Enhanced 3He 4He ratios and cosmogenic helium in ultramafic xenoliths
Recently erupted ultramafic xenoliths generally have ratios of 3He 4He = (5-10) × RA, which are similar to the values characterizing mid-ocean ridge basalts (MORB). During the course of additional investigations of ultramafic xenoliths, samples from several locations have been found with 3He 4He r...
| Главные авторы: | , , |
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| Формат: | Journal article |
| Язык: | English |
| Опубликовано: |
1987
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