克拉通盆地不同级次构造—岩相古地理编图思路与实践:以鄂尔多斯盆地早古生代为例  

Mapping ideas and practice of different tectonic-lithofacies paleogeography in craton basin: Early Paleozoic of Ordos Basin as an example

作　　者：牛小兵[1] 李程善[1] 范立勇 肖庆[4] 付斯一 任军锋 张成弓[4] 苏中堂[3,4] Niu Xiaobing;Li Chengshan;Fan Liyong;Xiao Qing;Fu Siyi;Ren Junfeng;Zhang Chenggong;Su Zhongtang(National Engineering Laboratory for Exploration and Development of Low‑Permeability Oil and Gas Fields,Xi'an 710018;Research Institute of Exploration and Development,PetroChina Changqing Oilfield Company,Xi'an710018;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059;Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu 610059)

机构地区：[1]低渗透油气田勘探开发国家工程实验室,西安710018 [2]中国石油长庆油田公司勘探开发研究院,西安710018 [3]成都理工大学,油气藏地质及开发工程国家重点实验室,成都610059 [4]成都理工大学,沉积地质研究院,成都610059

出　　处：《地质科学》2024年第3期603-611,共9页Chinese Journal of Geology(Scientia Geologica Sinica)

基　　金：长庆油田重大专项“鄂尔多斯盆地中元古界-长城系构造沉积演化、成源机制及勘探新领域研究”(编号:ZDZX2021);中国石油天然气集团有限公司科技项目“海相碳酸盐岩油气规模增储上产与勘探开发技术研究”(编号:2023ZZ16YJ01)资助。

摘　　要：构造—沉积分异思想在地球内部构造地质作用与地球表面沉积响应间建立起了有机联系,可划分为不同序次系统,体现了地球系统思维。以该思想为指导编制了鄂尔多斯盆地早古生代构造—岩相古地理图。盆—山系统级次编图主要体现了不同构造—沉积分异作用对古地理面貌的控制,揭示了古地理演化的动力学机制,反映了不同时期地球深部活动在地表系统的响应;隆—坳系统级次编图揭示出海平面波动过程中不同构造单元沉积环境及充填沉积物的差异;凸—凹系统级次编图清晰展现出东部坳陷内古地貌差异引起的沉积环境分异及生、储、盖物质的分布规律与组合关系。不同级次的构造—岩相古地理图更好地解释了古地理面貌“所以然”的原因,更清晰地揭示了油气成藏物质空间分布规律及其控制因素,从而能更有效指导油气勘探实践。The idea of tectonic-sedimentary differentiation establishes an organic relationship between tectonic-geological processes in the earth interior and sedimentary responses on the earth surface,which can be divided into different systems,reflecting the earth system thinking.Under the guidance of this idea,the Early Paleozoic tectonic-lithofacies paleogeographic map of the Ordos Basin is compiled.The basin-mountain system map mainly reflects the control of different tectonic-sedimentary differentiation on paleogeographic features,reveals the dynamic mechanism of paleogeographic evolution,and reflects the response of deep earth activities in different periods to the surface system.The mapping of uplift and depression system reveals the differences of sedimentary environments and filling sediments in different tectonic units during the process of sea level fluctuation.The mapping of convexity-depression system clearly shows the differentiation of sedimentary environment caused by the difference of paleo-geomorphology in the eastern depression,and the distribution and combination of hydrocarbon,reservoir and covered materials.The tectonic-lithofacies paleogeographic maps of different levels can better explain the“why”of the paleogeographic features,and more clearly reveal the spatial distribution of hydrocarbon accumulation materials and their control factors,so as to guide oil and gas exploration practice more effectively.

关 键 词：构造—沉积分异作用 微相 同沉积断裂 怀远运动 马家沟组 

分 类 号：P531[天文地球—古生物学与地层学] P535.2[天文地球—地质学]