globalchange  > 影响、适应和脆弱性
DOI: 10.1007/s00531-013-0975-4
论文题名:
Constraining genesis and geotectonic setting of metavolcanic complexes: A multidisciplinary study of the Devonian Vrbno Group (Hrubý Jeseník Mts., Czech Republic)
作者: Janoušek V.; Aichler J.; Hanžl P.; Gerdes A.; Erban V.; Žáček V.; Pecina V.; Pudilová M.; Hrdličková K.; Mixa P.; Žáčková E.
刊名: International Journal of Earth Sciences
出版年: 2014
卷: 103, 期:2
起始页码: 455
结束页码: 483
语种: 英语
英文关键词: Bohemian Massif ; Devonian volcanic rocks ; Geochemistry ; Sr-Nd-O isotopes ; U-Pb zircon dating ; Variscan orogeny
英文摘要: The low-grade metavolcanic/volcanosedimentary complex of the Devonian Vrbno Group (Silesicum, NE Bohemian Massif, Czech Republic) occurs in two ~NE-SW trending belts, separated by tectonic slices of Cadomian metagranitic paraautochton. (1) The basic-intermediate lavas of the calc-alkaline Western Volcanic Belt came from a moderately depleted mantle (εNd370~+3). Rare rhyolites (374.0 ± 1.7 Ma: 2σ, LA-ICP-MS U-Pb Zrn) were derived most likely from immature crust or by extensive fractionation of primary basaltic melts. The rock association is interpreted as a vestige of a deeply dissected continental arc. (2) The Eastern Volcanic Belt consists mainly of (nearly) contemporaneous (371.0 ± 1.4 Ma) felsic alkaline lavas with high HFSE contents, as well as high Ga/Al and Fe/Mg ratios, typical of within-plate igneous setting. The petrology and Nd-Sr isotopic data point to a high-T anatexis of a young metagranitic crust, resembling the Cadomian (Brunovistulian) basement, in a back-arc setting. The attenuated Brunovistulian lithosphere could have partially melted by the heat provided by the upwelling asthenosphere and/or underplating basic magma. (3) Finally, the region was penetrated by numerous subalkaline, MORB/EMORB-like dolerite sheets-a hallmark of the considerable crustal thinning. © 2013 Springer-Verlag Berlin Heidelberg.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894256002&doi=10.1007%2fs00531-013-0975-4&partnerID=40&md5=e84fd14e69ecb015919a818d085e7bcc
Citation statistics:
被引频次[WOS]:35   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70414
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

Files in This Item:

There are no files associated with this item.


作者单位: Czech Geological Survey, Klárov 3, 118 21, Prague 1, Czech Republic; Geowissenschaften, Goethe Universität Frankfurt, Altenhöferallee 1, 60438 Frankfurt am Main, Germany; Department of Earth Sciences, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa; Charles University, Albertov 6, 128 43, Prague 2, Czech Republic

Recommended Citation:
Janoušek V.,Aichler J.,Hanžl P.,et al. Constraining genesis and geotectonic setting of metavolcanic complexes: A multidisciplinary study of the Devonian Vrbno Group (Hrubý Jeseník Mts., Czech Republic)[J]. International Journal of Earth Sciences,2014-01-01,103(2)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Janoušek V.]'s Articles
[Aichler J.]'s Articles
[Hanžl P.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Janoušek V.]'s Articles
[Aichler J.]'s Articles
[Hanžl P.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Janoušek V.]‘s Articles
[Aichler J.]‘s Articles
[Hanžl P.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.