Experimental constraints on the dissolution and partitioning behavior of carbon during the melting of carbonate-rich sediments.

Key Points

• The aim is to understand how carbon dissolves and partitions during the melting of carbonate-rich sediments under different conditions.
• Conducted experiments at 1 GPa and temperatures ranging from 1200 to 1600 °C.
• Investigated the effects of varying water content on carbon behavior during melting.
• Analyzed carbon dissolution primarily in the form of carbonate ions in silicate melts.
• Carbon dissolution decreases with rising temperature and water content.
• Carbon solubility increases as the polymerization of the melt decreases.
• Carbon preferentially accumulates in the fluid phase rather than the silicate melt.