| 豫西中新生代地球动力学探讨 |
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| 引用本文： | 司马献章.豫西中新生代地球动力学探讨[J].河南国土资源,1998(3). |
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| 作者姓名： | 司马献章 |
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| 作者单位： | 河南省地矿厅地调一队 |
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| 摘 要： | 以隆断区和断陷盆地地壳厚度的显著差异，隆断区与盆地分界的深大断裂（边缘断裂，与地幔斜坡对应），隆断区和盆地的岩浆作用及现代地热活动，盆地沉降历史四个地质特征为依据，作者认为本区盆岭构造形成的动力学机制是：中新生代上地幔起伏和下地壳不均匀岩浆熔融并由此产生的岩浆作用和热能、重力地质作用等引起的物质膨胀和岩浆侧向上侵入、岩浆冷凝和体积收缩导致同沉积断层运动，形成本区盆岭构造。
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| 关 键 词： | 地球动力学，隆断区和盆地，地壳厚度，地幔坡，岩浆活动，豫西 |
THE APPROACH OF MESOZOIC-CENOZOIC GEODYNAMICS IN THE WESTERN HENAN |
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| Sima Xianzhang.THE APPROACH OF MESOZOIC-CENOZOIC GEODYNAMICS IN THE WESTERN HENAN[J].Henan Land & Resources,1998(3). |
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| Authors: | Sima Xianzhang |
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| Abstract: | The area is situated in the southern margin of North China platform.On the basis of the outstanding difference of crustal thickness between the lifted block region and fault basin,the deep fault(marginal fault)having as the boundary of lifted block region and basin corresponding to the mantle slope,the magmatism of lifted block region and basin as well as the existing geothermal activity,and subsided history of the fault basin,the author has considered that the geodynamic mechanism of forming the basin-range structure to be the magmatism,thermal energy and gravitational geologic effort produced by the rolling of upper mantle and nonuniform melting of lower crustal magma in Mesozoic Cenozoic era caused the material expansion,lateral intrusion and chill of magma as well as volume contraction.These lead to the movement of synsedimentary fault and formed the basin-range structure of this region. |
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| Keywords: | geodynamics lifted block region and basin crustal thickness mantle slope magmatic activity the western Henan |
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