沉积与特提斯地质2017，Vol.37Issue(1)：48-54,7.
四川盆地震旦系灯影组表生岩溶作用研究
Supergene karstification in the Sinian Dengying Formation, Sichuan Basin
摘要
Abstract
The Sinian Dengying Formation strata in the Sichuan Basin are interpreted to be the oldest marine carbonate strata and gas reservoirs in China.In the last geologic periods, the Dengying Formation underwent multiple phases of karstification, of which the supergene karstification have played an important part in the formation of the excellent reservoir rocks in the Formation.Therefore, the emphasis in the present paper is placed on the supergene karstification in the Sinian Dengying Formation on the basis of macroscopic and microscopic features, and multi-parameter experimental analysis of samples from the field outcrops and drilled cores in the Sichuan Basin.The supergene karstification occurs dominantly in three horizons, including the topmost parts of the 4th member and the 2nd member, and lower and middle parts of the 2nd member of the Dengying Formation.The tectonic movements during the Tongwan I and II episodes are believed to be the main controlling factors for the supergene karstification in the topmost parts of the 4th member and 2nd member of the Dengying Formation.The supergene karstification in the lower and middle parts of the 2nd member of the Dengying Formation is mostly constrained by the large-scale sea level changes caused by climatic variations.关键词
四川盆地/震旦系/灯影组/表生岩溶作用Key words
Sichuan Basin/Sinian/Dengying Formation/supergene karstification分类
天文与地球科学引用本文复制引用
郝毅,杨迅,王宇峰,陈薇,谷明峰,厚刚福..四川盆地震旦系灯影组表生岩溶作用研究[J].沉积与特提斯地质,2017,37(1):48-54,7.基金项目
国家科技重大专项"大型油气田及煤层气开发"(2016ZX05004-002) （2016ZX05004-002）
中国石油天然气股份有限公司重大科技专项"深层油气勘探开发关键技术研究" (2014E-32) （2014E-32）
