| 皖中拆离滑脱构造与基底缩短机制探讨 |
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| 引用本文： | 朱宗沛,柴明理.皖中拆离滑脱构造与基底缩短机制探讨[J].合肥工业大学学报(自然科学版),1992(1). |
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| 作者姓名： | 朱宗沛 柴明理 |
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| 作者单位： | 合肥工业大学
(朱宗沛)，淮南矿院地质系(柴明理) |
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| 摘 要： | 华北地合皖中复式褶皱与拗陷盆地是中生代陆壳多层次拆离滑脱造山运动之产物。北侧发育推覆、滑覆构造,对接于凤-定山区;南为合肥拗陷。结晶基底断块沿先存铲型伸展断层,作反向继承性仰冲或俯冲,使陆壳加积缩短。本文提出了一个在大陆地块碰撞下,以多层次构造拆离为背景的陆壳缩短模式。
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| 关 键 词： | 多层次拆离滑脱 推覆 滑覆 基底仰冲、俯冲 地壳收缩 |
DETACHMENT STRUCTURES AND MECHANISM OF BASEMENT SHORTENING IN THE MID-ANHUI |
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| Zhu Zhongpei.DETACHMENT STRUCTURES AND MECHANISM OF BASEMENT SHORTENING IN THE MID-ANHUI[J].Journal of Hefei University of Technology(Natural Science),1992(1). |
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| Authors: | Zhu Zhongpei |
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| Abstract: | Hefei basin and the fold area of Huainan and Huaibei as parts of the North China block underwent multi-lager detachment and decoupling of both the cover and the basement during the Mesozoic Orogeny. Thrust and nappe structures developed in sinian though paleozoic strata meet in opposite dicections. The basement is characterized by ductile overlap thrusts or subduction faults and displaced in opposite directions. A model of intra continental basement shortening in the process of continental block collision has been presented in the present paper., |
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| Keywords: | multi-level decoupling and detachment nappe gliding nappes basement obduc-tion basement subduction crustal shortening |
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