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琼东南盆地西南部反转构造发育机制物理模拟

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徐子英, 孙珍. 琼东南盆地西南部反转构造发育机制物理模拟[J]. 海洋地质前沿, 2015, 31(8): 47-52. doi: 10.16028/j.1009-2722.2015.08007
引用本文: 徐子英, 孙珍. 琼东南盆地西南部反转构造发育机制物理模拟[J]. 海洋地质前沿, 2015, 31(8): 47-52. doi: 10.16028/j.1009-2722.2015.08007
shu
XU Ziying, SUN Zhen. ANALOGUE MODELING OF REVERSED STRUCTURAL DEFORMATION IN THE SOUTHWESTERN QIONGDONGNAN BASIN[J]. Marine Geology Frontiers, 2015, 31(8): 47-52. doi: 10.16028/j.1009-2722.2015.08007
Citation: XU Ziying, SUN Zhen. ANALOGUE MODELING OF REVERSED STRUCTURAL DEFORMATION IN THE SOUTHWESTERN QIONGDONGNAN BASIN[J]. Marine Geology Frontiers, 2015, 31(8): 47-52. doi: 10.16028/j.1009-2722.2015.08007
shu

琼东南盆地西南部反转构造发育机制物理模拟

  • 1 国土资源部海底矿产资源重点实验室, 广州海洋地质调查局, 广州 510075;

  • 2 中国科学院边缘海地质重点实验室, 南海海洋研究所, 广州 510301

  • 基金项目:

    1212011220116)

    1212010611302

    中国地质调查局项目(GZH201400202

    中国科学院边缘海地质重点实验室基金(MSGL12-08)

    国土资源部海底矿产资源重点实验室开放基金(KLMMR-2013-A-10)

详细信息
    作者简介: 徐子英(1981—),女,工程师,主要从事地质构造分析和区域地质调查研究工作.E-mail:ziyingx06@scsio.ac.cn

  • 中图分类号: P736.1

ANALOGUE MODELING OF REVERSED STRUCTURAL DEFORMATION IN THE SOUTHWESTERN QIONGDONGNAN BASIN

  • 1 MLR Key Laboratory of Marine Mineral Resources, Guangzhou Marine Geological Survey, Guangzhou 510075, China;

  • 2 CAS Key Laboratory of Marginal Sea Geology South China Sea Institute of Oceanology, Guangzhou 510301, China

    摘要
  • 为了揭示琼东南盆地西南部反转构造的发育机制,利用物理模拟方法设计了一组实验,基于模拟结果讨论了在软弱地质体与构造应力共同控制下琼东南盆地反转构造的发育特征。实验结果表明,软弱地质体的存在对琼东南盆地西南部的反转构造的发育起着重要控制作用,有软弱体的区域首先发育裂陷和褶皱隆起。由于NW向红河断裂的不断走滑,导致该盆地西北部受压,使得反转褶皱自NW向SE发育。模拟结果与实际构造对比表明,琼东南盆地西南部反转构造发育主要受软弱地质体及NW向红河断裂走滑导致盆地西北受挤压有关,推测该挤压应力来源与印支地块的旋转挤出作用有关。
    In order to investigate the mechanism of reversed structure deformation in the southwestern Qiongdongnan Basin, we carried out an analogue modeling experiment. The influence of weak body and tectonic stress on reversed structure deformation in the Qiongdongnan Basin is discussed upon the basis of the modeling results. The modeling results suggest that the weak body plays an important role in the deformation of reversed structures no matter it is in the extension stage or compression stage, which marks the time when the reversed structural deformation first appears and propagates in weak zone. As the Red River fault in NW-direction slips, the northwestern Qiongdongnan Basin was compressed which led to reversed folding from northwest to southeast. Based on comparison of modeling results with the actual structures, it is concluded that the deformation of the reversed structure in southwestern Qiongdongnan Basin is mainly influenced by the existence of the weak body and the northwestern Qiongdongnan Basin was compressed because of the slipping of NW Red River fault and the compressional tectonic stress which may come from the revolving of the Indochina block.
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出版历程
收稿日期:  2015-06-03

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