地幔流动驱动着东喜马拉雅语法周围的构造突破
Rui Qu1,2, Ye Zhu1,2, Yingfeng Ji3,4
1State Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China.
Scientific reports
|April 26, 2025
概括
印度板的印度板.
科学领域:
- 构造学 构造学 构造学 构造学
- 地质物理学 地质物理学
- 地力学是什么?地力学是什么?
背景情况:
- 板块沉降显著影响东喜马拉雅语法 (EHS) 构造进化.
- 板块接触在空间和时间上的异质性使理解EHS周围的构造学逃脱驱动器变得复杂.
研究的目的:
- 为了研究东喜马拉雅语法的构造进化.
- 用印度沉降的3D模型分析构造逃逸的驱动因素.
主要方法:
- 利用3D数值模型来模拟印度板块超过4000万年的沉降.
- 分析了西藏东部不同深度的粘性流动,基于不同的板前边.
主要成果:
- 印度板块不断向东北缩促进了时针旋转.
- 在EHS中,不同的俯冲角度 (浅的北方,的南方) 对于构造挤出至关重要.
- 一个自下而上的动态机制产生了大量的横向地幔流.
结论:
- 这项研究揭示了一个自下而上的动态机制,驱动着显著的横向地幔流动和向南的物质逃逸 (>1000公里).
- 印度的缩和可变的沉降几何学的相互作用决定了EHS中的构造学逃逸模式.
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