南桐矿区龙潭煤系热演化及煤变质研究

来源 :中国矿业大学学报 | 被引量 : 0次 | 上传用户:aiming5968f
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川东地区二叠系龙潭煤系煤变质分带与褶皱关系密切,背斜部位变质浅,向斜部位变质深,且变化急剧.在对南桐矿区重点研究的基础上,用沉积速率比值法和沉积趋势法恢复了川东地区各时期的沉积厚度以及褶皱运动前后龙潭煤系的热演化史,并用Hood法确定了煤变质阶段,对川东的煤变质规律作出了合理的解释。 The coal metamorphism zonation of the Permian Longtan coal series in the eastern Sichuan is closely related to the fold. The anticlinal parts are metamorphic shallow and the anticlinal parts are denuded deep, and the changes are drastic. On the basis of the key research on Nantong mining area, the depositional thickness ratio and the thermal evolution history of Longtan coal series before and after the fold movement were restored by sedimentation rate ratio method and sedimentary trend method, and the coal metamorphism stage was determined by Hood method , A reasonable explanation of the coal metamorphism in eastern Sichuan was made.
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