PETROLOGY OF BOGDAN KHMELNITSKIY VOLCANO (ITURUP ISLAND, THE KURILS): A MODEL OF FRACTIONATION AND MIXING IN THE MAGMA CHAMBER

Abstract

Geological and petrological features of Quaternary volcanic rocks from Bogdan Khmelnitskiy Volcano were used, along with the results of a mass balance calculation, detailed mineralogy, and crystal size distribution, to elucidate the character of fractionation and mixing that controlled the melt evolution in the magma chamber.