학술논문
A New Oxygen Barometer for Solar System Basaltic Glasses Based on Vanadium Valence
Document Type
Report
Author
Source
Lunar and Planetary Science XXXV: Special Session: Oxygen in the Solar System, II.
Subject
Language
English
Abstract
The determination of oxidation conditions for basaltic magmas derived by the melting of planetary mantles is critical to our understanding of the nature and evolution of planetary interiors. Yet, these determinations are compromised in terrestrial and especially extraterrestrial basalts by our analytical and computational methods for estimating oxygen fugacity (fO2). For example, mineralogical barometers (1, 2) can be reduced in effectiveness by subsolidus re-equilibration of mineral assemblages, inversion of mineralogical data to melt characteristics, and deviations of the natural mineral compositions from ideal thermodynamic parameters.