- 责任者：Ma Yanping (Department of Geography and Environmental Science ; Suzhou College ; Suzhou 234000 ; China) ; He Zhenyu
- 刊名：Geology in China
- 出版年：2011
- 卷期：38(3)
- 关键词：石灰岩 ; limestone ; 元素地球化学 ; elements geochemistry ; 安徽 ; Anhui Province
- 页码：p.657-663
- 图表：5 illus., 1 table, 14 refs.
- 分类号：0803
- issnNo：ISSN1000-3657
- isbnNo：CN11-1167/P
mal style="MARGIN: 0cm 0cm 0pt">Qingyun stone of Lingbi County is a type of microcrystalline limestone lying in Sinian Zhangqu Formation, characterized by black color, dense texture and bronze-like sound. Based on a comparison of the petrographic and geochemical features between the Qingyun stone and the common microcrystalline limestone in the study area, the authors hold that the characteristics of the bronze-like sound produced by the Qingyun stone can be attributed to its single mineral assemblage, uniform grain size, dense texture, very small pore size and high organic matter abundance. The Qingyun stone was genetically associated with the global high CO2 concentrations and regional extraordinary geological events in Sinian period, being the combined result of the CaCO3 oversaturated sedimentary environments and the complex geological events.