Petrology of Late Albian tuffites from Bakhchysarai district (Southwestern Crimea)

Autor: Pavel Yu. Plechov, N. A. Nekrylov, Daniil Popov
Rok vydání: 2016
Předmět:
Zdroj: Moscow University Bulletin. Series 4. Geology. :82-91
ISSN: 0579-9406
Popis: We present first data on the composition of melt inclusions in plagioclase and quartz crustal clasts and detailed study of plagioclase chemical zoning and mineral compositions from Bakhchysarai Late Albian tuffites. All magmatic melt compositions fall into field of high-K rhyolites. Measured water content in melt inclusions is up to 4 wt.%. Phenocrysts crystallized at the temperature within range 820-860 °C and pressure not less than 1 kbar. Bakhchysarai tuffites were formed in active continental margin geotectonical settings.
Databáze: OpenAIRE