Genesis and evolution of Sudetic late Hercynian volcanic rocks inferred from trace element modelling

• Autorzy: Dziedzic, K.
• Języki publikacji: EN

Abstrakty

EN

The late Hercynian volcanic complexes in the Sudetes originated due to decompressional melting of the subcontinental lithospheric source region. The volcanic activity started with the calc-alkaline andesite magma in an Early Permian, followed by the picritic relicts and the andesitic assemblage rocks both of tholeiitic affinity. The tholeiitic andesites originated by AFC processes involving mantle-and lower crust-derived material. The differentiation of the andesitic parental magma within high-level magma chamber(s) by AFC processes involving upper crust components yielded the acid volcanic varieties in the area. The geodynamic processes and geological relations correspond with those of continental rift zones.

Słowa kluczowe

EN

andesite; rhyolite; partial melting; modelling; AFC; lithospheric mantle; rifting; rift depressions; fracture zones

• Czasopismo: Geologia Sudetica
• Rocznik: 1998
• Tom: Vol. 31, nr 1
• Strony: 79-91

Twórcy

autor

Dziedzic, K.

• Instytut Nauk Geologicznych, Uniwersytet Wrocławski, ul. Cybulskiego 30, 50-205 Wrocław, Poland