| 舟山群岛地区的地质构造背景 |
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| 引用本文： | 汪豫忠.舟山群岛地区的地质构造背景[J].华南地震,1995,15(1):55-61. |
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| 作者姓名： | 汪豫忠 |
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| 作者单位： | 浙江省地震局 |
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| 基金项目： | 浙江省地震局合同制项目 |
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| 摘 要： | 从大地构造、磁场和新构造分区特点等方面，对舟山群岛地区的地质构造背景作了较为详细的论述，指出该区处于基底构造交汇，新构造和地震活动强弱分区的过渡地带，新构造运动在中更新世之后趋于平稳；全新世为间歇性活动，强度较弱，基底由若干微块体组成，块体间为不稳定边界，舟山群岛及其海域深部以东西向、浅表部以北东和北东向构造为主，具有孕震和发震的地质构造背景。
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| 关 键 词： | 新构造运动 地震构造 舟山群岛地区 地震地质 |
ON GEOLOGIC TECTONIC BACKGROUND IN ZHOUSHAN ARCHIPELAGO AREA |
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| Wang Yuzhong.ON GEOLOGIC TECTONIC BACKGROUND IN ZHOUSHAN ARCHIPELAGO AREA[J].South China Journal of Seismology,1995,15(1):55-61. |
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| Authors: | Wang Yuzhong |
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| Abstract: | We made detailed discuss on geologic tetonic background in Zhoushan Archipelago area,according to characteristics of geotetonics, magnetic field and neo-tectonic zoning. The study expressed that this area belonged to the transforming region of the junction of basement structure, neo-tectonic movement and seismic activity zoning; neotectonic movement changed as follows: from the intensity before Mosepleisocene to stable movement and then to intermittent motion in Holocene; basement consisted of micro-masses and the boundary was unstable; in Zhoushan archipelago and vicinity area, the main structure was in WE direction in deep layer and in NNE direction in shallow one; there existed the geologic tectonic background of seismogenic condition. |
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| Keywords: | Neotectonic movement Seismogenic structure the Zhoushan Archipelago area |
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