| 造山带与相邻盆地间物质的横向迁移 |
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| 引用本文： | 牛树银,白文吉.造山带与相邻盆地间物质的横向迁移[J].地学前缘,1995,2(1):85-92. |
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| 作者姓名： | 牛树银 白文吉 |
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| 作者单位： | 河北地质学院，中国地质科学院地质研究所 |
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| 基金项目： | 地矿部重点基础地质研究项目、河北地矿局科技发展项目 |
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| 摘 要： | 本文以太行山隆起与相邻华北断陷盆地为例，论述了在大陆岩石圈中造山带与相邻断陷盆地在地球动力学机制上是相辅相成的对立统一体系。当软流圈受力产生波状起伏变形时，在软流圈和上地幔隆起上方，地壳发生减薄并裂陷；软流圈和上地幔拗陷上方，地壳变厚，由脉隆升。造山带遭受物理（化学）风化作用的产物被搬运至相邻断陷盆地，并以逆冲推覆岩片、拆离滑脱构造体系向盆地扩展。断陷盆地的中下地壳物质，则在地幔上隆形成的地幔位势差、密度差和盆地扩张力的共同驱动下，沿向造山带缓倾的拆离滑脱变形带，向山根蠕动流动，以补充因地幔拗陷和山脉隆升造成的重力亏损，从而达到岩石圈四维空间物质的动态调整。
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| 关 键 词： | 地球动力学，隆拗作用，地壳物质横向迁移，盆－岭构造，拆离流变带 |
LATERAL MIGRATION OF THE LITHOSPHERIC MATERIAL BETWEEN OROGENIC ZONES AND ADJACENT BASINS |
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| Niu Shuyin,Sun Aiqun.LATERAL MIGRATION OF THE LITHOSPHERIC MATERIAL BETWEEN OROGENIC ZONES AND ADJACENT BASINS[J].Earth Science Frontiers,1995,2(1):85-92. |
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| Authors: | Niu Shuyin Sun Aiqun |
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| Abstract: | The studies of the Tamangshan tectono─magmatic belt and its adjacent North Chi-na fault basin elucidate that orogenic zonec and their adjacent fault basins in continental litho-sphere, geodynamically, are complementary and opposite to each other. The crust is thinned,fanlted and depressed above the asthenosphere and upper mantle uplift,whill it is thichened andorogenic zones are uplifted where the asthenosp here is stressed and deformed and the uppermantle is depressed.The physical─chemically weathered materials are transported from oro-genic zones into adjacent fault basins in the form of thrust sheets and detached sliding blocks. |
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| Keywords: | geodynamics uplift─depression lateral migration of the lithospheric material tec-tonics of fault besin─orogenic zones detachment creep zones |
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