气候变化领域集成服务门户(CCPortal): Baltica (East European Craton) and Atlantica (Amazonian and West African Cratons) in the Proterozoic: The pre-Columbia connection

CCPortal

DOI	10.1016/j.earscirev.2020.103378
	Baltica (East European Craton) and Atlantica (Amazonian and West African Cratons) in the Proterozoic: The pre-Columbia connection
	Terentiev R.A.; Santosh M.
发表日期	2020
ISSN	00128252
卷号	210
英文摘要	It is generally recognized that the Columbia (Nuna) supercontinent was assembled during the Paleoproterozoic (2.1–1.8 Ga) planetary-scale orogenic events. Paleomagnetic and palinspastic modeling proposes more than a dozen configurations for the Paleoproterozoic supercontinent. The locations and connections of the different continental blocks within this supercontinent remain controversial. The southern margin of Baltica either faced the open ocean or was connected with other paleocontinents such as Atlantica (Amazonian and West African Cratons) in different models. The large Volga-Don province (southwest Russia) has been proposed as the best candidate for connection with the Eburnean/Birimian (West Africa) and Transamazonian (South America) orogens before the Columbia assembly. Here we present a detailed comparison of the ages, compositions, and geochemical features of the voluminous metamorphosed mafic and felsic lithologies, pre- and post-collisional intrusions, and overlying sediments that formed in the interval 2.25–2.05 Ga in the orogens that suture the Archean blocks in Sarmatia, Volgo-Uralia, Amazonia and West Africa. The main events are limited by key complexes as follows: metavolcanic rocks (tholeiites, calc-alkaline, Na-rhyolites) of 2.23–2.12 Ga; pre-collision TTG 2.16–2.13 Ga and gabbro of 2.15–2.13 Ga; meta-sedimentary rocks (greywackes) of >2.10 Ga; coarse terrigenous sediments (conglomerates, sandstones) of 2.11–2.05 Ga; post-collision TTGs of 2.11–2.07 Ga, K-granites of 2.09–2.05 Ga and gabbrodiorites of ca. 2.07 Ga. Available age data allow us to draw a correlation among the Archean domains of Sarmatia, Volgo-Uralia (parts of Baltica), Amazonia and West Africa (parts of Atlantica). Our reconstruction provides a better framework for the crustal evolution and related metallogeny of these continental blocks, as well as the major orogens in the Proterozoic. © 2020 Elsevier B.V.
关键词	Atlantica Baltica Paleogeography Paleoproterozoic supercontinent Tectonic correlation
英文关键词	continental collision; crustal evolution; felsic rock; igneous intrusion; mafic rock; paleoenvironment; paleogeography; Proterozoic; tectonic setting; East European Craton; West African Craton
语种	英语
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/203903
作者单位	Department of Geology, Voronezh State University, Russian Federation; Department Earth Sciences, University of AdelaideSA 5005, Australia; School of Earth Sciences and Resources, China University of Geosciences Beijing, 29 Xueyuan Road, Beijing, 100083, China; Department of Geology, Northwest University, Northern Taibai Str. 229, Xi'an, 710069, China
推荐引用方式 GB/T 7714	Terentiev R.A.,Santosh M.. Baltica (East European Craton) and Atlantica (Amazonian and West African Cratons) in the Proterozoic: The pre-Columbia connection[J],2020,210.
APA	Terentiev R.A.,&Santosh M..(2020).Baltica (East European Craton) and Atlantica (Amazonian and West African Cratons) in the Proterozoic: The pre-Columbia connection.Earth Science Reviews,210.
MLA	Terentiev R.A.,et al."Baltica (East European Craton) and Atlantica (Amazonian and West African Cratons) in the Proterozoic: The pre-Columbia connection".Earth Science Reviews 210(2020).