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Unformatted text preview: 10.MgFe ration of olivine xenoliths basaltic flow is 9:1. 11.Diameter of Sun is 100 earths 12.Oxygen easily combines with metals and silicates? 13.30-120 million years of earth before Big Whack 14.Moon is 4.4 billion years old/4.4127 15.Rotate = day length turn on an axis. Revolution is an orbit. 16.Atmosphere is N, O, Ar, H 2 O, CO 2 17.Most iron is in the core, 80% of mass is in the mantle. 18.Oceans weight more than atmosphere 19.10x Argon than CO 2 20.No water on Venus or Moon 21.Radius of inner core is 1250km 22.Lots of Cobalt and Nickle (just pass Fe on peridodical elements) 23.Big Whack: 4.42 billion years ago 24.Today’s heat is from K to Ar and Calcium 25.Mantle is O, Mg, Si, Fe 26.Titon has water...
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- Spring '10
- Ron, Big Whack impact, Cold accretion tu, past-I ron elements