Variscan orogeny in Bohemian Massif and French Massif Central: differences and similarities

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F12%3A00000112" target="_blank" >RIV/00025798:_____/12:00000112 - isvavai.cz</a>
Result on the web
<a href="http://geolfrance.brgm.fr" target="_blank" >http://geolfrance.brgm.fr</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Variscan orogeny in Bohemian Massif and French Massif Central: differences and similarities
Original language description
Following are main similarities and differences between the Bohemian Massif and the French Massif Central: Crustal-scale geometry and orogenic architecture: in the BM the lower crust is composed of 10 km thick felsic layer situated beneath a mafic one. The BM is a supra-subduction orogen of double crustal thickness mainly derived from the Upper plate, except for exhumed felsic orogenic lower crust, which comes from the Lower plate. In contrast, the current lower crust of the FMC consists of a layered mafic crust (gabbros, mafic granulites and minor felsic granulites) located beneath a stack of mainly felsic units. The FMC architecture is derived from both Upper and Lower plates. Subduction processes: in the BM these were marked by 60 m.y. lasting continuous SE-dipping subduction leading to the formation of blueschist-facies rocks with A, B and C-types of eclogites and significant arc magmatism. In contrast, the FMC reveals B-type eclogites and discontinuous arc magmatism related to a p
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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