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7481489 
Journal Article 
Petrology and geochemistry of metabasalts from Rakovec (Paleozoic of Gemeric unit, inner western Carpathians) 
Hovorka, D; Ivan, P; Jilemnicka, L; Spisiak, J 
1988 
39 
4 
395-425 
English 
Metabasalts from Rakovec are the most frequent rocks of the complex of metamorphosed volcanites, volcaniclasts and pelitic sediments included in Paleozoic. They occur as aphyric and porphyric types (clinopyroxene phenocrysts, and/or albitized plagioclase) with massive and amygdaloidal varieties and form lava flows several meters thick, sometimes showing pillow structure. The study of clinopyroxene composition as well as the distribution of REE and other elements (Hf, Ta, Th, Y, Zr) considered immobile during metamorphism has shown their affinity to E-MORB, and/or OIT types. The basalts underwent poly-phase metamorphism. The origin of Na-Ca amphibole in its PT-conditions corresponds to the interval between greenschist and blueschist facies and the origin of actinolitic hornblende to greenschist facies. -from Authors 
aphyric; metabasalt; Paleozoic; porphyric; Carpathians; Czechoslovakia; Rakovec