[1]李 阳,李三忠,郭玲莉,等.拆离型微地块: 洋陆转换带和洋中脊变形机制[J].大地构造与成矿学,2018,(优先出版):001-16.[doi:10.16539/j.ddgzyckx.2019.04.011]
 LI Yang,LI Sanzhong,et al.Detachment-derived Micro-blocks: New Insights for the Deformation Mechanism of the Ocean-continent Transition and the Mid-ocean Ridge[J].Geotectonica et Metallogenia,2018,(优先出版):001-16.[doi:10.16539/j.ddgzyckx.2019.04.011]
点击复制

拆离型微地块: 洋陆转换带和洋中脊变形机制
分享到:

《大地构造与成矿学》[ISSN:ISSN 1001-1552/CN:CN 44-1595/P]

卷:
期数:
2018年优先出版
页码:
001-16
栏目:
出版日期:
2019-12-30

文章信息/Info

Title:
Detachment-derived Micro-blocks: New Insights for the Deformation Mechanism of the Ocean-continent Transition and the Mid-ocean Ridge
作者:
李 阳 李三忠 郭玲莉 周在征 索艳慧 王光增 朱俊江 刘一鸣 刘 博 周 洁 李园洁 张国伟
Author(s):
LI Yang1 2 LI Sanzhong1 2 GUO Lingli1 2 ZHOU Zaizheng1 2 SUO Yanhui1 2 WANG Guangzeng1 2 ZHU Junjiang1 2 LIU Yiming1 2 LIU Bo1 2 ZHOU Jie1 2 LI Yuanjie1 2 and ZHANG Guowei1 2 3
关键词:
拆离断层 洋陆转换带 微地块 海洋核杂岩 海底扩张 板块构造
Keywords:
detachment fault ocean-continent transition zone micro-block oceanic core complex seafloor spreading plate tectonics
DOI:
10.16539/j.ddgzyckx.2019.04.011
文献标志码:
A
摘要:
板块构造理论从其诞生起已经统治固体地球科学领域半个世纪, 然而板块构造正面临着巨大的挑战, 如“登陆”、起源以及动力学等问题。微地块构造理论的提出有可能解决板块构造的这三大难题。拆离型微地块是9种微地块中非常重要的类型之一, 在慢速?慢速洋中脊和洋陆转换带中广有分布。围限这类微地块的边界主要是切割岩石圈的拆离断层, 使其脱离母板块而成为独立演化的微地块。因此, 岩石圈尺度的拆离断层也应为除洋中脊之外的第二种离散型边界。根据拆离块体的属性及发育的构造位置, 拆离型微地块可进一步划分为拆离微陆块和拆离微洋块, 分别对应了陆缘和洋内拆离断层作用的结果。研究拆离型微地块形成和演化过程对于丰富和发展板块构造理论具有重要意义。本文结合最新研究进展, 重点综述拆离型微地块的概念、特征、成因机制以及构造意义, 以拓展微地块构造理论内涵。
Abstract:
Plate tectonics theory have already dominated the solid earth science for half one century. However, with the development of earth science it is now facing great challenges, such as: (1) plate tectonics derived from the ocean unable to explain some of the complicated continental tectonics; (2) the questions how and when the plate tectonic regime started through geological time remain unsolved; (3) what is the driving force of the plate tectonics? Nevertheless, these problems can be solved in the Micro-block tectonics theory. On the basis of distinct formation mechanisms, micro-blocks can be divided into at least nine types, i.e. detachment-derived micro-block, rifting-derived micro-block, transform-derived micro-block, propagation-derived micro-block, jumping-derived micro-block, subduction- derived micro-block, accretion-derived micro-block, collision-derived micro-block and delamination-derived micro- mantle block. Detachment-derived micro-block is one of the most widely-developed blocks that can be identified all over the world, especially in the ocean-continent transition zones and the slow-spreading or ultraslow-spreading ridges. The boundary of this type of block is lithospheric-scale detachment fault with corrugated surface, large offset and long-life cycle, leading to the completely separation of the micro-block from its parent plate. Therefore, the lithospheric- scale detachment fault can be regarded as another divergent boundary in addition to the mid-ocean ridge. According to the tectonic setting and nature of the block, detachment-derived micro-block can further be divided into continental and oceanic micro-blocks, corresponding to the detachment faulting in the continental margin and the ocean, respectively. In this contribution, combining the newest progress in the relevant studies we review the concept, characteristics, mechanisms and tectonic implications of the detachment-derived micro-block, aiming to extend the micro-block plate theory and to enhance our better understanding of the plate tectonics.

相似文献/References:

[1]鲁如魁,钟华明,童劲松,等.西藏洛扎地区拆离断层构造变形特征[J].大地构造与成矿学,2005,(29卷02):189.
 LU Rukui,ZHONG Huaming,TONG Jingsong,et al.TECTONIC DEFORMATION FEATURES OF THE DETACHMENT FAULT IN LUOZHA AREA, TIBET[J].Geotectonica et Metallogenia,2005,(优先出版):189.
[2]刘德民,李德威.喜马拉雅造山带中段定结地区拆离断层[J].大地构造与成矿学,2003,(27卷01):037.
 LIU De min and LI De wei.DETACHMENT FAULT IN DINGJIE AREA MIDDLE PART OF HIMALAYA MOUNTAIN BELT[J].Geotectonica et Metallogenia,2003,(优先出版):037.
[3]付伟,周永章,杨志军,等.藏南多层位金锑含矿建造特征及其控矿因素制约[J].大地构造与成矿学,2005,(29卷03):321.
 FU Wei,ZHOU Yongzhang,YANG Zhijun,et al.CHARACTERISTICS OF MULTI-HORIZON ORE-BEARING FORMATIONS IN SOUTHERN TIBET AU-SB METALLOGENIC BELT AND ITS CONTROLLING FACTORS[J].Geotectonica et Metallogenia,2005,(优先出版):321.
[4]高金尉,吴时国,彭学超,等.南海共轭被动大陆边缘洋陆转换带构造特征[J].大地构造与成矿学,2015,(39卷04):555.[doi:10.16539/j.ddgzyckx.2015.04.001]
 GAO Jinwei,WU Shiguo,PENG Xuechao,et al.Structures of Continent-Ocean Transition at the Conjugate Passive Margins of the South China Sea[J].Geotectonica et Metallogenia,2015,(优先出版):555.[doi:10.16539/j.ddgzyckx.2015.04.001]
[5]王余泉,漆家福*,郑荣华,等.饶阳凹陷中部地区古近纪构造变形及控制因素[J].大地构造与成矿学,2018,(42卷04):628.[doi:10.16539/j.ddgzyckx.2018.04.003]
 WANG Yuquan,QI Jiafu*,ZHENG Ronghua,et al.Paleogene Deformation and its Control Mechanism in the Central Part of Raoyang Sag[J].Geotectonica et Metallogenia,2018,(优先出版):628.[doi:10.16539/j.ddgzyckx.2018.04.003]

更新日期/Last Update: 2019-06-24