engleski

Volcanic Rocks of the Island Vis (Adriatic Sea, Croatia)

Studied volcanic rocks are on the basis of petrography and structure classified as augite andesites, metaandesites and metabasalts. They all had originally basalt composition. Some of them show evidences of magma mixing. Those rocks having amygdules mantled by dark area are most probably originated in submarine environment. Immobile and incompatible trace element concentrations and ratios point to the calc-alkaline nature of rocks and their possible genesis in the island volcanic arc.

Vis; Basalt; Trachyandesite; Andesite; Calc-alkaline rocks; REE pattern

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