Geology and Petrography of a Large Porphyritic Andesite Dyke at Paradise Harbour, Danco Coast, West Antarctica

• Autorzy: Birkenmajer K. , Lorenc M.
• Języki publikacji: EN

Abstrakty

EN

A large porphyritic dyke exposed at Porphyry Ridge, Paradise Harbour, Danco Coast (northern Antarctic Peninsula, West Antarctica), consists of albitized andesite. Together with other hypabyssal intrusions (dyke swarm) and plutonic intrusions (granite-granodiorite-gabbro - mainly sills), it belongs to the Late Cretaceous Andean Intrusive Suite (AIS) which post-dates a monotonous, some 2000 m thick, Early Cretaceous basaltic-andesitic volcanic pile (Antarctic Peninsula Volcanic Group - APVG). The volcanic effusions (APVG) and the successive plutonic and hypabyssal intrusions (AIS) had formed in response to subduction of the SE Pacific oceanic crust under continental crust of Antarctic Peninsula.

Słowa kluczowe

EN

West Antarctica; Danco Coast; large andesite dyke; Late Cretaceous

• Wydawca: Centrum Upowszechniania Nauki PAN
• Czasopismo: Bulletin of the Polish Academy of Sciences. Earth Sciences
• Rocznik: 2003
• Tom: Vol. 51, nr 2
• Strony: 161--171
• Opis fizyczny: Bibliogr. 24 poz.

Twórcy

autor

Birkenmajer K.

autor

Lorenc M.

• Institute of Geological Sciences, Polish Academy of Sciences, Kraków, Poland