2017年3期

黄祥林,陆刚,高杨,凌绍年,吴立河,周娟娟,钟锋运.广西东平锰矿赋矿地层归属及其时代探讨[J].地层学杂志, 2017, 41(3): 284-295.

HUANG Xiang-lin,LU Gang,GAO Yang,LING Shao-nian,WU Li-he,ZHOU Juan-juan,ZHONG Feng-yun.THE AGE AND NATURE OF THE STRATA HOSTING THE DONGPING MANGANESE ORE DEPOSIT IN GUANGXI[J].Journal of Stratigraphy, 2017, 41(3): 284-295.

广西东平锰矿赋矿地层归属及其时代探讨
黄祥林 1 陆刚 1 * 高杨 1 凌绍年 1 吴立河 1 周娟娟 1 钟锋运 2
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+ 作者地址

1广西壮族自治区区域地质调查研究院 广西桂林 541003;

2广西310核地质大队 广西桂林 541213

广西东平锰矿是一个大型红土型锰矿床,分为原生锰矿含矿层和次生锰矿含矿层。由于历史原因,绝大部分学者将原生锰矿含矿层的地层归属浅水台地相的北泗组。区调中,根据矿区实测剖面的岩石组合、沉积相特征及古生物特征与标准剖面的对比,将赋矿地层归属于石炮组,并新建东平层,代表含锰地层。在赋矿地层下部的泥岩层中采获 Claraia sp.等早三叠世双壳类及菊石化石,LA-ICP-MS法测得赋矿地层顶部火山碎屑岩中锆石U-Pb年龄为251.5±2.5 Ma,在火山碎屑岩层之上采获中三叠世双壳类和菊石,确定锰矿赋矿地层的时代为早三叠世中晚期。
语种: 中文   
基金: 中国地质调查局"扬子陆块及周缘地质矿产调查工程"公益性基础地质调查项目(12120113063500)资助。
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