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从1974年到1980年我队对长树山石棉矿区作了不少地质工作,对本区控矿地质条件有了一定认识。以下试图对这些认识作一次归纳和探讨。一、长树山矿区及大西沟矿段的地质概况矿区位于祁吕贺山字形构造东翼的东北向褶皱带内。区内分布着太古界吕梁山群顶部地层,主要为长树山大理岩组。全组厚1400～2100米,依岩性分为四段:第一段(ALch_1)主要为透镜状团块状蛇纹石化透辉透闪石大理岩;第二段(ALch_2)为厚层状自云石大理岩或疙瘩状蛇纹石化大理岩;第三段(ALch_3)为条带条纹状蛇纹石化大理岩;第四段(ALch_4)厚层状白
From 1974 to 1980, our team made a lot of geological work in the Changshu Mountain asbestos mining area, and got a certain understanding of the geological conditions of ore-controlling in this area. The following attempts to make a summary of these understanding and discussion. First, the geological profile of the Changsushishan mining area and the Daxigou ore section The mining area is located in the northeast fold belt in the east wing of the Qilu He Mountain glyph structure. The area is home to the top strata of the Lvliang Group in the Archean, mainly the Daliushu Dali Group. The whole group is 1400 to 2100 meters thick, and is divided into four sections according to lithology. The first section (ALch_1) is mainly lenticular tuffiform tremolite marble; the second section (ALch_2) is thick layer Marbled marble or lumpstone serpentinized marble; the third (ALch_3) striped striped serpentinized marble; the fourth (ALch_4) thick layered white