| 张国文,张梦珂.盆山演化的拱形构造动力模型[J].甘肃地质,2024,(3):1-6 |
| 盆山演化的拱形构造动力模型 |
| Dynamics Model of Arch Structure for Basin-Mountain Evolution |
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| DOI： |
| 中文关键词: 盆山耦合 地球动力学 拱形构造 周向应力 构造运动 |
| 英文关键词:basin-orogen coupling circumferential-direction stress arched structure dynamic model tectonic movement |
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| 摘要点击次数: 4 |
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| 中文摘要: |
| 造山带和盆地的起源以及盆山耦合深部动力学机制一直是地学研究的热点问题。从盆山耦合入手，建立了盆地—山脉—盆地拱形构造模型，在前人研究成果的基础上，进一步分析研究了盆山体系的受力情况。结果表明，在一个盆地—山脉—盆地拱形构造体系中，山脉可以通过拱形构造效应将其巨大的重力转化为侧向挤压力（即周向应力）传导至两侧的盆地，使盆地的压力远远大于山脉腹地。这种拱形构造效应产生的应力差不仅为盆地沉降和山脉隆升提供了统一动力机制，也为盆山演化相伴随的地震和火山活动积累了能量。 |
| 英文摘要: |
| The origins of orogenic belts and basins as well as the mechanism of deep dynamics of basin-mountain coupling have always been the hot issues in geoscientific research. Starting from the basin-mountain coupling, the basin-mountain-basin arch tectonic model was established, and based on the research results of the previous researchers, the stress situation of the basin-mountain system was further analyzed and studied. The results show that in a basin-mountain-basin arch tectonic system, the mountain range can convert its huge gravity into lateral squeezing force （i.e. circumferential stress） through the arch tectonic effect to the basin on both sides, so that the pressure in the basin is much larger than that in the hinterland of the mountain range. The stress difference generated by this arch tectonic effect not only provides a unified power mechanism for basin subsidence and mountain range uplift, but also accumulates energy for the seismic and volcanic activities accompanying basin-mountain evolution. |
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