滨北地区嫩江组三、四段，明水组，四方台组和新生代地层中的泥岩有机碳普遍较低，均值仅为0.8～0.9，TOC＞1%的样品均不足总样品的40%。
TOC in the source rocks of the third section and the fourth section of Nenjiang , Mingshui group , Sifangtai group , Cenozoic is lower . The average of TOC is 0.8 % ~ 0.9 % , and the samples of TOC > 1 % are less 40 % .
四方台组