中国东北地区晚侏罗世聚煤规律研究

中国东北地区晚侏罗世煤盆地有内陆断陷山间(或山前)盆地和滨海山间断坳盆地两种。内陆盆地具同一演化过程;含煤地层中部深水湖泊相的上、下均含有煤层。滨海盆地另具同一发展过程;含煤性与盆地基底结构、海水进退息息相关。

STUDY ON THE REGULAR PATTERN OF LATE JURASSIC COAL ACCUMULATION IN NORTHEAST CHINA

There were two kinds of coal basins of Late Jurassic in Northeast China:inland intermountain(or piedmont)basins and littoral intermountain basins. The inland basins evoluted with the concurrence of faulting, subsiding and sedimentary. The middle part of coal-bearing strata is deep lake facies clay-rock, in enormous thickwhich overlying and underlying strata were two very good coal-bearing ones. The littoral basins developed first with faulting and then with depression. Coal-bearing had close relation with the structures of foundation strata, the inlet and ebb of sea water. The coal-bearing in the west was better than in the east.