|Table of Contents|

Stratigraphic Correlations of Two Different Types of Permian Strata and Their Regional Tectonic Significance in Zhenba-Gaochuan Area, Northern Margin of Yangtze Block(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2011年第02期
Page:
125-131
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
Stratigraphic Correlations of Two Different Types of Permian Strata and Their Regional Tectonic Significance in Zhenba-Gaochuan Area, Northern Margin of Yangtze Block
Author(s):
LI Rui-bao1; 2; PEI Xian-zhi1; 2; LIU Zhan-qing2; LI Zuo-chen1; 2; DING Sa-ping2; CHEN You-xin2; LIU Zhi-gang2; ZHANG Xiao-fei2; CHEN Guo-chao2
1. Key Laboratory of Western Mineral Resources and Geological Engineering of Ministry of Education, Xi'an 710054,Shaanxi, China; 2. School of Earth Sciences and Resources, Chang'an University, Xi'an 710054, Shaanxi, China
Keywords:
northern margin of Yangtze Block;  Permian;  black rock series;  regional structure;  Neopaleozoic;  Zhenba-Gaochuan Area
PACS:
P534.46
DOI:
-
Abstract:
Through 1:50 000 regional geological survey in Zhenba-Gaochuan Area, there were two distinctly types of Permian strata with different rock association and fossils. Permian strata in Zhenba Area mainly consisted of the stable carbonate deposit, Permian strata in Gaochuan Area consisted of black rock series of deeper water facies. Comparing with measured section, fossil and rock association in typical area, the above Permian strata were contemporaneous and heteropic. Based on the regional data, the regional tectonic significances of the Permian strata were discussed. The difference of lithofacies characteristic of the Permian strata indicated that Zhenba and Gaochuan Areas located in absolutely different sedimentary-tectonic environment.The sediment constructions in Zhenba Area characterized as the Micangshan and Xingzishan stratigraphic microprovinces were closely related to the lifting and lowering of Yangze Block and continually marine transgression and regression; the sedimentary constructions in Gaochuan Area characterised as the Chuhe stratigraphic microprovince were possibly related to the crust uplift in Early Paleozoic, crust crack in Late Paleozoic and marine pouring. In general, the similarity of the stratigraphic systems in Gaochuan Area and Mianlue tectonic belt showed that the two stratigraphic systems had the similar tectonic evolution history; the Gaochuan Basin was ever a part of the Neopaleozoic Mianlue rift-limited ocean, and it was replaced to the Gaochuan Area by the late tectonic movement.

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Last Update: 2011-06-20