【摘要】 <正> 为查明东海DC-2孔岩芯中有机质含量的变化情况,对沉积物中有机碳和沥青总量进行了分析测定。在不同深度和不同层位共取了58个样品,由于样品量受到限制,分析沥青的样品重量由250—700克不等。 沉积物的粒度在整个岩芯中变化比较明显,由下而上可分为五个大层。 1.粉砂层(91.5—75.5米):粉砂粒级含更多还原

【Abstract】 Analysis of organic matter in sediment core DC-2 drilled in the East China Sea shows that.1. The contents of organic matter and the amount of dissoluble organic matter are-related with grain size.2 . The colour of bitumen can reflect the degree of evolution of organic matter.3 . Sedimentary environment is indicated by the variation of contents of organic matter,4 . Scattered organic matter can not generate petroleum.更多还原