江苏船山石灰石矿床沉积环境  

Depositional environment of limestone deposit in Chuanshan of Jiangsu

作　　者：李学娣 刘海英[2] 

机构地区：[1]江苏船山矿业股份有限公司,江苏镇江212113 [2]江苏省地质调查研究院,江苏南京210018

出　　处：《地质学刊》2011年第1期22-27,共6页Journal of Geology

摘　　要：根据每组石灰石中都含有大量的海洋沉积窄盐度生物及藻类化石,推断船山矿床为浅海碳酸盐沉积;从每组石灰石的粒度、颜色、结构构造,推断出该矿床在形成过程中有两次大规模海侵,两次沉积中断。沉积环境的变化决定了石灰石的质量,氧化环境里形成的石灰石颜色较浅较纯可作为熔剂,还原环境里形成的石灰石颜色较深,有机质含量高只能作为水泥原料。The different beds of limestone in Chuanshan ore district were of varied sedimentary characters.The authors deduced Chuanshan limestone deposit was shallow sea carbonate deposition based on narrow salinity life-forms and algae fossils of marine deposition existed in each set of limestone;deduced there happened twice large-scale marine ingression and twice depositional intermit in lights of the particle,color,texture and structure.The variation of depositional environment determined the quality of limestone.The limestone formed in oxidized environment showed a shallow color and better purity and could be served as flux,the limestone formed in deoxidized environment showed a dark color and a high content of organic matter and only be served as cement raw material.

关 键 词：石炭纪 二叠纪 石灰石 沉积环境 矿石质量 江苏镇江 

分 类 号：P619.263[天文地球—矿床学] P611[天文地球—地质学]