阿尔金斜坡东段古近纪路乐河组物源体系分析  

Provenance System Analysis of the Lulehe Formation in Paleogene of the East Altun Slope

作　　者：易定红[1] 杨露[1,2] 马峰[1] 马新民[1] 倪祥龙[1] 

机构地区：[1]中国石油石油勘探开发研究院西北分院,甘肃兰州730020 [2]中国石油大学(北京)地球科学学院,北京102249

出　　处：《东华理工大学学报（自然科学版）》2013年第3期302-306,共5页Journal of East China University of Technology(Natural Science)

基　　金：中国石油天然气股份有限公司科学研究与技术开发项目"柴达木盆地油气勘探开发关键技术研究"(编号:07-01z-01-02)资助

摘　　要：通过岩芯观察、砂岩骨架组分、重矿物类型与组合特征、ZTR指数变化趋势等方法,对阿尔金斜坡古近纪路乐河组物源体系进行系统研究并恢复了母岩区性质。结果表明:路乐河组沉积时,阿尔金斜坡东段发育3大物源体系,自西向东依次为①月牙山物源,母岩主要为中性岩浆岩和变质岩,其次为酸性岩浆岩;②红三旱一号物源,母岩主要为中性岩浆岩,其次为酸性岩浆岩和变质岩;③鄂博梁物源,母岩主要为中性岩浆岩和酸性岩浆岩,其次为变质岩。其中红三旱一号物源分为两支,一支经红三旱一号Ⅰ高点主体向西南方向流入尖顶山地区,另一支经牛鼻子梁西口主体向东南方向流入碱山以北地区。Based on the study of the core observation, the sandstone framework component character, the type of the heavy mineral and their assemblages features, ZTR exponent variational trend of the lulehe formation in paleo- gene in the east atlun slope, the provenance system was studied and its rock characters was tried to get back. The results showed that this area developed three provenance systems in the time of the Lulehe formation sedimenta- tion. There are Yueyashan, Hongsanhanyihao and Eboliang sediment provenances from han sedimentary resources mainly come from neutral magmatic rock and Metamorphose, west to east. The Yueyas- secondly come from Acid magmatic rock. The Hongsanhanyihao sedimentary resources mainly come from neutral maginatic rock, secondly come from Acid magmatic rock and Metamorphose. magmatic rock and Acid magmatic rock, secondly The Eboliang sedimentary resources mainly come from neutral come from Metamorphose. The Hongsanhanyihao provenance was divided into two embranchments, one branch mainly flowed southwest into Jiandingshan point, and the other branch mainly flowed southeast into the north of the Jianshan area by th iang area. area by the e west of the first high niubizil-

关 键 词：砂岩骨架组分 重矿物 物源体系 路乐河组 阿尔金斜坡 

分 类 号：P588.2[天文地球—岩石学]