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在法国莱茵地区Schiefergebirge的西部,对Aashen地方古生代地层的黑色页岩与碳酸盐岩作了地球化学研究.对沉积岩中原生或次生金属的分布使用荧光X射线法,在河川沉积物方面使用了原子吸光法.上部泥盆系Frasinian黑色页岩与球粒状石灰岩呈不规则沉降隆起的大陆架上,出现了像海隆或盆地那样地形上的障碍条件,沉积物在这种条件之下对硫化物的矿化作用最为有利,因此Zn与Cu极为富集.下部古生代地层(寒武系)中的
In the western Schiefergebirge, in the French Rhine region, the geochemistry of the black shale and carbonate rocks of the Paleozoic strata in the Aashen region has been geochemically studied using the fluorescent X-ray method for the distribution of primary and secondary metals in sedimentary rocks and for river sediments Atomic absorption spectroscopy shows that the Upper Devonian black shale and spheroidal limestone are irregularly uplifted on the continental shelf, and there are some terrain obstructions such as seamounts or basins. Under this condition, The mineralization is the most favorable, so Zn and Cu are extremely enriched in the Lower Paleozoic strata (Cambrian)