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- Wed Nov 18, 2015 12:49 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A Sudden Jet on Comet 67P (2015 Nov 18)
- Replies: 10
- Views: 2915
Re: APOD: A Sudden Jet on Comet 67P (2015 Nov 18)
How do terrestrial geochemical and tectonic processes affect the D/H ratio? In particular, I know evaporation affects 18O/16O ratios, leaving the oceans relatively rich in 18O and presumably deuterium. Thus, the water hydrating minerals in sea-floor weathering should be relatively D rich; at least s...