Review on Geological Research of Oceanic Island-Seamount and Its Significance for Reconstruction of Ocean Plate

被引：0
|
作者：
Yuan S. [1 ]
Pan G. [2 ]
Ren F. [2 ]
机构：
[1] Institute of Disaster Prevention, Sanhe
[2] Chengdu Center of China Geological Survey, Chengdu
来源：
Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2020年 / 45卷 / 08期
关键词：
Accretionary orogenesis; Ocean plate geology; Oceanic island-seamount; Oceanic plateau; Subduction-accretionary complex;
D O I：
10.3799/dqkx.2020.124
中图分类号：
学科分类号：
摘要：
The identification of oceanic island-seamount/oceanic plateau has not been attended sufficiently in the regional tectonic analysis of China. In order to study the ocean plate geology of China in depth, the basic concepts, characteristics and accretionary procession of the oceanic island-seamount and ocean floor plateau are reviewed systematically in this paper. Ocean island-seamount/oceanic plateau is an area with abnormal thickness ocean crust formed by hot spot/mantle plume in the process of ocean floor spreading and ocean crust evolution. It is an important part of the oceanic lithosphere. The ocean island-seamount/oceanic plateau has a typical binary structure, with the lower part dominated by mafic and ultramafic rocks, and the upper part composed of carbonate rock formation. According to the principles of comparative tectonics, the existence of the ancient ocean island-seamount indicates the relics of the fossil ocean basin. It is an important carrier to study the orogenic belt. It is considered that there are quite a number of oceanic island-seamounts in the oceanic basin during the geological history. During the subduction-accretion to collision orogeny, the remaining fossil oceanic island-seamounts are sandwiched in the subduction-accretion complex in the form of tectonic slices (blocks), which is one of the important criteria to identify the suture zone, when the ocean closed. © 2020, Editorial Department of Earth Science. All right reserved.
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页码：2826 / 2845
页数：19
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