叠合盆地构造热演化模拟方法研究——以江汉盆地为例  

Research on tectono-thermal evolution modeling method for superimposed basin with the Jianghan Basin as an example

作　　者：赵长煜[1] 宋海斌[2] 钱荣毅[1] 宋洋[2,3] 黄兴辉[2,3] 陈林[2] 田丽花[4] 

机构地区：[1]中国地质大学(北京)地球物理与信息技术学院,北京100083 [2]中国科学院地质与地球物理研究所,中国科学院油气资源研究重点实验室,北京100029 [3]中国科学院研究生院,北京100049 [4]冀东油田勘探开发研究院,唐山063004

出　　处：《地球物理学报》2010年第1期128-137,共10页Chinese Journal of Geophysics

基　　金：中石化海相前瞻性研究项目<中国陆域海相沉积盆地热体制与油气资源潜力>;国家基础研究发展规划项目(2007CB411704)资助

摘　　要：基于地球动力学的构造-热演化方法是沉积盆地热史研究的重要方法之一.本文以江汉盆地宜随大剖面为例,采用平衡剖面方法对叠合盆地复杂、漫长的演化历史进行构造恢复,采用多期有限拉张-挤压应变速率法进行古热流反演,最后得到盆地的古地温场.由此,建立了构造恢复盆地基底热流反演岩石圈尺度温度结构—沉积盆地尺度温度结构的多期伸展、挤压模型的热模拟方法流程,实现了岩石圈尺度的热模拟与盆地尺度的热模拟相结合.Tectono-thermal evolution modeling based on geodynamics methods is an important method for studying sedimentary basin′s thermal history. We restored superimposed basin′s complex and long-time evolution by using balanced cross-section method, and inverted its paleo-heatflow by using multiple-stage finite extensional and compressional strain rate method, with Yisui profile in the Jianghan Basin as an example. Finally, we calculated the paleo-temperature of superimposed basin. Thus, we established a workflow of multiple-stage extensional and compressional modeling, in which tectonic restoration, paleo-heatflow inversion, lithosphere temperature restruction, and sedimentary basin temperature inversion are combined, and sedimentary basin′s thermal evolution are coupled with the lithosphere′s one.

关 键 词：叠合盆地 构造-热演化 应变速率 古热流 古地温场 

分 类 号：P314[天文地球—固体地球物理学]