摘要
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 metamorphic Zoning of Longtan Coal Series of Permian in Nantong Mining Area, Eastern Sichuan, has a close relationship to folds, with a low metamorphic rank for anticlines and a high one with sudden changes for synclines. Having specially studied the Nantong Mining Area, the authors recovered the thickness of deposition in different periods and the thermal evolution history of Longtan Coal Series before and after the folding movement by using methods of sedimentary rate ratio and sedimentary tendency. LOM is determined by using Hood’s method and the regularity of metamorphism is reasonably explained.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
1996年第4期38-44,共7页
Journal of China University of Mining & Technology
基金
煤炭部科学基金
关键词
煤系
热演化
煤变质
煤矿床
矿化
Longtan coal series, thermal evolution history, plutonic metamorphism, dynamic metamorphism
