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伊犁盆地二叠纪沉积相及古地理特征 被引量:2

PERMIAN SEDIMENTARY FACIES AND PALAEOGEOGRAPHY IN ILl BASIN
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摘要 本文通过对伊宁县穷布拉克等6个剖面的分析研究,认为伊犁盆地是一个陆相裂谷型盆地。其堆积物主要为火山岩、碎屑岩、泥岩和灰岩。早二叠世的早期为陆相火山岩喷发期,堆积了厚选3000m的火山碎屑岩。晚二叠世为一断陷淡水湖泊,水下扇发育,湖盆明显由活动期趋向稳定期,为油气的生成与储集提供了有利条件。 Ili Basin is considered as a continental rifting basin in which sedimentary facies contain volcanic rock, elastic rock, mudstone and limestone through an analysis of 6 sections in Qiongblark, lning county. During early pre—Permian,the eruption of continental volcanic rocks resulted in the deposition of 3000 m volcanoclastic rocks. In late Permian, a rifting freshwater lake was formed and underwater fan developed. The active lacustrine sedimentation becomes stable ,which is benificial far hydrocarbon generation and accumulation.
作者 郝继鹏
出处 《新疆石油地质》 CAS CSCD 北大核心 1991年第3期190-197,共8页 Xinjiang Petroleum Geology
关键词 沉积相 伊犁盆地 油气 储集层 continental rifting basin ,sedimentary facies, petrographic palaeogeography, permian.
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  • 1刘宝,曾允孚.岩相古地理基础和工作方法[M]地质出版社,1985.

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