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Publisher © Czech Geological Survey, ISSN: 2336-5757 (online), 0514-8057 (print)

Tanvald Massif – relicof a magmatic body in the Krkonoše-Jizera Composite Massif

Josef Klomínský, Ferry Fediuk, Pavel Schovánek, Tomáš Jarchovský

Geoscience Research Reports 42, 2009 (GRR for 2008), pages 158–160

Keywords: Liberec Granite, topaz, Krkonoše-Jizera Composite Massif, magmatic fabric, magmatic erosion

Map sheets: Liberec (03-14)

Full text (PDF, 0.67 MB)

Abstract

Two spatially separated outcrops of the Tanvald granite in the exocontact of the Liberec granite in the western part of the Krkonoše-Jizera Composite Massif comprise relics of the former larger size of Tanvald Massif. Its substantial part has been probably destructed by the magmatic erosion of the younger Liberec granite. This idea of magmatic "cannibalism" is supported by the Tanvald and Liberec granite field relations, contrast in their magmatic fabric and the lithological and geochemical internal zonation within the Tanvald granite.