论有机质生烃潜能与生源的关系及干酪根的成因类型

作者对我国若干盆地数百个样品的综合分析表明,（1）藻类等低等水生浮游植物来源的有机质经过一定程度的沉积 成岩氧化可形成贫氢的腐泥型干酪根（Ⅲ型或Ⅳ型）:（2）不仅高等植物的某些特殊生化组分可对富集形成壳质型干酪根,其木质纤维组分办可形成相对富氢的腐植型干酪根;（3）不同类型十酪根中的镜质组分的化学结构明显不同;（4）沉积成岩条件对有机质的活化能和热稳定性具有重要影响

RELATIONSHIP BETWEEN HYDROCARBON POTENTIAL AND BIOLOGICAL ORIGIN OF ORGANIC MATTER AND THE GENETIC TYPES OF KEROGEN

Our detailed studies on hundreds of kerogen samples in several basins in China indi cated; (I) phytoplankton organic matter (OM) cnn form hydrogen 梡oor sapropalic Kerogens (type I / I . type I and even type W ) through early diagenetic oxidations (2) high land-plant OM can form relatively hydrogen-rich, humic kerogens (type I /II or even type I ) under marine conditions probably by sulphate-reducing bactera degradation; (3) vitrinites isolated from different bulk kerogen types are quite different in atomic composi tion and pyrolysis product, confirming that physico-chemical homogenization processes, by which lignocellulosic tissues of high plants can form relatively hydrogen-rich humic kerogens, can take place in diagenesis. (4)sedimentary ?diagenetic conditions exert impor tant influences on the activation energy and thermostability of OM.