The Sedimentologic-Geotectonic Evolution in the Jiangsu-Zhejiang-Anhui Region

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摘要 TheYangtzeplate,extendingfromeasttowestinsouthernChina,wasformedabout800Maago.SincetheSinian,twoaulacogenstrendingeast-northeastandconnectedattheeastends,havebeeninitiatedintheJiangsu-Zhejiang-Anhuiregionontheeastmarginoftheplatewithasedimentarysequenceupto10,000minthickness.Atalaterstageofsedimentologicevolution,flyschandmolassewereproduced.TheflysehwasaccumulatedintheLateOrdovician,whenthetwoaulacogensbecamebaysthatopenedtotheeast;theelasticmaterialswerederivedfromtheYangtzeoldlandonthenorthernandsouthernsidesofthebasins.ThemolassewasaccumulatedfromtheterminalLateOrdoviciantotheMiddleOrdovician;theclastiematerialscamefromanupliftedorogenicbeltintheeast.Thisindicatesthatamajorchangeinthetectonicpatternofthebasinshastakenplace.
作者
机构地区 不详
出处 《地质学报:英文版》 1989年2期
出版日期 1989年02月12日(中国期刊网平台首次上网日期,不代表论文的发表时间)