Large Th-230-excesses in basalts produced by partial melting of spinel lherzolite
Excesses of 230Th over 238U in mid-ocean ridge basalts (MORB) require that the mantle source region preferentially retains U over Th during partial melting. Based on existing mineral-melt partitioning data, 230Th excesses are widely cited as evidence that partial melting beneath ridges begins within...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2000
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