气候变化领域集成服务门户(CCPortal): Adamastor

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DOI	10.1016/j.earscirev.2020.103201
	Adamastor – an ocean that never existed?
	Konopásek J.; Cavalcante C.; Fossen H.; Janoušek V.
发表日期	2020
ISSN	0012-8697
卷号	205
英文摘要	Existing models of tectonic evolution of the Neoproterozoic orogenic system rimming the shores of the South Atlantic Ocean (the Araçuaí–Ribeira–Congo and Dom Feliciano–Kaoko–Gariep belts) interpret the belts as subduction-related orogens and emphasize the role of the “Adamastor Ocean” in their pre-collisional evolution. A critical problem in such an interpretation is the confined nature of the northern termination of the orogenic system, as well as a very short time span between the end of rifting and onset of convergence recognized in its southern part. In this contribution, we review the data for the pre- and synorogenic evolution of this system of orogens (here collectively called the South Atlantic Neoproterozoic Orogenic System) and show that the data speak against the presence of a large oceanic domain before the onset of its orogenic evolution. We propose a new and simple intracontinental model, suggesting that Neoproterozoic oceanic crust played only a minor role in the development of the South Atlantic Neoproterozoic Orogenic System and that its overall architecture and thermal evolution is the result of inversion of large-scale rift structures with a protracted, and probably episodic, extensional history. True oceanic crust probably developed only in the southern part of the rift system, but it must have been narrow, akin to the Red Sea–Gulf of Aden stage of the “Adamastor Rift” evolution just before the onset of convergent thickening. © 2020 The Author(s)
英文关键词	Adamastor Rift; Araçuaí–Ribeira–Congo Belt; Dom Feliciano–Kaoko–Gariep Belt; intracontinental orogeny; Neoproterozoic; Rodinia to Gondwana
语种	英语
scopus关键词	crustal structure; orogenic belt; Proterozoic; rifting; subduction; tectonic evolution; Arabian Sea; Atlantic Ocean; Atlantic Ocean (South); Gulf of Aden; Indian Ocean; Red Sea [Indian Ocean]; Adamastor; Ara
来源期刊	EARTH-SCIENCE REVIEWS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/209626
作者单位	Department of Geosciences, UiT – The Arctic University of Norway, Dramsveien 201, Tromsø, 9037, Norway; Czech Geological Survey, Klárov 3, Praha 1, 118 21, Czech Republic; Departamento de Geologia, Universidade Federal do Paraná, Av. Cel. Francisco Heráclito dos Santos, 100, Centro Politécnico, Curitiba, PR 81531-980, Brazil; Museum of Natural History/Department of Earth Science, University of Bergen, Allégaten 41, Bergen, 5007, Norway
推荐引用方式 GB/T 7714	Konopásek J.,Cavalcante C.,Fossen H.,等. Adamastor – an ocean that never existed?[J],2020,205.
APA	Konopásek J.,Cavalcante C.,Fossen H.,&Janoušek V..(2020).Adamastor – an ocean that never existed?.EARTH-SCIENCE REVIEWS,205.
MLA	Konopásek J.,et al."Adamastor – an ocean that never existed?".EARTH-SCIENCE REVIEWS 205(2020).