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Permsko-karboński wulkanizm w Sudetach

Awdankiewicz Marek

Przegląd Geologiczny

2025

Vol. 73, nr 9

795--803

Post-orogenic, post-collisional, intracontinental Permian-Carboniferous volcanism in the Sudetes, Central Europe, marked the transition from the Variscan Orogeny to the continental rifting in the eastern central Pangea. The volcanic rocks are part of volcano-sedimentary successions found in the Intra-Sudetic and North-Sudetic synclinoria. Between 313-287 Ma and culminating around 299 Ma, magmas originated from subduction-modified mantle sources and evolved in crustal magma chambers yielding rhyolitic ignimbrites and lavas with less widespread rocks of andesitic and trachyandesitic compositions. The older volcanic rocks reveal supra-subduction geochemical characteristics, while the younger ones show more pronounced within-plate signatures. Several tens of volcanic centres formed in the region, including lava fields, shield volcanoes, large rhyolite extrusions, ignimbrite caldera, maars and tuff rings, and numerous laccoliths and sills. Volcanic edifices underwent substantial erosion and supplied volcanogenic detritus into local depositional systems, while the caldera acted as an intrabasinal depositional centre. The volcanic rocks are significantly affected by post-volcanic and, mostly, diagenetic alteration. In recent years the extinct Permian-Carboniferous volcanoes became more widely recognized as regional nature attraction and part of the UNESCO Global Geoparks network.