| Analyses of Sequence Stratigraphy and Environments across Permian—Triassic Boundary in Liaotian, Northwestern Jiangxi Province |
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| 引用本文： | CaiXiongfei GuYansheng 等.Analyses of Sequence Stratigraphy and Environments across Permian—Triassic Boundary in Liaotian, Northwestern Jiangxi Province[J].中国地质大学学报(英文版),2002,13(2):189-191. |
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| 作者姓名： | CaiXiongfei GuYansheng |
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| 作者单位： | FacultyofEarthSciences,ChinaUniversityofGeosciences,Wuhan430074 |
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| 摘 要： | Based on the study of lithology, sedimentology and paleontology at the Permian-Triassic boundary in Liaotian, Northwestern Jiangxi Province, the sequence stratigraphy and depositional environments across the boundary are reconstructed. The top part of the Upper Permian Changxing Formation is composed of very thick-bedded ligh-colored dolomitic limestone formed in high deposition rate on carbonate ramp,which indacates a transgression systems tract (TST). The Lower Triassic Qinglong Formation shows continuous deposition with the underlying Upper Permian. The lower member of Qinglong Formation consists of calcareous shale, shelly limestome and dolomitic limestone with abundant bivalves (Claraia sp.) and trace fossills (Chondrites). The calcareous shale at the bottom of Lower Triassic indicates a calm deep water environment to form the condensed section (CS). The shelly limestome and dolomitic limeston with shell fossils, intraclast, algal ooide show clean but turbulent environment of carbonate ramp, which produce the deposition of highstand systems tract (TST).
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| 关 键 词： | 地层层序 二叠纪 三叠纪 江西 环境 |
Analyses of Sequence Stratigraphy and Environments across Permian-Triassic Boundary in Liaotian, Northwestern Jiangxi Province |
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| CAI Xiongfei,Gu Yansheng,WANG Dehui,ZHANG Zejun,Chen Bing.Analyses of Sequence Stratigraphy and Environments across Permian-Triassic Boundary in Liaotian, Northwestern Jiangxi Province[J].Journal of China University of Geosciences,2002,13(2):189-191. |
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| Authors: | CAI Xiongfei Gu Yansheng WANG Dehui ZHANG Zejun Chen Bing |
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| Abstract: | Based on the study of lithology, sedimentology and paleontology at the Permian-Triassic boundary in Liaotian, Northwestern Jiangxi Province, the sequence stratigraphy and depositional environments across the boundary are reconstructed. The top part of the Upper Permian Changxing Formation is composed of very thick-bedded light-colored dolomitic limestone formed in high deposition rate on carbonate ramp, which indacates a transgression systems tract (TST). The Lower Triassic Qinglong Formation shows continuous deposition with the underlying Upper Permian. The lower member of Qinglong Formation consists of calcareous shale, shelly limestome and dolomitic limestone with abundant bivalves (Claraia sp. )and trace fossils (Chondrites). The calcareous shale at the bottom of Lower Triassic indicates a calm deep water environment to form the condensed section (CS). The shelly limestome and dolomitic limestone with shell fossils, intraclast, algal ooide show clean but turbulent environment of carbonate ramp, which produce the deposition of highstand systems tract (TST). |
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| Keywords: | sequence stratigraphy deposition environment Permian-Triassic boundary Liaotian Jiangxi Province |
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