| 1. | Carboniferous strata , more than 1000m in thick in the area of hexi corridor to bayan haot basin , is the coal measures of transitional phase , in which there are three kinds of hydrocarbon source rocks including dark mudstone , limestone , coal and carbonaceous mudstone
摘要河西走廊至巴彦浩特盆地地区石炭纪地层厚逾千米，是一套海陆交互相含煤岩系，发育暗色泥岩、灰岩、煤层及碳质泥岩等3大类烃源岩。 |
