End-permian faunas from Yangtze basin and its marginal region: Implications for palaeogeographical and tectonic environments

被引：17

作者：

He, Weihong ^{[1
]}

Zhang, Kexin ^{[1
]}

Wu, Shunbao ^{[2
]}

Feng, Qinglai ^{[2
]}

Yang, Tinglu ^{[2
]}

Yue, Mingliang ^{[2
]}

Xiao, Yifan ^{[2
]}

Wu, Huiting ^{[2
]}

Zhang, Yang ^{[2
]}

Wang, Guangdong ^{[3
]}

Chen, Bing ^{[2
]}

机构：

[1] State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan

[2] School of Earth Sciences, China University of Geosciences, Wuhan

[3] Shandong Rizhao Bureau of Land Resources, Rizhao

来源：

Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2015年 / 40卷 / 02期

关键词：

Biotic assemblages; Palaeogeography; Permian; Radiolarian; Sedimentology; Yangtze Basin and its marginal region;

D O I：

10.3799/dqkx.2015.021

中图分类号：

学科分类号：

摘要：

The Permian-Triassic mass extinction was controlled by the palaeoenvironment evolution. However, the palaeogeographic feature, tectonic setting and biota physiological feature also influenced the biotic evolution and their spatial ranges. To reconstruct the palaeogeographical features of the basin, we conduct research on the latest Permian sedimentary feature, radiolarian palaeobathymetry and biota of northern and southern parts of Yangtze Basin, It is proposed that the water depth increased towards northern margin of the basin in the north part of the Yangtze Basin, facing the northern margin of the Yangtze Basin and opening to the eastern Qinling-Dabie deep sea; whereas the water depth increased towards southern margin of the basin in the south part of the Yangtze Basin, facing the southern margin of the Yangtze Basin and opening to the Paleotethys Ocean. The evolution of organisms and environments of the Yangtze Basin during the Permian was linked to the counterpart in the Paleotethys and is therefore, not a local episode separated from other parts of the world, and rather representative in a regional scale or even in the world. In addition, the water depth in the north part of the Yangtze Basin was shallower than that in the south part. It is also suggested that the collision between the north part of South China Block and the North China Block happened after the End-Permian. The final collision between the Yangtze Block and the Cathay Accreting Block happened at the end of the Permian or even Triassic along the southwestern part, based on that it was deposited in a setting of ocean during the Late Palaeozoic in the area of Qinzhou-Fangcheng and such a setting continued to the End-Permian or even to the Triassic. ©, 2015, China University of Geosciences. All right reserved.

引用

页码：275 / 289

页数：14

共 58 条

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