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Carbon isotopic and element geochemical responses of carbonate rocks and Ordovician sequence stratigraphy in Keping area, Tarim Basin
Pages: 199-205
Year: Issue:  2
Journal: Acta Petrologica et Mineralogica

Keyword:  Keping areaOrdoviciansequence stratigraphyisotopic and element geochemical response;
Abstract: 塔里木盆地柯坪地区奥陶系发育浅水碳酸盐岩台地、深水陆棚盆地两大类沉积体系和局限台地、开阔台地、陆棚和盆地等4种相类型.通过露头剖面的详细观察,在该区识别出局部暴露不整合和淹没不整合两类层序界面,以此为依据将该区奥陶系划分为9个三级层序.通过对层序格架内碳同位素和元素地球化学组成分析表明,不同层序界面及层序内不同体系域的δ~(13)C和元素地球化学组成有明显的差异,并呈现出有规律性变化,反映出该区奥...
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