Institutional Repository of State Key Laboratory of Lithospheric Evolution
| Tectonic regime transition of the western South China Block in early Cambrian: Evidence from the Meishucun volcanic ash beds | |
| Yang, Chuan1,2,3; Li, Xian-Hua3,4; Zhu, Mao-Yan1,2,4 | |
| 2022-12-01 | |
| Source Publication | PALAEOWORLD
 |
| ISSN | 1871-174X |
| Volume | 31Issue:4Pages:591-599 |
| Abstract | The tectonic evolution of the South China Block, especially its western part, is ambiguous in the early Paleozoic owing to the lack of contemporary tectono-magmatic records. Thick ash beds preserved in the early Cambrian successions in the eastern Yunnan Province of the western South China Block provide new insights into their magmatic origins and tectonic evolution. We report here integrated in-situ zircon U-Pb data, Hf-O isotopes, and whole-rock geochemistry of two early Cambrian ash beds (Bed 5 and Bed 9) from the Meishucun section in the eastern Yunnan Province. SIMS zircon U-Pb data indicate the two ash layers were deposited at 533.2 +/- 3.8 Ma and 526.2 +/- 4.1 Ma, respectively. Zircon Hf-O isotopes and whole-rock geochemistry of the two ash beds demonstrate crustal origins of their parental magma and their close affinities to A-type granites. These features suggest that the ash beds were formed in extensional settings and the tectonic regime of the study area switched from compression to extension in the early Cambrian. The Meishucun volcanic records, in combination with other late Ediacaran-early Paleozoic magmatism along the northern margin of East Gondwana, may represent the initial opening phase of the Paleo-Tethys Ocean. (c) 2022 Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. All rights reserved. |
| Keyword | Meishucun Volcanic ash South China Gondwana Paleo-Tethys Ocean |
| DOI | 10.1016/j.palwor.2022.03.003 |
| Funding Organization | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy |
| WOS Keyword | MAGMATIC FLARE-UP ; CARBON-ISOTOPE ; TUFF LAYER ; ZIRCON AGE ; PB AGES ; CONSTRAINTS ; YANGTZE ; YUNNAN ; GONDWANA ; OCEAN |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[41802029] ; National Natural Science Foundation of China[41921002] ; State Key Laboratory of Palaeobiology and Stratigraphy[203121] |
| Funding Organization | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy ; State Key Laboratory of Palaeobiology and Stratigraphy |
| WOS Research Area | Paleontology |
| WOS Subject | Paleontology |
| WOS ID | WOS:000880139000004 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.iggcas.ac.cn/handle/132A11/107705 |
| Collection | 岩石圈演化国家重点实验室 |
| Corresponding Author | Yang, Chuan |
| Affiliation | 1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China |
| First Author Affilication | State Key Laboratory of Lithospheric Evolution |
| Corresponding Author Affilication | State Key Laboratory of Lithospheric Evolution |
| Recommended Citation GB/T 7714 | Yang, Chuan,Li, Xian-Hua,Zhu, Mao-Yan. Tectonic regime transition of the western South China Block in early Cambrian: Evidence from the Meishucun volcanic ash beds[J]. PALAEOWORLD,2022,31(4):591-599. |
| APA | Yang, Chuan,Li, Xian-Hua,&Zhu, Mao-Yan.(2022).Tectonic regime transition of the western South China Block in early Cambrian: Evidence from the Meishucun volcanic ash beds.PALAEOWORLD,31(4),591-599. |
| MLA | Yang, Chuan,et al."Tectonic regime transition of the western South China Block in early Cambrian: Evidence from the Meishucun volcanic ash beds".PALAEOWORLD 31.4(2022):591-599. |
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