藏北羌塘盆地胜利河-长蛇山油页岩带的发现及其意义

Discovery of the Shenglihe -Changsheshan oil shale belt in the Qiangtang basin, northern Tibet, China and its significance

摘要: 最近在北羌塘长蛇山地区新发现了晚侏罗世—早白垩世油页岩及膏盐层，该油页岩与近年来笔者在胜利河地区发现的多处油页岩连成一片，构成了目前中国发现的最大规模的海相油页岩带。详细的野外地质调查与研究表明：该油页岩有机碳含量介于4.31%~16.89%之间，焦油含量为3.5%～16.3%，油页岩有机质大多处于成熟阶段。胜利河-长蛇山油页岩带及与其密切共生的膏盐层的发现，丰富了羌塘盆地烃源岩的类型，为羌塘盆地油气地质条件评价提供了新的依据。

Abstract: Recently, a new oil shale and gypsum salt belt was discovered in the Changshe Mountain area, northern Tibet, china. This belt, combined with previous oil shale belt found in the Shengli River area, represents a large marine oil shale resource in China. Detailed geologic survey and study indicates that oil shales from these areas are characterized by mature organic matters with high organic carbon content (4.31%~16.89%) and moderate tar content (3.5%～16.3%). The discovery of oil shale and gypsum salt belt adds a new hydrocarbon type in the Qiangtang basin as well as proposes new evidences for assessing petroleum geological conditions in this basin.