[1]林舸.2005.活化构造的动力学机制研究进展.大地构造与成矿学,29(1):056-62.
 LIN Ge.2005.ADVANCES IN STUDY ON DYNAMICS OF ACTIVATED STRUCTURE.Geotectonica et Metallogenia,29(1):056-62.
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活化构造的动力学机制研究进展
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《大地构造与成矿学》[ISSN:ISSN 1001-1552/CN:CN 44-1595/P]

卷:
期数:
2005年29卷01期
页码:
056-62
栏目:
出版日期:
2005-02-25

文章信息/Info

Title:
ADVANCES IN STUDY ON DYNAMICS OF ACTIVATED STRUCTURE
作者:
林舸
中国科学院广州地球化学研究所 边缘海地质重点实验室,广东 广州 510640
Author(s):
LIN Ge
CAS Key Laboratory of Marginal Sea Geology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, GD 510640, China
关键词:
活化构造理论动力学机制华北陆块华南陆块
Keywords:
activated tectonic theory dynamic mechanics North China block South China block
分类号:
P541
文献标志码:
A
摘要:
活化构造理论的核心是构造活化, 他强调的是陆内活化区造山。活化构造动力学机制是活化构造理论的研究重点。在活化构造理论提出的初期, 就提出了热能聚散交替, 地幔蠕动假说。随着大陆动力学研究的深入, 活化构造动力学机制的研究也获得了较快的发展。运用 “岩石探针”和数值模拟实验, 对中国东部典型构造活化区进行了探讨。华北陆块中新生代构造活化(/岩石圈减薄)的动力学过程, 是源自地幔的热流与伸展应力共同作用的结果,其构造活化(/减薄)过程可以描述为:早期以热侵蚀作用为主,晚期则以机械伸展占主导地位。华南陆块的活化构造动力学机制研究表明,华南陆块的形成与发展,与岩石圈下地幔热能聚集, 导致软流圈上涌的热侵蚀、置换动力机制密切有关。活化构造动力学机制的研究发展, 是对大陆动力学研究的促进。
Abstract:
The kernel ideal of the activated tectonic theory is the structure activization. It emphasizes the intracontinental activization-orogenesis developed in activated regions. The dynamics of the activated structure is the key problem of the activated tectonic theory. From this theory the hypothesis on mantle creep, convergence and divergence of heat energy was derived in the early period. Study on dynamics of activated structure is developing with the study on geodynamics. Research was carried out concerning the dynamics of the typical activated regions in East China with the lithoprobe and numerical modeling. It was found that the thermal perturbation seems to be the predominant mechanism responsible for the significant dynamics of the activated structure (lithosphere thinning) in North China block. The effects of mechanical tectonic extension may become more profound on the dynamics of the activated structure (lithosphere thinning) at a later stage when the lithosphere had already been heterogeneously thinned. The studies on the dynamics of the activated structure in Southern China indicate that the formation and development of South China block were related to the convergence of heat energy in the lithospheric mantel that led to the thermal erosion and the replacement dynamic mechanism. The development in the study on the dynamics of activated structure can promote the study on continental geodynamics.

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备注/Memo

备注/Memo:
收稿日期:20041027基金项目:中国科学院知识创新工程方向性项目(KZCX-113)及前沿领域课题(030513).作者简介:林舸(1948-), 男, 研究员, 博士生导师. 大地构造与成矿学专业. Email: gelin@gig.ac.cn
更新日期/Last Update: 2005-02-15