Early atmosphere/magma ocean equilibria: Constraints from the experimental determination of nitrogen, ammonia, and carbon monoxide

摘要

Primitive atmospheres are proposed to have been carbon-bearing and reducing. Carbon monoxide can be a significant component of such fluids, and a determination of its solubility in a coexisting basaltic magma ocean is therefore desirable. Although previous studies have aimed to determine CO solubility in basalt, none have measured it directly, and the low CO contents of the experimental fluids have led to large uncertainties in the solubility estimates. In this study we have therefore used a fluid of high CO content and measured its solubility directly using Fourier transform infrared (FTIR) spectroscopy.