王文龙^1,2,3,4, 董冬冬^1,2,5,4
1.中国科学院海洋研究所, 山东 青岛 266071;2.中国科学院海洋地质与环境重点实验室, 山东 青岛 266071;3.中国科学院大学, 北京 100049;4.中国科学院海洋大科学研究中心, 山东 青岛 266071;5.青岛海洋科学与技术试点国家实验室海洋地质过程与环境功能实验室, 山东 青岛 266061

摘要:
为了更有效地研究伸展盆地，论述了目前伸展盆地研究中几种常用软件的方法和原理，包括用于盆地反演研究的一维Airy均衡模型、二维挠曲回剥模型、平衡剖面技术以及用于盆地正演研究的挠曲悬臂梁模型和二维粘弹塑性热-力学数值模拟模型。综合分析了这些方法的原理、优势与不足，在此基础上进一步探讨了不同方法之间的综合运用。其中平衡剖面技术恢复得到的盆地剖面可以为裂谷期构造沉降展布范围提供约束，并与挠曲悬臂梁模型结合可以得到盆地演化过程中不同时期上地壳的伸展减薄情况。数值模拟方法则在以上盆地模拟方法得到的结果约束下，模拟伸展盆地的形成过程进而得到初始地质参数与演化过程。综合利用盆地分析的方法可以对盆地演化有更准确的认识并指导油气资源的勘探与开发。
关键词:盆地分析正演反演伸展盆地综合运用
DOI：10.11759/hykx20191125001
分类号:P548
基金项目:国家自然科学基金项目（41476042）；全球变化与海气相互作用项目（GASI-GEOGE-01）；“科学”号高端用户项目（KEXUE2018G10）

The integrated application of structural analysis methods in stretch basins
WANG Wen-long^1,2,3,4, DONG Dong-dong^1,2,5,4
1.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;2.Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;3.University of Chinese Academy of Sciences, Beijing 100049, China;4.Center of Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China;5.Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao 266061, China
Abstract:
In order to study stretch basins more effectively, we have stated methods and principles of main software, which are applied into researches of stretch basins, including forward and inversion methods. Inversion methods include 1D Airy isostasy, 2D flexural isostasy, and balanced cross section technique, and the forward methods include flexural cantilever model and 2D thermal-mechanical model. We have analyzed the advantages and disadvantages of the application of different methods. The length of restored profiles from balanced cross section technique can be horizontal constraints for tectonic subsidence, which changed during syn-rift stage. The integrated application of balanced cross section technique and flexural cantilever model enables us to figure out stretch-state of upper crust at different stages. Numerical simulation method can model the evolution of stretch basins and obtain the initial geological parameter under constrains of the results from software mentioned above. The integrated application of methods in the analysis of stretch basins allows us to have a better understanding of basins' evolution and provides guidance for exploration of oil and gas.
Key words:basin analysisforward methodinversion methodstretch basinsintegrated application





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