GEOCHEMICAL CHARACTERISTICS OF BROWN COAL FROM NIANZIPING MINE,QINZHOU,GUANGXI——BIOMARKER ASSEMBLAGES OF AROMATIC FRACTION

Zeng Fangang; Wang Tieguan; Wu Chaodong

doi:10.11743/ogg20000207

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GEOCHEMICAL CHARACTERISTICS OF BROWN COAL FROM NIANZIPING MINE,QINZHOU,GUANGXI——BIOMARKER ASSEMBLAGES OF AROMATIC FRACTION
Vol. 21, Issue 2, Pages: 123-126(2000)
Online First：25 June 2000，

Published：2000
DOI： 10.11743/ogg20000207
稿件说明：

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DOI：

Zeng Fangang, Wang Tieguan, Wu Chaodong. GEOCHEMICAL CHARACTERISTICS OF BROWN COAL FROM NIANZIPING MINE,QINZHOU,GUANGXI——BIOMARKER ASSEMBLAGES OF AROMATIC FRACTION[J]. 2000, 21(2): 123-126. DOI： 10.11743/ogg20000207.

摘要

广西钦州稔子坪矿褐煤的芳烃馏分中

普遍存在芳香倍半萜类、二倍半萜类、芳香三萜类及苯并藿烷等标志化合物。其饱芳比为0.29

芳香萜类占芳烃馏分总量的80.7

以芳香倍半萜类和陆源芳香三萜类为主

芳香二萜类含量甚微。该褐煤富含五环三萜类及倍半萜

表明其生源构成以双子叶被子植物及裸子植物为主。成岩早期

细菌活动相当强烈。高等植物经细菌作用改造后

陆源三萜类易芳构化形成脱A-三萜烷和双芳-8

14-断三萜类

从而使陆源高等植物的“腐泥化”程度增加

并可能成为低熟油的良好烃源岩。

Abstract

The polycyclic aromatic fraction of the Tertiary brown coal from Guangxi Nianziping Mine are composed mainly of aromatic hydrocarbons(aromatizing-de-a-triterpane and diaromatic-8

14-seco-triterpane)produced from higher plants and bacterial remaking higher plants.The hydrocarbon contribution produced from microbe and microbial remaking higher plants are outstanding

though higher plants are the main hydrocarbon source.This kind of intensively microbial propagated brown coal is a kind of good source that can produce immature oil and gas

thus

attention should be paid to the above mentioned oil and gas exploration of the coal measures.