王海峰,金小赤,刘建波,黄浩,闫振

• 1:中国地质科学院地质研究所
• 2:北京大学地球与空间科学学院

摘要(Abstract)：

滇西昌宁—孟连带沧源县附近糯良—孟来一带发育一套以深色薄层灰岩为主的石炭纪—二叠纪地层。通过研究糯良、龙洞和孟来三条剖面的牙形石生物地层学和沉积地层学,在糯良剖面建立了Sweetognathus whitei带、Neostreptognathodus prayi带和S.guizhouensis带,在龙洞剖面建立了S.guizhouensis-N.pequopensis带。与北美、乌拉尔山南部、保山、华南和日本等地区牙形石带对比,证明本次研究所测糯良剖面和龙洞剖面的地层均为亚丁斯克阶一空谷阶。所测孟来剖面的牙形石Clarkina longicuspidata和C.transcaucasica指示该段地层为吴家坪阶。三条剖面识别出20种碳酸盐岩微相类型,可归为4个微相组合,分别对应浅潮下带、深潮下带上部、深潮下带下部和盆地四种沉积环境。

关键词(KeyWords)： 昌宁—孟连带;二叠系;牙形石;亚丁斯克阶;空谷阶;吴家坪阶;碳酸盐岩

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(41630104);; 中国地质调查局(DD20190008)共同资助

作者(Author): 王海峰,金小赤,刘建波,黄浩,闫振

DOI: 10.19839/j.cnki.dcxzz.2021.0007

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