| 闽粤台沿海北西西向最新构造带与大震构造背景 |
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| 引用本文： | 毕福志,袁又申.闽粤台沿海北西西向最新构造带与大震构造背景[J].地震地质,1990,12(2):183-192,T001. |
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| 作者姓名： | 毕福志 袁又申 |
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| 作者单位： | 国家地震局地壳应力研究所
(毕福志，袁又申)，国家地震局地壳应力研究所(范国胜) |
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| 基金项目： | 国家地震局地震科学基金 |
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| 摘 要： | 闽粤台沿海自台湾运动以来逐渐形成了多条北西西向隆起—拗陷的最新活动构造带,与已知的北东—北北东向隆起、拗陷带构成了区域性镶嵌构造格局。 研究区内除板块相互碰撞、俯冲及上地幔物质上涌形成大震构造背景外,莫霍面隆起或隆起断距大、低速层厚、地壳变薄、近两、三千年地表抬升差异活动显著以及台东近海有北西西向构造活动等,也都是发生大震的重要构造背景
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| 关 键 词： | 闽粤台沿海 北西西向最新构造带 海岸升降 高位海滩岩 大震的构造标志 |
THE LATEST NWW-TRENDING TECTONIC ZONES AND TECTONIC BACKGROUND OF LARGE EARTHQUAKE IN FUJIAN-GUANGDONG-TAIWAN COASTAL AREA |
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| Bi Fu-zhi,Yuan You-shen and Fan Guo-sheng.THE LATEST NWW-TRENDING TECTONIC ZONES AND TECTONIC BACKGROUND OF LARGE EARTHQUAKE IN FUJIAN-GUANGDONG-TAIWAN COASTAL AREA[J].Seismology and Geology,1990,12(2):183-192,T001. |
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| Authors: | Bi Fu-zhi Yuan You-shen and Fan Guo-sheng |
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| Abstract: | The latest active tectonic zones, consisting of several NWW-trending uplifts and denressions. have been formed gradually in Fujian-Guangdong-Taiwan coastal area since Taiwan orogeny. These tectonic zones along with the known NE-NNE-trending uplift-depression zones have constituted a regional mosaic structure framework.In addition to plate collision and subduction, as well as the upwarping of upper mantle materials, the principal features of the region, such as the large amplitude of the fault throw or the upheaval of Moho surface, the great thickness of low velocity layer, crustal thinning, significant differential movement of the earth surface in the last 2, 000 -3,000 years and the NWW-trending tectonic activity in Taidong offshore, also provide important tectonic background for the occurrence of large earthquake. |
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| Keywords: | The latest NWW-trending tectonic zone Fujian-Guangdong-Taiwan coastal area Coastal elevation and subsidence High-level beach rock tectonic indicators of large earthquake |
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