Geochemical Characteristics and Genesis of Grapestone in Sinian Dengying Formation in South-Eastern Sichuan Basin
详细信息
- 责任者：Shi Zejin (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation ; CDUT ; Chengdu 610059 ; China) ; Liang Ping
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(8)
- 关键词：碳酸盐岩 ; carbonate rocks ; 四川 ; Sichuan Province
- 页码：p.2263-2271
- 图表：6 illus., 5 tables, 56 refs.
- 分类号：0803
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
For a long time, there is a dispute about the genesis of the grapestone in Dengying Formation. The geochemical characteristics of grapestone and basement rock are analyzed and compared in detail and the genetic environments of the grapestone are discussed in this paper. It can be corroborated that there was a brief exposure during the deposition of Dengying Formation which made Dengying Formation expose to earth’s face, leached by meteoric water and emerge small-scale karst to create the conditions for the genesis of the grapestone. The brief exposure has very important significance for a better understanding of the genesis of the grapestone and the development of the reservoirs in the middle of Denying Formation.