气候变化领域集成服务门户(CCPortal): Correlation of allochthonous terranes and major tectonostratigraphic domains between NW Iberia and the Bohemian Massif; European Variscan belt

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DOI	10.1007/s00531-019-01800-z
	Correlation of allochthonous terranes and major tectonostratigraphic domains between NW Iberia and the Bohemian Massif; European Variscan belt
	Martínez Catalán J.R.; Collett S.; Schulmann K.; Aleksandrowski P.; Mazur S.
发表日期	2020
ISSN	14373254
起始页码	1105
结束页码	1131
卷号	109 期号:4
英文摘要	The NW Iberian Allochthon and the Teplá-Barrandian and Moldanubian zones represent the internal parts of the Variscan belt in their respective domains. A correlation based on the lithological association, protolith ages, metamorphic evolution, detrital zircon age spectra and tectonic setting is attempted between the NW Iberian Massif and SE Bohemian Massif in order to check whether they could have formed part of the same allochthonous stack. The Galicia-Trás-os-Montes Zone of the Iberian Massif and the internal zones of the Bohemian Massif include from bottom to top a Parautochthon and Lower Allochthon representing the outer edge of the northern Gondwana margin, an oceanic Middle Allochthon with Cambro-Ordovician and Early Devonian ophiolites and an Upper Allochthon interpreted as a peri-Gondwanan terrane. Early Variscan, subduction-related high-pressure metamorphism characterizes many of the allochthonous units, with ages younging from the structurally upper to the lower units from 400–385 Ma to 370–360 Ma, respectively. High- and ultrahigh-pressure metamorphism occurred also in the Saxothuringian Autochthon at 360–340 Ma, but not in the NW Iberian Autochthon. The different behavior of the Autochthon in the Iberian and Bohemian massifs accounts for their distinct evolutions from 360 Ma onward. We conclude that the Upper Allochthon was a unique peri-Gondwanan terrane, whereas the Middle Allochthon represents units of the same peri-Gondwanan ocean, opened at the Cambro-Ordovician boundary, and having recorded localized renewed activity in the Silurian–Early Devonian. No other oceans separated the Lower Allochthon, Parautochthon and Autochthon. © 2019, Geologische Vereinigung e.V. (GV).
英文关键词	Correlation criteria; Galicia-Trás-os-Montes; Moldanubian; Saxothuringian; Teplá-Barrandian; Variscan belt
语种	英语
scopus关键词	age determination; allochthon; Hercynian orogeny; lithology; protolith; stratigraphic correlation; tectonic setting; tectonostratigraphy; ultrahigh pressure metamorphism; Bohemian Massif; Czech Republic; Galicia [Poland-Ukraine]; Portugal; Tepla-Barrandian; Tras os Montes
来源期刊	International Journal of Earth Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147685
作者单位	Department of Geology, University de Salamanca, Salamanca, 37008, Spain; Centre for Lithospheric Research, Czech Geological Survey, Prague, Czech Republic; Institute de Physique du Globe de Strasbourg, IPGS–UMR 7516, CNRS et Université de Strasbourg, Strasbourg, France; Institute of Geological Sciences, University of Wroclaw, Wrocław, Poland; Polish Geological Institute–National Research Institute, Wroclaw, Poland; Institute of Geological Sciences PAS, Research Centre in Kraków, Senacka 1, Kraków, 31-002, Poland
推荐引用方式 GB/T 7714	Martínez Catalán J.R.,Collett S.,Schulmann K.,et al. Correlation of allochthonous terranes and major tectonostratigraphic domains between NW Iberia and the Bohemian Massif; European Variscan belt[J],2020,109(4).
APA	Martínez Catalán J.R.,Collett S.,Schulmann K.,Aleksandrowski P.,&Mazur S..(2020).Correlation of allochthonous terranes and major tectonostratigraphic domains between NW Iberia and the Bohemian Massif; European Variscan belt.International Journal of Earth Sciences,109(4).
MLA	Martínez Catalán J.R.,et al."Correlation of allochthonous terranes and major tectonostratigraphic domains between NW Iberia and the Bohemian Massif; European Variscan belt".International Journal of Earth Sciences 109.4(2020).