Early tectonic evolution of China
Early tectonic evolution of China
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DOI：
10.1016/0301-9268(81)90038-3
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发表时间：
1981-06
影响因子：
3.8
通讯作者：
M. Xingyuan;Wu Zhengwen
中科院分区：
文献类型：
--
作者：
M. Xingyuan;Wu Zhengwen
中国早前寒武纪构造演化至少存在四个构造旋回。它们给大地构造体制带来了深刻的变化，并描绘了不同的演化阶段。它们分别是早元古代的乾县期（3.1- 2.9Ga）和阜平期（2.6- 2.4Ga），以及早元古代的五台期（2.1- 2.0Ga）和吕梁期（1.8- 1.7Ga）。通过以上四个阶段，说明构造作用模式可能随时间而变化，以非均变论的方式发展。地壳演化的每个阶段都有其特定的构造体制，反映了地壳对岩石圈和下地幔物理条件渐变的响应，主要的地壳形成事件发生在侏罗纪末期，形成了以华北和塔里木为中心的大型地壳段。这些原大陆随后在广泛的元古宙改造过程中被破坏，但到早元古宙末，具有次大陆比例的原台地普遍固结，中国大陆地壳的主要构造框架获得了形状。
At least four tectogenetic cycles are recognized in the early Precambrian tectonic evolution of China. They brought profound changes to the tectonic regime and delineate different evolutionary stages. These are the Qianxi-an (3.1–2.9 Ga) and Fuping-ian (2.6-2.4 Ga) in the Archaean; and the Wutai-an (2.1–2.0 Ga) and Luliang-ian (1.8-1.7 Ga) of the early Proterozoic time. It is illustrated through the above four stages that the mode of tectonic processes has probably changed with time, developing in a non-uniformitarian fashion. Each stage of crustal evolution was characterized by specific tectonic regimes that reflect the response of the crust to the gradual changes of the physical conditions in the lithosphere and underlying mantle.Major crustal forming events occurred at the end of the Archaean through which large crustal segments centering around North China and Talimu came into existence. These protocontinents were subsequently disrupted during extensive Proterozoic reworking, but by the end of early Proterozoic time general consolidation of proto-platforms of sub-continental proportions was brought about and the main tectonic framework of Chinese continental crust acquired its shape.