摘要
稔子坪褐煤属于富含壳质组的腐殖型褐煤，腐殖质反射率Ｒ０＝０．４４％，壳质组以壳屑体为主，总烃丰度高达２３７３６×１０￣－６，多项热解参数（Ｔｍａｘ，Ｄ，ＩＨ和Ｐｇ）呈“腐泥型”有机质面貌，富氢组分含量和氢指数Ｉ＿Ｈ都说明该煤属于好的烃源岩。饱和烃馏分生物标志物组合与生源构成相对定量表明，陆生高等植物是主要的烃类生源母质，微生物（细菌）对原始有机母质的改造提高了“腐泥化”程度及生烃潜力，有利于早期生烃。
The brown coal from the Nianziping mine, Guangxi, is referred to the liptinite-rich humic type with R0=0.44%. The liptinite principally consists of liptodetrinite,and the total abundance of hydrocarbon is as high as 23736×10-6. Affinity to 'sapropelic' organic matter is indicated by pyrolytic parameters(Tmax, D,IH and Pg). High proportion of hydrogen-rich component and hydrogen index iH suggest that the brown coal is a favorable hydrocarbon source rock. The biomarker assemblages of the aliphatic fraction and the constituents of source rock imply that terrestrial plants are the main source material for hydrocarbon generation, and the reworking of microbe on primary organic matter enhanced its sapropelitization level and hydrocarbon generation potential, which helped hydrocarbon generation of early stage .
出处
《地球化学》
CAS
CSCD
北大核心
1994年第3期300-308,共9页
Geochimica
基金
国家重点实验室基金
关键词
褐煤
生物标志物
地球化学
饱和烃
brown coal
micro-constituent
biomarker assemblage
hopane
source rock
