GENEZE KŘEMENNÝCH ŽIL U VELKÉ KRAŠE V SILEZIKU

Marek Slobodník, Antonín Přichystal, Rostislav Morávek

Abstrakt

Fluid inclusions from the vein quartz near Velká Kraš have been investigated. Inclusions with two immiscible liquids, aqueous (L1) and carbonic (L2) one, have been found so far. Most of inclusions have a stable ratio of both liquids (L2/L1 = 0.1). Based on petrographic observation we could state that fluids might be trapped close to the one phase and two phase boundary of the H2O-NaCl-CO2 system. The two cogenetic fluid inclusions, with immiscible CO2-rich and H2O-rich fluid phases, have been used for an estimation of the p-T conditions. The temperature 320 °C and presure 2 050 bars could be a lower limit for the precipitation of the quartz. The salinity of the aqueous solution is 4.5 mass. % NaCl eq. The trapped fluids show a nature of the pegmatite post-magmatic solutions.

Bibliografická citace

Slobodník, M., Přichystal, A., & Morávek, R. (2016). GENEZE KŘEMENNÝCH ŽIL U VELKÉ KRAŠE V SILEZIKU. Geologické výzkumy na Moravě a ve Slezsku, 17(1-2). Získáno z https://journals.muni.cz/gvms/article/view/4757

Klíčová slova

Silesicum; quartz; fluid inclusions; oxygen isotopes

Plný Text:

Reference

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