摘要
中朝准地台中石炭统本溪组可分上、下两段，上段属海陆交互相夹沼泽相沉积，含不稳定的黄铁矿一层；下段则为陆相，其底部奥陶系风化面上分布生物成因的沉积型硫铁矿或山西式铁矿及Ｇ层铝土矿。三矿种间有内在联系，其中，深部的黄铁矿在临近地表处往往变为山西式铁矿。硫铁矿和Ｇ层铝土矿的远景区为山西中南部及河南西北部。
Abstract The Middle Carboniferous Benxi formation in Sino-Korean paraplatform may be distinguished into two members. The upper member, a sequence of continentaloceanic alternative factes sandwished with some marsh sedements, only developed a single, less persistent, pyrite bed. On contrast, in the lower member, particularly on the Ordovician weathering crust of its basical part, biogenic sedimentary pyrite,Shanxi-type iron and G-banxcite deposits occurred at different levels but in such correlative a way as the pyrite deposits tend to covert into the Shanxi-type iron deposits, upon going upwards close to the surface. For prospecting for these ore resources including pyrite and bauxcite,the central-southern part of Shanxi and part of Henan should be taken as prospective target areas.
