Open AccessPetrology of Late Albian tuffites from Bakhchysarai district (Southwestern Crimea)
Author(s) -
Daniil V. Popov,
Nikolai Nekrylov,
P. Yu. Plechov
Publication year - 2016
Publication title -
vestnik moskovskogo universiteta. seriâ 4, geologiâ
Language(s) - English
Resource type - Journals
ISSN - 0579-9406
DOI - 10.33623/0579-9406-2016-1-82-91
Subject(s) - plagioclase , phenocryst , geology , geochemistry , quartz , melt inclusions , feldspar , zoning , petrology , mineralogy , paleontology , volcano , political science , law
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.