华蓥山中侏罗统沙溪庙组页岩叶肢介化石分析  

Estheria in the Shale of the Middle Jurassic Shaximiao Formation in Huayingshan

作　　者：周志鸿 朱章雄[1] 杨圳 唐望才 余继 ZHOU Zhi-hong;ZHU Zhang-xiong;YANG Zhen;TANG Wang-cai;YU Ji(Oil and Gas Engineering College,Chongqing Institute of Science and Technology,Chongqing 401331)

机构地区：[1]重庆科技学院石油与天然气工程学院,重庆401331

出　　处：《四川地质学报》2018年第1期34-38,共5页Acta Geologica Sichuan

基　　金：国家自然科学基金No:41572095;重庆科技学院2016大学生科技创新"万千百十"工程项目资助;"川东中侏罗统J2s页岩叶肢介化石分析"(05);项目主持人

摘　　要：华蓥山地区的中侏罗世—晚侏罗世沙溪庙组页岩中有一叶肢介化石富集层"叶肢介页岩"。叶肢介化石一般出现在陆相地层中,由于它数量多、演化快、分布广泛,近年来已成为中国和邻近地区中生代非海相生物地层划分和对比研究的重要手段之一。通过对叶肢介化石形态功能和现代叶肢介生活环境的分析和华蓥山地区叶肢介埋藏情况的研究,对其在中侏罗统的古环境进行了重塑,该文着重论述了叶肢介的演变和古环境的变化以及古环境变化对"叶肢介页岩"形成的影响。The shale of the Middle Jurassic Shaximiao Formation in Huayingshan is rich in Estheria fossils.The Estheria fossils are generally found in continental strata,in recent years it has become an important indicator of non marine Mesozoic stratigraphic correlation in China and neighboring regions because of its large number,rapid evolution and widespread distribution.According to the analysis of shape,habits and occurrence of Estheria,this paper has a discussion on paleogeographic and paleoenvironment in the eastern Sichuan area in the Middle Jurassic.

关 键 词：化石 古环境 中侏罗统 华蓥山 

分 类 号：P534.52[天文地球—古生物学与地层学] P52[天文地球—地质学]