Cenozoic Intraplate Alkaline Volcanism of Western Bohemia.

Autor:	Ulrych, Jaromír, 1943-
Další autoři:	Cajz, Vladimír, 1959- Pivec, Edvín Novák, Jiří Karel Nekovařík, Čestmír, 1942-2013 Balogh, Kadosa
Jazyk:	angličtina
Předmět:	geofyzika tektonika zemětřesení geophysics geotectonics earthquake články journal articles Western Bohemia alkaline volcanism Ohře Rift Cheb-Domažlice Graben tectonics
Druh dokumentu:	Non-fiction
ISSN:	0039-3169
Abstrakt:	Abstract: Three independent volcanic suites have been recognised in W Bohemia: (i) the old unimodal alkaline ol. nephelinite-tephrite (29-19 Ma) in the Ohře Rift, (ii) two contemporaneous weakly (trachybasalt/trachyandesite-trachyte/rhyolite; 13-11 Ma) and strongly (ol. nephelinite-tephrite/basanite; 12-8 Ma) alkaline series in the flank of the Cheb-Domažlice Graben formed by the Teplá Highland and (iii) the young unimodal ol. melilitite/ol. nephelinite alkaline suite (2.0-0.12 Ma) at the intersection of the above mentioned structures in the Cheb Basin. The magmas of all the suites are mantle-derived and, in the case of the Cheb-Domažlice Graben series, associated with the AFC process. Two main fault systems: (i) ENE-WSW and (ii) NNW-SSE are developed in W Bohemia, corresponding to the directions of the two prominent taphrogenic structures. The southwesterly continuation of the Ohře Rift across the Mariánské Lázně Fault is marked by volcanics only.
Databáze:	Katalog Knihovny AV ČR
Externí odkaz:	Full text from SpringerLink