cryogenian (dpeaa)DE-He213 Magmatic arc (dpeaa)DE-He213 Calc-alkaline (dpeaa)DE-He213 Kuilyu complex (dpeaa)DE-He213 Timmerman, Martin Jan verfasserin aut Mikolaichuk, Alexander verfasserin aut Altenberger, Uwe verfasserin aut Sláma, Jiří verfasserin aut Schleicher, Anja Maria verfasserin aut Sudo, Masafumi verfasserin aut Sobel, Edward R. verfasserin aut Cichy, Sarah B. verfasserin aut Enthalten in Geologische Rundschau Berlin : Springer, 1910 110(2020), 1 vom: 24. Nov., Seite 353-375 (DE-627)47265019X (DE-600)2168407-8 1432-1149 nnns volume:110 year:2020 number:1 day:24 month:11 pages:353-375 https://dx.doi.org/10.1007/s00531-020-01956-z kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 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_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 38.10 ASE AR 110 2020 1 24 11 353-375 |
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10.1007/s00531-020-01956-z doi (DE-627)SPR043078516 (DE-599)SPRs00531-020-01956-z-e (SPR)s00531-020-01956-z-e DE-627 ger DE-627 rakwb eng 550 ASE 38.10 bkl Terbishalieva, Baiansuluu verfasserin aut Calc-alkaline volcanic rocks and zircon ages of the late Tonian: early Cryogenian arc-related Big Naryn Complex in the Eastern Djetim-Too Range, Middle Tianshan block, Kyrgyzstan 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The Big Naryn Complex (BNC) in the East Djetim-Too Range of the Kyrgyz Middle Tianshan block is a tectonized, at least 2 km thick sequence of predominantly felsic to intermediate volcanic rocks intruded by porphyric rhyolite sills. It overlies a basement of metamorphic rocks and is overlain by late Neoproterozoic Djetim-Too Formation sediments; these also occur as tectonic intercalations in the BNC. The up to ca. 1100 m thick Lower Member is composed of predominantly rhyolites-to-dacites and minor basalts, while the at least 900 m thick pyroclastic Upper Member is dominated by rhyolitic-to-dacitic ignimbrites. Porphyric rhyolite sills are concentrated at the top of the Lower Member. A Lower Member rhyolite and a sill sample have LA-ICP-MS U–Pb zircon crystallization ages of 726.1 ± 2.2 Ma and 720.3 ± 6.5 Ma, respectively, showing that most of the magmatism occurred within a short time span in the late Tonian–early Cryogenian. Inherited zircons in the sill sample have Neoarchean (2.63, 2.64 Ga), Paleo- (2.33–1.81 Ga), Meso- (1.55 Ga), and Neoproterozoic (ca. 815 Ma) ages, and were derived from a heterogeneous Kuilyu Complex basement. A 1751 ± 7 Ma 40Ar/39Ar age for amphibole from metagabbro is the age of cooling subsequent to Paleoproterozoic metamorphism of the Kuilyu Complex. The large amount of pyroclastic rocks, and their major and trace element compositions, the presence of Neoarchean to Neoproterozoic inherited zircons and a depositional basement of metamorphic rocks point to formation of the BNC in a continental magmatic arc setting. Tianshan orogenic belt (dpeaa)DE-He213 Big Naryn complex (dpeaa)DE-He213 Tonian–Cryogenian (dpeaa)DE-He213 Magmatic arc (dpeaa)DE-He213 Calc-alkaline (dpeaa)DE-He213 Kuilyu complex (dpeaa)DE-He213 Timmerman, Martin Jan verfasserin aut Mikolaichuk, Alexander verfasserin aut Altenberger, Uwe verfasserin aut Sláma, Jiří verfasserin aut Schleicher, Anja Maria verfasserin aut Sudo, Masafumi verfasserin aut Sobel, Edward R. verfasserin aut Cichy, Sarah B. verfasserin aut Enthalten in Geologische Rundschau Berlin : Springer, 1910 110(2020), 1 vom: 24. Nov., Seite 353-375 (DE-627)47265019X (DE-600)2168407-8 1432-1149 nnns volume:110 year:2020 number:1 day:24 month:11 pages:353-375 https://dx.doi.org/10.1007/s00531-020-01956-z kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 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_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 38.10 ASE AR 110 2020 1 24 11 353-375 |
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10.1007/s00531-020-01956-z doi (DE-627)SPR043078516 (DE-599)SPRs00531-020-01956-z-e (SPR)s00531-020-01956-z-e DE-627 ger DE-627 rakwb eng 550 ASE 38.10 bkl Terbishalieva, Baiansuluu verfasserin aut Calc-alkaline volcanic rocks and zircon ages of the late Tonian: early Cryogenian arc-related Big Naryn Complex in the Eastern Djetim-Too Range, Middle Tianshan block, Kyrgyzstan 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The Big Naryn Complex (BNC) in the East Djetim-Too Range of the Kyrgyz Middle Tianshan block is a tectonized, at least 2 km thick sequence of predominantly felsic to intermediate volcanic rocks intruded by porphyric rhyolite sills. It overlies a basement of metamorphic rocks and is overlain by late Neoproterozoic Djetim-Too Formation sediments; these also occur as tectonic intercalations in the BNC. The up to ca. 1100 m thick Lower Member is composed of predominantly rhyolites-to-dacites and minor basalts, while the at least 900 m thick pyroclastic Upper Member is dominated by rhyolitic-to-dacitic ignimbrites. Porphyric rhyolite sills are concentrated at the top of the Lower Member. A Lower Member rhyolite and a sill sample have LA-ICP-MS U–Pb zircon crystallization ages of 726.1 ± 2.2 Ma and 720.3 ± 6.5 Ma, respectively, showing that most of the magmatism occurred within a short time span in the late Tonian–early Cryogenian. Inherited zircons in the sill sample have Neoarchean (2.63, 2.64 Ga), Paleo- (2.33–1.81 Ga), Meso- (1.55 Ga), and Neoproterozoic (ca. 815 Ma) ages, and were derived from a heterogeneous Kuilyu Complex basement. A 1751 ± 7 Ma 40Ar/39Ar age for amphibole from metagabbro is the age of cooling subsequent to Paleoproterozoic metamorphism of the Kuilyu Complex. The large amount of pyroclastic rocks, and their major and trace element compositions, the presence of Neoarchean to Neoproterozoic inherited zircons and a depositional basement of metamorphic rocks point to formation of the BNC in a continental magmatic arc setting. Tianshan orogenic belt (dpeaa)DE-He213 Big Naryn complex (dpeaa)DE-He213 Tonian–Cryogenian (dpeaa)DE-He213 Magmatic arc (dpeaa)DE-He213 Calc-alkaline (dpeaa)DE-He213 Kuilyu complex (dpeaa)DE-He213 Timmerman, Martin Jan verfasserin aut Mikolaichuk, Alexander verfasserin aut Altenberger, Uwe verfasserin aut Sláma, Jiří verfasserin aut Schleicher, Anja Maria verfasserin aut Sudo, Masafumi verfasserin aut Sobel, Edward R. verfasserin aut Cichy, Sarah B. verfasserin aut Enthalten in Geologische Rundschau Berlin : Springer, 1910 110(2020), 1 vom: 24. Nov., Seite 353-375 (DE-627)47265019X (DE-600)2168407-8 1432-1149 nnns volume:110 year:2020 number:1 day:24 month:11 pages:353-375 https://dx.doi.org/10.1007/s00531-020-01956-z kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 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_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 38.10 ASE AR 110 2020 1 24 11 353-375 |
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10.1007/s00531-020-01956-z doi (DE-627)SPR043078516 (DE-599)SPRs00531-020-01956-z-e (SPR)s00531-020-01956-z-e DE-627 ger DE-627 rakwb eng 550 ASE 38.10 bkl Terbishalieva, Baiansuluu verfasserin aut Calc-alkaline volcanic rocks and zircon ages of the late Tonian: early Cryogenian arc-related Big Naryn Complex in the Eastern Djetim-Too Range, Middle Tianshan block, Kyrgyzstan 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The Big Naryn Complex (BNC) in the East Djetim-Too Range of the Kyrgyz Middle Tianshan block is a tectonized, at least 2 km thick sequence of predominantly felsic to intermediate volcanic rocks intruded by porphyric rhyolite sills. It overlies a basement of metamorphic rocks and is overlain by late Neoproterozoic Djetim-Too Formation sediments; these also occur as tectonic intercalations in the BNC. The up to ca. 1100 m thick Lower Member is composed of predominantly rhyolites-to-dacites and minor basalts, while the at least 900 m thick pyroclastic Upper Member is dominated by rhyolitic-to-dacitic ignimbrites. Porphyric rhyolite sills are concentrated at the top of the Lower Member. A Lower Member rhyolite and a sill sample have LA-ICP-MS U–Pb zircon crystallization ages of 726.1 ± 2.2 Ma and 720.3 ± 6.5 Ma, respectively, showing that most of the magmatism occurred within a short time span in the late Tonian–early Cryogenian. Inherited zircons in the sill sample have Neoarchean (2.63, 2.64 Ga), Paleo- (2.33–1.81 Ga), Meso- (1.55 Ga), and Neoproterozoic (ca. 815 Ma) ages, and were derived from a heterogeneous Kuilyu Complex basement. A 1751 ± 7 Ma 40Ar/39Ar age for amphibole from metagabbro is the age of cooling subsequent to Paleoproterozoic metamorphism of the Kuilyu Complex. The large amount of pyroclastic rocks, and their major and trace element compositions, the presence of Neoarchean to Neoproterozoic inherited zircons and a depositional basement of metamorphic rocks point to formation of the BNC in a continental magmatic arc setting. Tianshan orogenic belt (dpeaa)DE-He213 Big Naryn complex (dpeaa)DE-He213 Tonian–Cryogenian (dpeaa)DE-He213 Magmatic arc (dpeaa)DE-He213 Calc-alkaline (dpeaa)DE-He213 Kuilyu complex (dpeaa)DE-He213 Timmerman, Martin Jan verfasserin aut Mikolaichuk, Alexander verfasserin aut Altenberger, Uwe verfasserin aut Sláma, Jiří verfasserin aut Schleicher, Anja Maria verfasserin aut Sudo, Masafumi verfasserin aut Sobel, Edward R. verfasserin aut Cichy, Sarah B. verfasserin aut Enthalten in Geologische Rundschau Berlin : Springer, 1910 110(2020), 1 vom: 24. Nov., Seite 353-375 (DE-627)47265019X (DE-600)2168407-8 1432-1149 nnns volume:110 year:2020 number:1 day:24 month:11 pages:353-375 https://dx.doi.org/10.1007/s00531-020-01956-z kostenfrei Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 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_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_647 GBV_ILN_702 38.10 ASE AR 110 2020 1 24 11 353-375 |
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calc-alkaline volcanic rocks and zircon ages of the late tonian: early cryogenian arc-related big naryn complex in the eastern djetim-too range, middle tianshan block, kyrgyzstan |
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Calc-alkaline volcanic rocks and zircon ages of the late Tonian: early Cryogenian arc-related Big Naryn Complex in the Eastern Djetim-Too Range, Middle Tianshan block, Kyrgyzstan |
| abstract |
Abstract The Big Naryn Complex (BNC) in the East Djetim-Too Range of the Kyrgyz Middle Tianshan block is a tectonized, at least 2 km thick sequence of predominantly felsic to intermediate volcanic rocks intruded by porphyric rhyolite sills. It overlies a basement of metamorphic rocks and is overlain by late Neoproterozoic Djetim-Too Formation sediments; these also occur as tectonic intercalations in the BNC. The up to ca. 1100 m thick Lower Member is composed of predominantly rhyolites-to-dacites and minor basalts, while the at least 900 m thick pyroclastic Upper Member is dominated by rhyolitic-to-dacitic ignimbrites. Porphyric rhyolite sills are concentrated at the top of the Lower Member. A Lower Member rhyolite and a sill sample have LA-ICP-MS U–Pb zircon crystallization ages of 726.1 ± 2.2 Ma and 720.3 ± 6.5 Ma, respectively, showing that most of the magmatism occurred within a short time span in the late Tonian–early Cryogenian. Inherited zircons in the sill sample have Neoarchean (2.63, 2.64 Ga), Paleo- (2.33–1.81 Ga), Meso- (1.55 Ga), and Neoproterozoic (ca. 815 Ma) ages, and were derived from a heterogeneous Kuilyu Complex basement. A 1751 ± 7 Ma 40Ar/39Ar age for amphibole from metagabbro is the age of cooling subsequent to Paleoproterozoic metamorphism of the Kuilyu Complex. The large amount of pyroclastic rocks, and their major and trace element compositions, the presence of Neoarchean to Neoproterozoic inherited zircons and a depositional basement of metamorphic rocks point to formation of the BNC in a continental magmatic arc setting. |
| abstractGer |
Abstract The Big Naryn Complex (BNC) in the East Djetim-Too Range of the Kyrgyz Middle Tianshan block is a tectonized, at least 2 km thick sequence of predominantly felsic to intermediate volcanic rocks intruded by porphyric rhyolite sills. It overlies a basement of metamorphic rocks and is overlain by late Neoproterozoic Djetim-Too Formation sediments; these also occur as tectonic intercalations in the BNC. The up to ca. 1100 m thick Lower Member is composed of predominantly rhyolites-to-dacites and minor basalts, while the at least 900 m thick pyroclastic Upper Member is dominated by rhyolitic-to-dacitic ignimbrites. Porphyric rhyolite sills are concentrated at the top of the Lower Member. A Lower Member rhyolite and a sill sample have LA-ICP-MS U–Pb zircon crystallization ages of 726.1 ± 2.2 Ma and 720.3 ± 6.5 Ma, respectively, showing that most of the magmatism occurred within a short time span in the late Tonian–early Cryogenian. Inherited zircons in the sill sample have Neoarchean (2.63, 2.64 Ga), Paleo- (2.33–1.81 Ga), Meso- (1.55 Ga), and Neoproterozoic (ca. 815 Ma) ages, and were derived from a heterogeneous Kuilyu Complex basement. A 1751 ± 7 Ma 40Ar/39Ar age for amphibole from metagabbro is the age of cooling subsequent to Paleoproterozoic metamorphism of the Kuilyu Complex. The large amount of pyroclastic rocks, and their major and trace element compositions, the presence of Neoarchean to Neoproterozoic inherited zircons and a depositional basement of metamorphic rocks point to formation of the BNC in a continental magmatic arc setting. |
| abstract_unstemmed |
Abstract The Big Naryn Complex (BNC) in the East Djetim-Too Range of the Kyrgyz Middle Tianshan block is a tectonized, at least 2 km thick sequence of predominantly felsic to intermediate volcanic rocks intruded by porphyric rhyolite sills. It overlies a basement of metamorphic rocks and is overlain by late Neoproterozoic Djetim-Too Formation sediments; these also occur as tectonic intercalations in the BNC. The up to ca. 1100 m thick Lower Member is composed of predominantly rhyolites-to-dacites and minor basalts, while the at least 900 m thick pyroclastic Upper Member is dominated by rhyolitic-to-dacitic ignimbrites. Porphyric rhyolite sills are concentrated at the top of the Lower Member. A Lower Member rhyolite and a sill sample have LA-ICP-MS U–Pb zircon crystallization ages of 726.1 ± 2.2 Ma and 720.3 ± 6.5 Ma, respectively, showing that most of the magmatism occurred within a short time span in the late Tonian–early Cryogenian. Inherited zircons in the sill sample have Neoarchean (2.63, 2.64 Ga), Paleo- (2.33–1.81 Ga), Meso- (1.55 Ga), and Neoproterozoic (ca. 815 Ma) ages, and were derived from a heterogeneous Kuilyu Complex basement. A 1751 ± 7 Ma 40Ar/39Ar age for amphibole from metagabbro is the age of cooling subsequent to Paleoproterozoic metamorphism of the Kuilyu Complex. The large amount of pyroclastic rocks, and their major and trace element compositions, the presence of Neoarchean to Neoproterozoic inherited zircons and a depositional basement of metamorphic rocks point to formation of the BNC in a continental magmatic arc setting. |
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Calc-alkaline volcanic rocks and zircon ages of the late Tonian: early Cryogenian arc-related Big Naryn Complex in the Eastern Djetim-Too Range, Middle Tianshan block, Kyrgyzstan |
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https://dx.doi.org/10.1007/s00531-020-01956-z |
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Timmerman, Martin Jan Mikolaichuk, Alexander Altenberger, Uwe Sláma, Jiří Schleicher, Anja Maria Sudo, Masafumi Sobel, Edward R. Cichy, Sarah B. |
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Timmerman, Martin Jan Mikolaichuk, Alexander Altenberger, Uwe Sláma, Jiří Schleicher, Anja Maria Sudo, Masafumi Sobel, Edward R. Cichy, Sarah B. |
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10.1007/s00531-020-01956-z |
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