| Citation: |
LANG Xing-hai, TANG Ju-xing, DENG Yu-lin, XIE Fu-wei, YANG Zong-yao, CUI Zhi-wei, WANG Xu-hui, LI Zhi-jun, ZHANG Zhong, ZHANG Jin-shu, HUANG Yong. The First Discovery of Early Carboniferous Gabbro in Xiongcun Area on the Southern Margin of Lhasa Terrane, Tibet: Remnants of Paleo-Tethys Ocean?[J]. Acta Geoscientica Sinica, 2017, (5): 745-753. doi: 10.3975/cagsb.2017.05.14
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The First Discovery of Early Carboniferous Gabbro in Xiongcun Area on the Southern Margin of Lhasa Terrane, Tibet: Remnants of Paleo-Tethys Ocean?
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Abstract
Lhasa terrane is a key area in studying the formation and evolution of Paleo-Tethys and the intra-continental convergence in the Tibetan Plateau. Lots of precious studies have been devoted to the Cenozoic geological evolution process in Lhasa terrane; nevertheless, the study of the Paleozoic evolution remains very insufficient. Focusing on the newly found Early Carboniferous gabbro in Xiongcun area on the southern margin of Lhasa terrane, the authors conducted zircon LA-ICP-MS U-Pb dating for gabbro in Xiongcun area, and investigated its tectonic significance. Zircon LA-ICP-MS U-Pb age of Xiongcun gabbro is (341.55±0.89) Ma, indicating that it was formed in Early Carboniferous epoch. Combining with the regional geological evolution process, the authors consider that Early Carboniferous Xiongcun gabbro might be the remnant of Paleo-Tethys Oceanic crust, and the newly presented dating data would provide significant constraint for studying the evolution process of Lhasa terrane and Paleo-Tethys Ocean.-
Keywords:
- Lhasa terrane /
- Gangdise /
- gabbro /
- Paleo-Tethys Ocean /
- Xiongcun /
- Tibet
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LANG Xing-hai, TANG Ju-xing, DENG Yu-lin, XIE Fu-wei, YANG Zong-yao, CUI Zhi-wei, WANG Xu-hui, LI Zhi-jun, ZHANG Zhong, ZHANG Jin-shu, HUANG Yong. The First Discovery of Early Carboniferous Gabbro in Xiongcun Area on the Southern Margin of Lhasa Terrane, Tibet: Remnants of Paleo-Tethys Ocean?[J]. Acta Geoscientica Sinica, 2017, (5): 745-753. doi: 10.3975/cagsb.2017.05.14
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