张健;朱占平;孙雷;王辉;李昌晓;

• 1:中国地质调查局沈阳地质调查中心

• 2:吉林大学地球科学学院

摘要(Abstract)：

松辽盆地外围西部上二叠统林西组主要分布于西拉木伦河断裂以北、贺根山—黑河断裂以南,以及稍北的内蒙古地区。根据野外勘察、实测剖面和岩心观察资料,建立研究区上二叠统林西组沉积亚相岩性组合模式,明确晚二叠世林西组岩相古地理特征。结果表明:研究区上二叠统林西组主要发育湖泊、扇三角洲、河流3种沉积相,以及滨浅湖、半深湖、扇三角洲平原、扇三角洲前缘、辫状河、滨浅海6种沉积亚相,以滨浅湖亚相为主,滨浅海亚相分布局限,在林西县官地剖面顶部出现。松辽盆地西部上二叠统林西组,构成以西拉木伦河与贺根山—黑河断裂为主要控制区的、以南北向物源供给为主的滨浅湖—扇三角洲—河流沉积体系。该结果对松辽盆地外围西部晚古生代油气勘探具有重要意义。

关键词(KeyWords)：古地理特征;岩相;岩性组合模式;林西组;上二叠统;松辽盆地

Abstract:

Keywords:

基金项目(Foundation):中国地质调查局项目(DD20160163);中国地质调查局项目(DD20190097)

作者(Author):张健;朱占平;孙雷;王辉;李昌晓;

Email:

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