Characteristics of Strontium Isotopes Composition about Permian—Triassic Boundary in the Great Bank of <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:State w:st="on"><st1:place w:st="on">Guizhou</st1:place></st1:State> Province<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>

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Characteristics of Strontium Isotopes Composition about Permian—Triassic Boundary in the Great Bank of Guizhou Province

详细信息

责任者：Xiao Jiafei (State Key Laboratory of Ore Deposit Geochemistry ; Institute of Geochemistry ; Chinese Academy of Science ; Guiyang 550002 ; China) ; Li Rongxi
刊名：Geological Review
出版年：2009
卷期：55(5)
关键词：二叠纪 ; Permian ; 三叠纪 ; Triassic ; 锶—87／锶—86 ; Sr-87／Sr-86 ; 贵州 ; Guizhou Province
页码：p.647-652
图表：2 illus., 1 table, 48 refs.
分类号：1200
issnNo：ISSN0371-5736
isbnNo：CN11-1952/P

摘要

guage: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA" lang=EN-US>The strata about Permian—Triassic boundary are carbonetes continuously developed on the Great Bank of Guizhou in Southen Guizhou Province. The top of the Upper Perimian is massive bioclastic packstone, while the bottom of the Lower Triassic is calcimicrobial framestone and wackestone. The evolution trend of n(⁸⁷Sr)/n(⁸⁶Sr) ratioguage: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA" lang=EN-US>s in the Great Bank of Guizhou, i.e., the Sr-isotope composition has not obvious change from top Permian to bottom Triassic, is different from those (remarkable rise from the Latest Permian to the beginning of the Triassic) in the Yangtze platform and other places of the world, which may be resulted from that the Great Bank of Guizhou, even though being controlled by global events, has a special environmental condition, being less influenced by terrigenous matter, the crustal strontium action on Sr-isotope composition being very weak.

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