Phase Relationships of Hydrous Alkalic Magmas at High Pressures: Production of Nepheline Hawaiitic to Mugearitic liquids by Amhibole-Dominated Fractional Crystallization within the Lithospheric Mantle
Experimental melting studies were conducted on a nepheline mugearite composition to pressures of 31 kbar in the presence of 0-30% added water. A temperature maximum in the near-liquidus stability of amphibole (with olivine) was found for a water content of 3·5 wt % at a pressure of 14 kbar. This is interpreted to have petrogenetic significance for the derivation of nepheline mugearite magmas from nepheline hawaiite by amphibole-dominated fractional crystallization at depth within the...[Show more]
|Collections||ANU Research Publications|
|Source:||Journal of Petrology|
|01_Irving_Phase_Relationships_of_Hydrous_2008.pdf||666.69 kB||Adobe PDF||Request a copy|
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.