@Article{Guan:2000, author = {Y. Guan and K.D. McKeegan and G.J. MacPherson }, title={Oxygen isotopes in calcium-aluminum-rich inclusions from enstatite chondrites: New evidence for a common {CAI} source in solar nebula}, journal={Earth Planet. Sci. Lett.}, year={2000}, volume={181}, number={}, month={Sep}, pages={271--277}, note={}, annote={}, keywords={oxygen; isotopes; enstatite chondrites; calcium-aluminum inclusions; solar system}, url={http://sims.ess.ucla.edu/PDF/guan_et_al_EPSL_2000.pdf}, doi={10.1016/S0012-821X(00)00218-1}, abstract={Calcium-aluminum-rich inclusions (CAIs) from enstatite chondrites have large $^{16}$O excesses, similar to CAIs in carbonaceous and ordinary chondrites, and are also similar in morphology, mineralogy and Al-Mg isotopic systematics. These similarities provide new evidence that most CAIs might have formed in a single, restricted nebular locale and were then distributed unevenly throughout the various chondrite accretion regions.} }