The compositions of primary carbonate melts and their evolution through wallrock reaction in the mantle
We have experimentally determined the compositions of near-solidus melts from depleted natural lherzolite at pressures greater than 25 kbar. The melts are carbonatitic with low alkali contents and Ca/(Ca + Mg) ratios of 0.72-0.74. Primary carbonate melts from fertile mantle are more sodic with Ca/(C...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
| Published: |
1993
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