Biomarker Assemblages of Resin-Genetic Immature Source Rocks and Their Geological Significance

In view of the exploration cases of immature coal-associated hydrocarbons in the world, it can be seen that resinite and exudatinite are important macerals in Huangxian and Baise brown coals on the basis of a random sampling investigation from twelve Chinese Tertiary coal-bearing basins, and resin-genetlc compounds, i.e. isopimarane, abietane, simonellite, retene, etc., account for 60% and more of total hydrocarbon fractions in the soluble parts of both the brown coals. Owing to the effect of redox environmental factors during sedimentary and diagenetic phases, the aromaticity of resin-genetic compounds is apparently different in both kinds of brown coals, it probably is one of the important reasons why naphthenic base or aromatic base oils have resulted.     

北京地区大气颗粒物中不同功能区多环芳烃的分布特征

用撞击式分级采样器同步采集了北京市城乡结合部、郊区的2003年四个季节的不同粒径大气颗粒物样品,用气相色谱-质谱分析了其中的多环芳烃。两个功能区的PAHs总质量浓度分布趋势均为：冬季>秋季>春季>夏季;不同环数PAHs在不同粒径颗粒物中的分配比例比较显示,粗颗粒物中2 环或3环PAHs的分配比例比其在高环PAHs的比例要大。     

A NOVEL TRICYCLIC TERPANE BIOMARKER SERIES IN THE UPPER PROTEROZOIC BITUMINOUS SANDSTONE, EASTERN YANSHAN REGION

Based on coinjection and/or comparison with synthesized standards, a novel C_(18-23) tricy-clic terpane series with a base peak at m/z 123 on their mass spectra have been detected andconclusively identified from the basal sandstone in the Upper Proterozoic Xiamaling For-mation, eastern Yanshan region, North China, and their molecular structure has been deter-mined as 13α(n- alkyl)- tricyclic terpanes. Dealing with the biomarker assemblage of the reser-voir bitumen, the source input of their organic material, two kinds of degradation effectsand origin of the novel tricyclic terpane series are approached herein.     

燕山东段上元古界含沥青砂岩中一个新三环萜烷系列生物标志物

本文论述了从燕山东段元古界下马岭组底砂岩古油藏储层沥青中,检测出来的一个新发现的C_(18-23)三环萜烷系列(质谱基峰m/z123),经人工合成标样共注和GC—MS分析,确认其结构为13α(正烷基)-三环萜烷,文中结合该储层沥青的生物标志物组合,探讨了其有机母质生源构成、两种降解作用影响,以及新三环萜烷系列的成因。     

树脂生源未成熟烃源岩的生物标志物组合及其地质意义

借鉴国外未成熟煤成烃的勘探经验,本文对我国12个第三系含煤盆地抽样研究结果,发现黄县和百色褐煤中,树脂体和渗出沥青体是重要的有机显微组分;而且其可溶组分中,树脂生源的异海松烷、松香烷、西蒙内莉烯和惹烯等化合物均占褐煤总烃馏份的60％以上,由于沉积和成岩阶段氧化-还原环境因素的影响,两种褐煤的树脂生源化合物芳构化程度明显不同,这可能是导致环烷基或芳香基石油的重要原因之一。