摘要
安徽贵池地区唐田沉积锰矿床赋存于二叠系孤峰组,包括沉积作用形成的碳酸锰矿和经后期氧化作用形成的氧化锰矿,地球化学特征表现为Mn的强烈富集,尤其是氧化锰矿的富集作用更为明显,而Ca,Mg,Si则大量流失,认为锰矿层及含锰岩系的物源既有陆源,又有海源,其沉积水体较深,结合沉积特征及地史演化分析,自栖霞期发生的海侵在茅口早期达最大,矿区处于深水陆棚相-盆地相沉积环境,发生含锰地层的沉积。
The Tangtian manganese ore deposit lies in Gufeng formation of Permian system in Guichi area, Anhui province including sedimentary carbonatemanganese ore and the oxidized manganese ore. The geochemical characteristic is the high concentration of Mn, and the Ca?Mg?Si loss during oxidation. It is recognized that material source of the Mn ore layers and the Mnbearing stratigraphic units is both terrestrial and oceanic. They were deposited from deep water. Analysis of sedimentary features and geohistory reveals the maximum transgression of Qixia Period and mine district was then in deep shelfbasin sedimentary setting and the Mnbearing rock units were deposited.
出处
《地质找矿论丛》
CAS
CSCD
2002年第4期240-245,共6页
Contributions to Geology and Mineral Resources Research
基金
国土资源大调查项目"安徽贵池地区富锰矿区域资源评价"(编号20001020127003)资助。
关键词
锰矿
孤峰组
地球化学
贵池地区
安徽省
manganese ore
Gufeng formation
geochemistry
Guichi area
Anhui province
