塔里木盆地晚奥陶世良里塔格型生烃母质生物  

BIOPRECURSORS OF THE LIANGLITAKE TYPE SOURCE ROCKS FROM THE LATE ORDOVICIAN OF TARIM BASIN

作　　者：张宝民[1] 张水昌[1] 尹磊明[2] 边立曾[3] 

机构地区：[1]中国石油天然气集团公司勘探开发研究院,北京100083 [2]中国科学院南京地质古生物研究所,南京210008 [3]南京大学地球科学系,南京210093

出　　处：《微体古生物学报》2005年第3期243-250,共8页Acta Micropalaeontologica Sinica

基　　金：国家重点基础研究发展规划973项目(973G1999043306)。

摘　　要：本文描述塔里木盆地晚奥陶世塔中北斜坡带良里塔格组的生烃生物组合特征。指出缓斜坡背景下与灰泥丘有关的良里塔格组的生烃母质生物先质以混合型母质为特征。其组成主要有底栖宏观藻类、线叶植物、隐孢子、疑源类和几丁虫等。这是一类区别于世界上其它奥陶纪烃源岩Guttenburgen型的一类与灰泥丘有关的烃源岩的生烃母质生物类型。This paper deals with the feature of bio-precursors of hydrocarbon in Lianglitake Formation, Late Ordovician of north-slope of Central Uplift of Tarim Basin. Organic facies study demonstrates that the bio-preeursors of hydrocarbon in Late Ordovieian of north-slope of Central Uplift of Tarim Basin are characterized by mixed type including benthie-maeroalgae, Nematothallus, eryptospores, aeritarehs and ehitinozoans. This character differs from other Ordovician source rocks elsewhere in the world such as Kukersite Kerogen in Estonia and Guttenburgen type source rocks in USA. This kind of source rocks is called Lianglitake type which developed in depression of mud mound complex.

关 键 词：生烃生物 晚奥陶世 良里塔格组 塔里木盆地 新疆 生烃母质 生物 格型 组合特征 宏观藻类 

分 类 号：Q911[天文地球—古生物学与地层学]