A Traveling CAI. Minerals from a CAI and its prominent rim have a wide range of oxygen isotopic composition, suggesting formation in more than one reservoir . . Oxygen Isotopic Zoning. Melilite interior has high 16 O (low 17 O) 17 O increases (so 16 O decreases) towards the rim
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Minerals from a CAI and its prominent rim have a wide range of oxygen isotopic composition, suggesting formation in more than one reservoir.
Meteorite data and astrophysical models suggest extensive transport from the inner to outer solar nebula. Silicates in comets support the idea. The new oxygen data show transport back in towards the Sun.