青藏高原北部煤系赋存的板块构造控制

青藏高原北部（青南地区）构造背景复杂，从石炭纪至侏罗纪均有煤系沉积，煤炭资源较丰富，板块构造格局是控制其形成和分布的主要因素。系统研究该地区煤系的形成演化和区域构造的关系，有助于揭示青藏高原北部煤系资源赋存的规律，服务煤系资源的综合勘查和评价。通过对青藏高原北部区域构造背景及煤系特征的分析，结合野外地质调查工作，总结了研究区煤系分布在空间和时间上的特征，建立了煤系形成的两大类3级共9种构造-沉积模式，并详述了各模式煤系的特征。据此，以不同成煤时代的煤系为研究对象，进一步分析了其成煤作用与盆地构造演化的关系和各时期成煤盆地的构造演化模式，以及区域构造对煤系的后期改造作用。初步探讨了青藏高原北部区域板块构造对煤系赋存的影响。

Control effect of plate tectonics on coal measures in northern Qinghai-Tibet Plateau

The tectonic settings of Qinghai-Tibet Plateau (Southern Qinghai) are complicated.Its coal measures formed in each epoch from Carboniferous to Jurassic.Plate tectonic framework was the main factor to control the abundant coal resources’formation and distribution.Systematic study on the relationship between coal measures’formation evolution and regional tectonics in this area is helpful to reveal the coal resources occurrence regularity and serve for the coal resources comprehensive exploration and evaluation.By analyzing the regional tectonic setting and coal measures characteristics in Qinghai-Tibet Plateau with filed geological investigations,the distribution features of coal measures were summarized in time and space;nine kinds of tectono-sedimentary patterns of coal measures formation with two categories and three levels were established;and each pattern’s feature was amplified.Based on these,the relationships between coal formation and coal basin tectonic evolution in each epoch were further analyzed,the tectonic evolution pattern in each epoch was proposed,and the late reformation to coal measures by regional tectonics were analyzed.In addition,the influence of regional plate tectonics on coal measures in northern Qinghai-Tibet Plateau were preliminary discussed.