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    孔家豪, 张关龙, 许淑梅, 王金铎, 曾治平, 王千军, 任新成, 武向峰, 舒鹏程, 马慧磊, 崔慧琪. 准噶尔盆地侏罗纪车-莫古隆起的发育阶段及其对沉积体系的制约[J]. 中国地质.
    引用本文: 孔家豪, 张关龙, 许淑梅, 王金铎, 曾治平, 王千军, 任新成, 武向峰, 舒鹏程, 马慧磊, 崔慧琪. 准噶尔盆地侏罗纪车-莫古隆起的发育阶段及其对沉积体系的制约[J]. 中国地质.
    KONG Jiahao, ZHANG Guanlong, XU Shumei, WANG jinduo, ZENG Zhiping, WANG Qianjun, REN Xinchen, WU Xiangfeng, SHU Pengcheng, MA Huilei, CUI Huiqi. Development stage of Jurassic Che-Mo Paleouplift in the Junggar Basin and its constraints on sedimentary system[J]. GEOLOGY IN CHINA.
    Citation: KONG Jiahao, ZHANG Guanlong, XU Shumei, WANG jinduo, ZENG Zhiping, WANG Qianjun, REN Xinchen, WU Xiangfeng, SHU Pengcheng, MA Huilei, CUI Huiqi. Development stage of Jurassic Che-Mo Paleouplift in the Junggar Basin and its constraints on sedimentary system[J]. GEOLOGY IN CHINA.

    准噶尔盆地侏罗纪车-莫古隆起的发育阶段及其对沉积体系的制约

    Development stage of Jurassic Che-Mo Paleouplift in the Junggar Basin and its constraints on sedimentary system

    • 摘要:研究目的】准噶尔盆地车-莫同沉积古隆起是影响侏罗系结构样式和储层分布特征的重要地貌单元,研究其发育过程有利于认识准噶尔盆地盆山耦合关系和油气藏的聚集规律。【研究方法】本文基于盆地腹部41口井的测井数据和地震资料,对侏罗系砂体和地层结构进行了详细分析和等时性对比,重点阐述车-莫古隆起阶段性发育与准噶尔盆地周缘造山带,尤其是博格达山的协同演化及这种协同演化对盆地边界和沉积格局等的影响。【研究结果】车-莫古隆起在侏罗纪的演化可划分为初始发育、快速隆升和隆升后剥蚀等三个阶段。早侏罗世车-莫古隆起的初始发育对八道湾组和三工河组展布和结构样式没有影响或影响很小,研究区由西北部扎伊尔山和东北部克拉美丽山供源,主要形成辫状河三角洲沉积体系;中侏罗世为车-莫古隆起的快速隆升阶段,除了西北部扎伊尔山和东北部克拉美丽山供源之外,博格达山也同步隆出水面开始供源,导致盆地边界、地层分布及结构样式的重大转变,使得西山窑组一段、二段大面积超覆、西山窑组三段沉积缺失或遭受剥蚀,沉积体系也随之发生转变,形成辫状河三角洲和滩坝共存的沉积体系组合;中侏罗世晚期和晚侏罗世车-莫古隆起隆升出水面则导致头屯河组和齐古组的剥蚀缺失,形成了与白垩系的区域不整合面。【结论】车-莫古隆起在侏罗纪的形成和演化不仅影响到盆地的沉积地貌,也使盆地边界、物源格局发生重大改变,并导致沉积体系、地层结构样式和分布规律等的显著变化。

       

      Abstract: This paper is the result of oil and gas exploration engineering. ObjectiveChe-Mo Synsedimentary paleouplift in Junggar basin is an important geomorphic unit that affects the structural style and reservoir distribution characteristics of Jurassic. The study of its development process is helpful to understand the basin mountain coupling relationship and the accumulation law of oil and gas reservoirs in Junggar basin. MethodsBased on the logging data and seismic data of 41 wells in the abdomen of the basin, this paper makes a detailed analysis and isochronous comparison of Jurassic sand body and stratigraphic structure, and focuses on the synergistic evolution between the phased development of Che-Mo paleouplift and the orogenic belt around Junggar basin, especially Bogda mountain, and its influence on the basin boundary and sedimentary pattern. ResultsThe evolution of Che-Mo paleouplift can be divided into three stages:initial development stage, rapid uplift stage and post uplift denudation stage. The initial development stage of Early Jurassic Che-Mo paleouplift has no or little influence on the distribution and structural style of Badaowan Formation and Sangonghe formation. The study area is supplied by Zhayier mountain in the northwest and Kelameili mountain in the northeast, mainly forming braided river delta sedimentary system; The Middle Jurassic was the rapid uplift stage of Che-Mo paleouplift. In addition to the source supply of Zhayier mountain in the northwest and Kelameili mountain in the northeast, Bogda mountain also rose out of the water at the same time and began to supply the source, resulting in significant changes in basin boundary, stratigraphic distribution and structural style, resulting in large-area overlap of the first and second members of Xishanyao Formation, loss or denudation of the third members of Xishanyao Formation, The sedimentary system combination of Braided River Delta and beach bar is formed; The uplift of Che-Mo paleouplift in late Middle Jurassic and late Jurassic resulted in the denudation loss of Toutunhe Formation and Qigu formation, forming a regional unconformity with Cretaceous. ConclusionsThe formation and evolution of Che-Mo paleouplift in Jurassic not only affected the sedimentary landform of the basin, but also significantly changed the basin boundary and provenance pattern, and led to significant changes in sedimentary system, stratigraphic structure style and distribution law.

       

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