羌塘盆地中侏罗统古气候演化及其所指示的潜在聚煤古环境

The Paleoclimatic Evolution of Middle Jurassic and the Potential Coalescence Paleoenvironment in Qiangtang Basin

由于自然资源恶劣、交通不便,致使西藏煤炭勘查工作基础较为薄弱,因此西藏是我国煤炭资源较为紧缺的省区之一。羌塘盆地是西藏成煤条件最好的区域,然而目前对羌塘盆地侏罗纪聚煤环境的研究相对较少,文章以羌塘盆地雁石坪剖面为研究对象,通过古植物化石、孢粉以及岩性演化过程所揭示的古气候演化记录,来分析中侏罗世羌塘盆地潜在的聚煤古环境。研究认为,中侏罗世羌塘盆地以热-湿型气候为主,本气候类型致使羌塘盆地具有良好的聚煤古气候条件。

Due to the poor natural resources and poor transportation,Tibet is one of the provinces in which coal resources are scarce.Qiangtang basin is the best of the coal-forming conditions in Tibet area,however,the study of Qiangtang basin in Jurassic coal accumulating environment is relatively small,wild goose Shiping articles in Qiangtang basin section as the research object,through the ancient plant fossils and sporopollen and lithologic evolution reveals the paleoclimate evolution of records,to the analysis of middle Jurassic in Qiangtang basin,the potential coal accumulating environment. According to the research,the Qiangtang basin is dominated by the thermal-wet-type climate,which makes the qiangtang basin have a good coal paleoclimate.