沉积地球化学在准东石炭系沉积环境分析中的应用  

Application of Sedimentary Geochemistry to the Late Carboniferous Sedimentary Environment Analysis in Eastern Junggar Basin

作　　者：王鹏[1] 严小鳙[2] 谭开俊[3] 

机构地区：[1]延长石油(集团)有限责任公司研究院,陕西西安710075 [2]中国石油大学(北京)地球科学学院,北京102249 [3]中国石油勘探开发研究院西北分院,甘肃兰州730020

出　　处：《延安大学学报（自然科学版）》2013年第2期70-73,共4页Journal of Yan'an University：Natural Science Edition

摘　　要：运用沉积地质特征和沉积地化特征的综合手段对准噶尔盆地东部晚石炭世沉积环境进行分析,认为研究区西部的东道海子凹陷和阜康凹陷为近海的咸化湖沉积,烃源岩主要发育暗色泥岩、沉凝灰岩、泥质灰岩;南部的三台凸起、吉木萨尔凹陷和博格达山前带主要为滨浅海和泻湖沼泽环境,烃源岩主要发育暗色泥岩、沉凝灰岩、灰岩;北部的石钱滩凹陷和五彩湾凹陷主要以海陆过渡相泻湖沼泽沉积为主;中部地区主要河流和陆内湖泊为主,烃源岩主要发育暗色泥岩、炭质泥岩、煤等。Because the Characteristic of sedimentary environment strongly influenced the distribution of Late Carbon- iferous source rock in Eastern Junggar basin. Based on a comprehensive analysis of the Characteristics of sedimen- tary geology and sedimentary geochemistry, trace elements, we addressed the Late Carboniferous sedimentary envi- ronment in eastern Junggar basin. The sedimentary environment of Dongdaohaizai sag and Fukang sag is maritime brackish lake, the source rock is dark mud, sedimentary tuff and argilliferous limestone in western study area. The sedimentary environment of Santai swell, Jimusaer sag and Bogda mountain front is shallow sea, lagoon and swamp, the source rock is dark mud and limestone in south study area. The sedimentary environment of Shiqiantan sag and Wueaiwan sag mianly is transitional lagoon and swamp in north study area. The sedimentary environment of central section is river and lake, their source rock is dark mud, carbonaceous mud and coal.

关 键 词：沉积地质 沉积地球化学 元素地球化学 沉积环境 

分 类 号：TE121.34[石油与天然气工程—油气勘探]