| 太平洋环圈构造及其力学模式 |
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| 引用本文： | 郑开鄂,水涛.太平洋环圈构造及其力学模式[J].地球科学,1985(2). |
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| 作者姓名： | 郑开鄂 水涛 |
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| 作者单位： | 浙江省地质科学研究所
(郑开鄂)，浙江省地质科学研究所(水涛) |
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| 摘 要： | 在太平洋底存在一个以环状洋脊、海沟及辐射状断裂组成的蜘网状断裂网。通过弹性理论应力场分析及模型实验,探讨了该断裂网形成的动力学机制,建立起以中西太平洋达尔文隆起为中心的太平洋环圈构造体系。所谓转换断层、海沟,其前身应分别属于辐射状和环状张断裂系,只在太平洋扩张洋中脊形成之后,才由张性分别转化为剪性和压(剪)性;所谓大平洋的各大小板块则是蜘网状断块构造的离散体。
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| 关 键 词： | 太平洋 环圈构造 力学分析 转换断层 洋脊 海沟 |
RING STRUCTURE OF THE PACIFIC OCEAN AND ITS MECHANICAL MODEL |
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| Zheng Kai'e Shui Tao.RING STRUCTURE OF THE PACIFIC OCEAN AND ITS MECHANICAL MODEL[J].Earth Science-Journal of China University of Geosciences,1985(2). |
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| Authors: | Zheng Kai'e Shui Tao |
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| Institution: | Geological Institute of Zhejiang |
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| Abstract: | In this paper the authors consider that there is a global scale web-fracture system consisting of ring ridges, trenches and radial transform faults at the bottom of the Pacific ocean, discuss the dynamic mechanism of fault nets on the basis of results of elastic theory and of model experimant, and have established the ring structure system of the Pacific ocean with the Darwin's mid-oceanic rise in the middle west Pacific as its centre. As for transform faults and trenches, they are not the fixed shearing and compressing structure, but a part of the radial and ring tension structure in the web-fracture system . After forming spreading ridges of the east Pacific, they were transformed into shearing and compressing structures. The plates of the Pacific are discrete bodies coming from the web-form structure system. |
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| Keywords: | the Pacific ringshaped structure mechanical analysis transform fault ridge trench |
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