NEW IDEAS ON THE COAL-EXPLORATING DIR ECTION IN MULTI-PERIOD COAL-ACUMULATED BASINS
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摘要: 传统的找煤方法不论何期的含煤岩系多以现今保留的盆地边缘为目标,作者通过近年对松辽盆地东缘和长春双阳地区的研究认为:新的找煤战略应广泛开展盆地外围第四系覆盖的、根据零星露头误圈入老地层中的残留煤盆地的寻找,同时注意现今盆地边部向盆地内已尖灭的煤系地层,在盆地的更深部可能存在另一个独立的含煤小盆地。Abstract: The traditional coal-explorating direction mostly took the modern retained basin-margin as the target is spite of the age of this coal-bearing strata. According to the recent research of the east margin of the Songliao Basin and Shuangyang region,Changchun,the authors think that in the new coal-explorating strategy,the residual coal basins,which are overlapped by the Quaternary and wrongly located in the old strata by the sporadic outcrops,should be found widely in the periphery of the basin; meanwhile,care must be taken to the coal-bearing strate pinched from the present basin margin to interior,because an another independent coal-bearing subbasin may be existed in the deeper part of basin.
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