柴窝铺盆地及其北缘地区中新生代沉积岩源区构造背景和物源属性研究

发布时间：2018-04-23 02:23

本文选题：柴窝铺盆地 + 源区构造背景　；参考：《岩石矿物学杂志》2017年03期

【摘要】：沉积岩中的碎屑组分及主量元素、微量元素和稀土元素可以反映物源信息,广泛应用于沉积源区的确定、构造背景的分析。通过对柴窝铺盆地及北缘地区侏罗纪至古近纪沉积地层的碎屑岩岩石学和地球化学分析,揭示了盆地沉积岩的原岩来自上地壳,岩性以长英质岩石为主,并混合进了部分安山质及基性岩石。源区构造背景为活动大陆边缘,因其原岩是在大陆岛弧环境下形成的,所以部分构造背景显示为大陆岛弧。本次研究不仅可以为柴窝铺盆地及北天山的构造演化过程及其机制提供有力证据,并且对柴窝铺油气勘探具有一定指导意义。
[Abstract]:The detrital components, principal elements, trace elements and rare earth elements in sedimentary rocks can reflect the source information and are widely used in the determination of sedimentary source areas and the analysis of tectonic background. Through the petrology and geochemistry analysis of the Jurassic to Paleogene sedimentary strata in the Chaiwopu basin and the northern margin of the basin, it is revealed that the primary rocks of the sedimentary rocks in the basin come from the upper crust and the lithology is dominated by felsic rocks. And mixed into part of Anshan and basic rock stone. The tectonic setting of the source area is active continental margin, because the original rock is formed in the continental island arc environment, so part of the tectonic background is shown as continental island arc. This study can not only provide strong evidence for tectonic evolution process and mechanism of Chaiwopu basin and northern Tianshan, but also have certain guiding significance for oil and gas exploration in Chaiwopu basin.
【作者单位】：甘肃省油气资源研究重点实验室中国科学院油气研究重点实验室;中国科学院大学;中国石油化工股份有限公司石油勘探开发研究院;
【基金】：国家“973"项目(2012CB214801) 中国科学院西部行动计划项目(KZCX2-XB3-12) 甘肃省重点实验室专项(1309RTSA041) 甘肃省油气资源研究重点实验室基金(135CCJJ20160517)~~
【分类号】：P548;P618.13

【相似文献】