Precambrian metamorphic basement and sedimentary cover of the North China Craton: A review
Precambrian metamorphic basement and sedimentary cover of the North China Craton: A review
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DOI：
10.1016/j.precamres.2007.04.017
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发表时间：
2008-01
影响因子：
3.8
通讯作者：
Songnian Lu;Guochun Zhao;Huichu Wang;Guo Hao
中科院分区：
文献类型：
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作者：
Songnian Lu;Guochun Zhao;Huichu Wang;Guo Hao
华北盆地是中国三大盆地（即华北盆地、华南盆地和塔里木盆地）中最大、最古老的盆地。它由太古代和古元古代变质基底和上覆的中元古代未变质沉积盖层组成。最近提出的华北造山带演化模型设想了分离的东西地块，它们在太古代独立发展，并在古元古代碰撞事件（通常称为吕梁造山运动）中沿横贯华北的造山带沿着碰撞。吕梁期造山运动是华北陆块前寒武纪演化中最重要的事件之一，被认为是导致古-中元古代哥伦比亚超大陆形成的全球规模的2.0-1.8Ga碰撞事件的一部分。华北陆块在1.85Ga的最后一次合并作用后，在陆块内部或陆块边缘沉积了大量厚层的碎屑岩和碳酸盐岩。此外，华北板块在1.8 ~ 1.6Ga之间发生了一系列裂谷事件，可能与超大陆哥伦比亚的扩张有关。该克拉通的中-寒武纪地层以富含叠层石的平台状碳酸盐岩为主，而华北克拉通在新元古代不发育类似于扬子江南沱冰碛岩的冰川沉积。华北陆盆也没有经历过像塔里木和扬子陆盆那样广泛的新元古代热构造事件，表明华北陆盆在Rodinia超大陆的组装和裂解过程中没有参与同样的构造过程。
The North China Craton is the largest and oldest of the three cratons in China (i.e. North China, South China and Tarim Cratons). It consists of an Archean and Paleoproterozoic metamorphic basement and overlying Mesoproterozoic unmetamorphosed sedimentary cover. A recently proposed model for the evolution of the North China Craton envisages discrete Eastern and Western Blocks that developed independently during the Archean and collided along the Trans-North China Orogen during a Paleoproterozoic collisional event, conventionally named the Lüliangian Orogeny. The Lüliangian Orogeny is one of the most important events in the Precambrian evolution of the North China Craton and is considered to be part of the global-scale 2.0–1.8Ga collisional events that led to the assembly of a Paleo-Mesoproterozoic Columbia supercontinent. Voluminous and thick-layered clastic rocks and carbonates were deposited in the interior or on the margins of the North China Craton following its final amalgamation at ∼1.85Ga. In addition, a series of rifting events took place in the North China Craton between 1.8 and 1.6Ga, which may have been related to the dispersal of the supercontinent Columbia. Platformal carbonates with abundant stromatolites are predominant in the Mesoproterozoic to Cambrian strata of the craton, but no glacial deposits similar to the Nantuo Tillite of the Yangtze Craton were developed in the North China Craton in the Neoproterozoic. The North China Craton also did not undergo extensive Neoproterozoic thermo-tectonic events as those in the Tarim and Yangtze Cratons, suggesting that the North China Craton was not involved in the same tectonic processes during the assembly and break-up of the Rodinia supercontinent.