气候变化领域集成服务门户(CCPortal): Plate Tectonics and the Archean Earth

CCPortal

DOI	10.1146/annurev-earth-081619-052705
	Plate Tectonics and the Archean Earth
	Brown M.; Johnson T.; Gardiner N.J.
发表日期	2020
ISSN	0084-6597
起始页码	291
结束页码	320
卷号	48
英文摘要	If we accept that a critical condition for plate tectonics is the creation and maintenance of a global network of narrow boundaries separating multiple plates, then to argue for plate tectonics during the Archean requires more than a local record of subduction. A case is made for plate tectonics back to the early Paleoproterozoic, when a cycle of breakup and collision led to formation of the supercontinent Columbia, and bimodal metamorphism is registered globally. Before this, less preserved crust and survivorship bias become greater concerns, and the geological record may yield only a lower limit on the emergence of plate tectonics. Higher mantle temperature in the Archean precluded or limited stable subduction, requiring a transition to plate tectonics from another tectonic mode. This transition is recorded by changes in geochemical proxies and interpreted based on numerical modeling. Improved understanding of the secular evolution of temperature and water in the mantle is a key target for future research. Higher mantle temperature in the Archean precluded or limited stable subduction, requiring a transition to plate tectonics from another tectonic mode. Plate tectonics can be demonstrated on Earth since the early Paleoproterozoic (since c. 2.2 Ga), but before the Proterozoic Earth's tectonic mode remains ambiguous. The Mesoarchean to early Paleoproterozoic (3.2-2.3 Ga) represents a period of transition from an early tectonic mode (stagnant or sluggish lid) to plate tectonics. The development of a global network of narrow boundaries separating multiple plates could have been kick-started by plume-induced subduction. © Copyright 2020 by Annual Reviews. All rights reserved.
关键词	Critical condition Geochemical proxies Global networks Mantle temperatures Paleoproterozoic Secular evolution Supercontinents Water in the mantle Tectonics Archean continental breakup continental collision Earth metamorphism plate tectonics Proterozoic subduction zone supercontinent
语种	英语
来源机构	Annual Review of Earth and Planetary Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/131914
推荐引用方式 GB/T 7714	Brown M.,Johnson T.,Gardiner N.J.. Plate Tectonics and the Archean Earth[J]. Annual Review of Earth and Planetary Sciences,2020,48.
APA	Brown M.,Johnson T.,&Gardiner N.J..(2020).Plate Tectonics and the Archean Earth.,48.
MLA	Brown M.,et al."Plate Tectonics and the Archean Earth".48(2020).