Melt inclusions in pyroclastic quartz from the Carboniferous deposits of the Holy Cross•Mts, and the problem of magmatic corrosion

Andrzej Kozłowski


Pyroclastic quartz from Carboniferous clayey sediments of the Holy Cross Mts bears silicate glass incisions, frequently altered or refilled by pneumatolytic and hydrothermal solutions. Homogenization and crushing stage studies have yielded the quartz crystallization and probably eruption temperature 790-810°C, ·cooling rate, and have evaluated changes of pressure of volatiles. The invalidity of common interpretation of the so-called "magmatic corrosion" phenomena is presented.

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