Causes of Reticular Cracks in Ordovician Baota Formation Limestone in Southern Shaanxi Province
详细信息
- 责任者：Wang An’dong (School of Geosciences ; China University of Petroleum ; Qingdao 266555 ; China) ; Zhou Yaoqi
- 刊名：Earth Science
- 出版年：2012
- 卷期：37(4)
- 关键词：石灰岩 ; limestone ; 裂隙 ; cracks ; 陕西 ; Shaanxi Province
- 页码：p.843-850
- 图表：4 illus., 33 refs.
- 分类号：0803
- issnNo：ISSN1000-2383
- isbnNo：CN42-1233/P
摘要
Through Paleontology appraisal,outcrop contrast and under mirror slice observation methods, this paper analyzes the causes of reticular cracks of Baota Formation limestone in Ordovician. It is concluded that the Yangtze Plate, Baota period was in a stable craton sedimentary environment, and reticular cracks formed due to limy particles by chemical differentiation and clay mineral syneresis in compressions with shale filling cracks with no-flow periods in a deep water (more than euphotic zone) slow deposition low-energy open platform environment, which indicates that cracks formed because of the non-structural causes.