A review of Rb-Sr isotope patterns in the Carboniferous granitoids of the Sudetes in SW Poland
Authors
Pádhraig S. Kennan
University College Dublin, Geology Department, Belfield, Dublin-4, Ireland
Helena Dziedzic
Polska Akademia Nauk, Instytut Nauk Geologicznych, Zakład Geologii Sudetów, 50-449 Wrocław, ul. Podwale 75, Poland
Marek W. Lorenc
Polska Akademia Nauk, Instytut Nauk Geologicznych, Zakład Geologii Sudetów, 50-449 Wrocław, ul. Podwale 75, Poland
Michał P Mierzejewski
Uniwersytet Wrocławski, Instytut Nauk Geologicznych, 50-205 Wrocław, ul. Cybulskiego 30, Poland
Keywords:
Sudetes, Variscan granites, Rb-Sr ages, Sr-isotope systems, magma source.
Abstract
Carboniferous granite intrusions are a relatively uncontroversial element in the geological history of the Sudetes in SW Poland. The Sr-isotope systems in these granites show geological scatter indicative of contamination by crustal rock, failure to homogenise during intrusion/crystallisation and inheritance from source. Rb-Sr ages are thus somewhat compromised and imprecise. The granites originated from a relatively primitive source that underlay much of the region in Carboniferous times.
