| 印度与欧亚板块俯冲—碰撞过程岩石圈热结构模拟 |
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| 关键词:thermotectonics numerical simulation Tibetan plateau subduction and collision |
| 基金项目:自然科学青年基金(49902006)，中国地质调查局地调项目(DKD2001005) |
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| Lithospheric Thermotectonic Simulation on the Indian-Eurasian Subduction and Collision |
| In this paper, the authors dealt tentatively with the lithospheric thermotectonic evolution via a numerical analysis of the middle part of Lhasa block from 100 Ma to 40 Ma, and used non linear unsteady advective heat transfer fracture to calculate the thermal sequences of two geological blocks, namely Lhasa block and Ocean plate. During this work, the effects of the subduction angle and the earth material on the production of the friction heat were considered for the first time. An 'upwind' finite element method was employed to simulate the thermotectonics, the calculated results were compared with the observations, and some discussions were made on the possibility and effect of delamination that occurred after collision. The subduction period thermotectonics agree well with the existence of the crust mantle system in granodiorite and its mafic microgranular enclaves from Gangdise batholith. |
| JIANG Wan.2002.Lithospheric Thermotectonic Simulation on the Indian-Eurasian Subduction and Collision[J].Acta Geoscientica Sinica,23(4):301-304. |
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