Noble gases in the dynamic mantle
It is proposed that noble gases in the mantle reside mainly in a "hybrid pyroxenite" component that is formed as melt from old subducted oceanic crust reacts with surrounding refractory peridotite under midocean ridges. The gases are presumed to have been acquired early in Earth history, and mixing under midocean ridges of melts from pyroxenites and old crust would pass the noble gases to successive generations of pyroxenites. Much of the complement of noble gases would not be erupted at...[Show more]
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|Source:||Geochemistry, Geophysics, Geosystems. G3|
|01_Davies_Noble_gases_in_the_dynamic_2010.pdf||554.86 kB||Adobe PDF||Request a copy|
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