煤田地质与勘探2016，Vol.44Issue(5)：1-9,9.DOI:10.3969/j.issn.1001-1986.2016.05.001
西北地区盆山构造演化及其控煤作用分析
Basin-range tectonic evolution and its coal-controlling action in Northwest China
摘要
Abstract
The paper discussed emphatically the basin-range tectonic evolution and its coal-controlling action dur-ing Meso-Cenozoic in Northwest China through systematic analysis and comparison of formation integrity, uncon-formity distribution and its type variety, sedimentary formation and on the basis of tectonic sequence division, concluding that, Current tectonic framework of basin-range system in Northwest China was shaped rapidly in mid-late period of Himalayan movement. The Meso-Cenozoic tectonic evolution of Northwest China was con-trolled by multiple northward collisions from the south, the southward increase of formation unconformity and la-cuna was totally the passive responses to the long-range and short-range tectonic compression from the south. The significant difference in scale and shape between “surrounded -type basins” and “sandwiched-type basins” during Indosinion movement has laid the differentiation foundation of spatial distribution and structural deformation of coal resources. Peak coal accumulation took place in the period of convergent evolution of basin-range system in a weak compressional or weak extensional stress field, while extensive basin highly developed. Coal strata deforma-tion which presents centripetally circular differentiation in “surrounded-type basins” and axially banded differen-tiation in “sandwiched-type basins” is dominated by the stress energy decreasing gradually from edge to inside.关键词
西北地区/“围裹型”和“夹板型”盆地/构造演化/控煤作用Key words
Northwest China/“surrounded-type basin” and “sandwiched-type basin”/tectonic evolution/coal-controll-ing action分类
天文与地球科学引用本文复制引用
江涛,刘占勇,程磊,李晖..西北地区盆山构造演化及其控煤作用分析[J].煤田地质与勘探,2016,44(5):1-9,9.基金项目
中国工程院“煤炭资源可持续发展战略研究”(2012-ZD-10-3)；国土资源部“全国煤炭资源潜力评价”(1212011121043)@@@@Reserch on Sustainalbe Development Strategy of China Coal Resources(2012-ZD-10-3)；National Coal Resources Potential Evaluation in China(1212011121043) （2012-ZD-10-3）
