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Primary magmas and mantle temperatures

Green, David; Falloon, T J; Eggins, Stephen; Yaxley, Gregory

Description

The composition of olivine phenocrysts in Hawaiian tholeiitic picrites and in Mid-Ocean Ridge picrites vary up to Mg91.3# and Mg92.1# respectively. The compositions and liquids temperatures of the magmas crystallizing the most magnesian phenocrysts can be estimated and we find that anhydrous liquids temperatures (at 1 bar pressure) of Hawaiian tholeiitic picrites average 1365°C, for E-MOR picrites average 1355°C, and for N-MOR picrites average 1335°C. Water contents of the magmas decrease in...[Show more]

CollectionsANU Research Publications
Date published: 2001
Type: Journal article
URI: http://hdl.handle.net/1885/66788
Source: European Journal of Mineralogy
DOI: 10.1127/0935-1221/2001/0013-0437

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