贵州晴隆地区龙潭组沉积环境与富有机质页岩展布特征

第２７卷增刊２

２０１８年１０月中 国 矿 业CHINA MINING MAGAZINE Vol ．２７，Suppl ２

Oct ． ２０１８

收稿日期：２０１８-０７-１１ 责任编辑：刘硕

基金项目：“十三五”重大专项０５专项项目３４课题０１“不同类型页岩气生成机理与富集规律研究”资助（编号：２０１６ZX ０５０３４００１）；中国地质调查局地质调查项目“滇黔桂上古生界页岩气战略选区调查”资助（编号：DD ２０１６０１９６）；中国地质调查局地质调查项目“滇黔桂地区上古生界海相页岩气基础地质调查”资助（编号：DD ２０１６０１７８）

第一作者简介：陈榕（１９８７－），女，博士，主要从事沉积相研究及页岩气勘查工作，E -mail ：chenrong ＠mail ．cgs ．g ov ．

cn 。引用格式：陈榕，张子亚，贺敬博．贵州晴隆地区龙潭组沉积环境与富有机质页岩展布特征［J ］．中国矿业，２０１８，２７（S ２）：６６-６９．doi ：１０．１２０７５／j ．issn ．１００４-４０５１．２０１８．S ２．００５ 地质找矿

贵州晴隆地区龙潭组沉积环境与

富有机质页岩展布特征

陈 榕１，张子亚１，贺敬博２

（１．中国地质调查局油气资源调查中心，北京１０００８３；

２．自然资源部，北京１０００３４）

摘 要：本文在野外剖面测量、老井复查的基础上，研究了晴隆地区龙潭组沉积环境，划分了黔西晴

隆地区上二叠统龙潭组层序，绘制了晴隆地区龙潭组的连井剖面图和沉积相图。在晚二叠世龙潭组沉积

期间，晴隆地区以机械-化学沉积为主，沉积体系为碳酸盐缓坡-平台-陆棚-斜坡-深水盆地。在龙潭组早期，

主要沉积物为泥质沉积物和生物沉积物，主要沉积环境为三角洲前缘和前三角洲，深水沉积位于晴隆县北

部。龙潭组中期，沙质沉积占主导，泥质沉积位于晴隆-兴仁一带。龙潭组晚期，晴隆地区以泥质和生物沉

积为主，台地环境进一步扩大，富有机质页岩分布面积减少。晴隆地区有机质丰富的页岩分布广泛，其中

晴隆北部和兴义地区龙潭组有机质页岩厚度较大。

关键词：上二叠系；龙潭组；沉积环境；富有机质页岩

中图分类号：P ６１８.１３ 文献标识码：A 文章编号：１００４-４０５１（２０１８）S ２-００６６-０４

Sedimentary environment and distribution characteristics of organic -rich shale in the Longtan formation in Qinglong area ，Guizhou

CHEN Rong １，ZHANG Ziya １，HE Jingbo ２（１．Oil and Gas Survey ，China Geological Survey ，Beijing １０００８３，China ；

２．Ministry of Natural Resources ，Beijing １０００３４，China ）

Abstract ：Based on the study of field and well data ，the sequence of the upper permian Longtan

formation in the Qinglong area of western Guizhou were divided ，and the well profile and sedimentary facies maps of Longtan formation in the Qinglong area were depicted ．During the deposition of the late permian Longtan formation ，the Qinglong area was dominated by mechanical -chemical deposition ，and the sedimentary system was carbonate mild -sloped platform -land shed -slope -deepwater basin ．In the early period

of the Longtan formation ，the dominate sediment was argillaceous deposits and biosediments ．The main depositional environments were delta front and pre -delta ，and the deep -water sediments were located in the

northern Qinglong area ．In the middle period of the Longtan formation ，the main sediments was sandy sediments ，and the muddy sediments are located in the Qinglong -Xingren area ．In the late period of the

Longtan formation ，the Qinglong area was dominated by argillaceous deposits and biosediments ．The p latform phase was further expanded and the area of organic -rich shale reduced ．

The organic -rich shale in the Qinglong area is wide distributed ．The thickness of the organic -rich shale in the Longtan formation in the 万方数据