A Permian large igneous province in Tarim and Central Asian orogenic belt, NW China: Results of a ca. 275 Ma mantle plume?
New sensitive high-resolution ion microprobe (SHRIMP) U-Pb zircon ages, geochemical data, and a synthesis of existing stratigraphic, geochronologic, and geochemical results from the Tarim block and the Central Asian orogenic belt in northwestern China suggest the presence of a Permian (ca. 275 Ma) l...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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Geological Society of America
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/25373 |
| _version_ | 1848751690429235200 |
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| author | Zhang, C. Li, Zheng-Xiang Li, X. Xu, Y. Zhou, G. Ye, H. |
| author_facet | Zhang, C. Li, Zheng-Xiang Li, X. Xu, Y. Zhou, G. Ye, H. |
| author_sort | Zhang, C. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | New sensitive high-resolution ion microprobe (SHRIMP) U-Pb zircon ages, geochemical data, and a synthesis of existing stratigraphic, geochronologic, and geochemical results from the Tarim block and the Central Asian orogenic belt in northwestern China suggest the presence of a Permian (ca. 275 Ma) large igneous province (the Bachu large igneous province). The large igneous province consists predominantly of coeval mafic rocks (basalts and mafic-ultramafic intrusions) having an aerial coverage of more than 600,000 km2, and its formation was accompanied by voluminous emplacement of A-type granites. This large igneous province, interpreted to be of mantle plume origin, is ~15 m.y. older than the ca. 260 Ma Emeishan large igneous province in southwestern China and ~25 m.y. older than the 251 Ma Siberian Trap in Russia.Such a sudden flair up of plume activity in the Permian may representthe early stage of the Pangean superplume event. The Permian plumes likely played a role in late Paleozoic rapid continental crustal growth in the Central Asian orogenic belt. In addition, there appear to be two types of mantle geochemical provinces (domains) in the region, a long-term enriched Tarim province and a subduction-metasomatized and depleted Central Asian orogenic belt province. |
| first_indexed | 2025-11-14T07:56:44Z |
| format | Journal Article |
| id | curtin-20.500.11937-25373 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:56:44Z |
| publishDate | 2010 |
| publisher | Geological Society of America |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-253732017-09-13T15:53:33Z A Permian large igneous province in Tarim and Central Asian orogenic belt, NW China: Results of a ca. 275 Ma mantle plume? Zhang, C. Li, Zheng-Xiang Li, X. Xu, Y. Zhou, G. Ye, H. Permian plumes Central Asian orogenic belt coeval mafic Tarim province continental crustal growth New sensitive high-resolution ion microprobe (SHRIMP) U-Pb zircon ages, geochemical data, and a synthesis of existing stratigraphic, geochronologic, and geochemical results from the Tarim block and the Central Asian orogenic belt in northwestern China suggest the presence of a Permian (ca. 275 Ma) large igneous province (the Bachu large igneous province). The large igneous province consists predominantly of coeval mafic rocks (basalts and mafic-ultramafic intrusions) having an aerial coverage of more than 600,000 km2, and its formation was accompanied by voluminous emplacement of A-type granites. This large igneous province, interpreted to be of mantle plume origin, is ~15 m.y. older than the ca. 260 Ma Emeishan large igneous province in southwestern China and ~25 m.y. older than the 251 Ma Siberian Trap in Russia.Such a sudden flair up of plume activity in the Permian may representthe early stage of the Pangean superplume event. The Permian plumes likely played a role in late Paleozoic rapid continental crustal growth in the Central Asian orogenic belt. In addition, there appear to be two types of mantle geochemical provinces (domains) in the region, a long-term enriched Tarim province and a subduction-metasomatized and depleted Central Asian orogenic belt province. 2010 Journal Article http://hdl.handle.net/20.500.11937/25373 10.1130/B30007.1 Geological Society of America restricted |
| spellingShingle | Permian plumes Central Asian orogenic belt coeval mafic Tarim province continental crustal growth Zhang, C. Li, Zheng-Xiang Li, X. Xu, Y. Zhou, G. Ye, H. A Permian large igneous province in Tarim and Central Asian orogenic belt, NW China: Results of a ca. 275 Ma mantle plume? |
| title | A Permian large igneous province in Tarim and Central Asian orogenic belt, NW China: Results of a ca. 275 Ma mantle plume? |
| title_full | A Permian large igneous province in Tarim and Central Asian orogenic belt, NW China: Results of a ca. 275 Ma mantle plume? |
| title_fullStr | A Permian large igneous province in Tarim and Central Asian orogenic belt, NW China: Results of a ca. 275 Ma mantle plume? |
| title_full_unstemmed | A Permian large igneous province in Tarim and Central Asian orogenic belt, NW China: Results of a ca. 275 Ma mantle plume? |
| title_short | A Permian large igneous province in Tarim and Central Asian orogenic belt, NW China: Results of a ca. 275 Ma mantle plume? |
| title_sort | permian large igneous province in tarim and central asian orogenic belt, nw china: results of a ca. 275 ma mantle plume? |
| topic | Permian plumes Central Asian orogenic belt coeval mafic Tarim province continental crustal growth |
| url | http://hdl.handle.net/20.500.11937/25373 |