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High-level volcanic-granodioritic intrusions from Zelezniak Hill (Kaczawa Mountains, Sudetes, SW Poland)

Date

2004

Authors

Machowiak, Katarzyna
Muszynski, Andrzej
Armstrong, Richard

Journal Title

Journal ISSN

Volume Title

Publisher

Geological Society of London

Abstract

New petrological and geochemical data on high level (c. 2 km2 silicic lava domes and laccoliths from the Kaczawa Mountains, Sudetes, SW Poland, are presented. The system comprises a carapace facies of exposed ignimbrites and spherlulitic rhyolites. Recovered core (drilled to 55 m) includes volcanic rocks ranging in composition from andesite to rhyodacite, and a plutonic, facies of microgranite and granodiorite. Country rocks (greenschist-facies metavolcanogenic rocks) are contact metamorphosed to hornfels and cut by kersantite veins and a pipe breccia of diatremic origin. New206Pb-238U zircon mineral ages from the volcanic and granitic rocks yield ages of 315 to 316 Ma, making the Zelezniak Hill complex the oldest magmatic rocks so far dated in Avalonia.

Description

Keywords

Keywords: emplacement; igneous geochemistry; igneous intrusion; laccolith; lava dome; magmatism; petrology; Central Europe; Eastern Hemisphere; Eurasia; Europe; Sudetes; World

Citation

URI

http://hdl.handle.net/1885/86474

Collections

ANU Research Publications

Source

Type

Book chapter

Book Title

Physical Geology of High-Level Magmatic Systems

Entity type

Access Statement

License Rights

DOI

10.1144/GSL.SP.2004.234.01.06

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