摘要
黄梅县三叠纪蒲圻组石膏矿为大型矿床规模, 具较大的经济价值.矿体赋存于三叠系中统蒲圻组地层中, 隐伏于蒲圻组上段红色岩层之下.在含膏岩系中圈定有三个主矿体, 呈层状产出, 平面走向北东, 剖面倾向南东, 厚度、 品位变化均匀, 矿石以硬石膏为主, 少量石膏.根据相关资料, 认为扬子板块在三叠纪期间向北漂移, 并与亚洲板块碰撞抬升, 造成陆表海向亚热带潮坪-泻湖环境转变, 是该区石膏矿床形成的重要原因, 中三叠世地层及其顶、 底板红色碎屑岩组合是该矿床的找矿标志.
The xiaxin gypsum-anhydrite deposit from Huangmei County in Hubei province as a large-scale ore de- posit, reserved in puqi-formation of Middle Triassic Period, occurred as stratified and with grade and thickness uni- fomlity, which has considerably economic value. The investigation shows that drafting of Yangtze plate in Low-Mid Triassic System creates much favorable conditions for the fomlation and preservation of gypsum- anhydrite deposit when the Yangtze Block moved over from around the equator to surround the tropic of cancer collided with Asian Block, rose and changed into tidal flat lagoon under an acid- hot climate.
作者
黄佳琪
曹文锋
王登
HUANG Jiaqi;CAO Wenfeng;WANG Deng(Fourth Geological Team of Hubei Geological Bureau,Xianning Hubei 437100;Hubei Geological Survey,Wuhan Hubei 430034)
出处
《河南科技》
2018年第25期76-78,共3页
Henan Science and Technology
关键词
石膏
地质特征
三叠纪
gypsum
geological characteristics
triassic system
