Can I read Oxygen Isotopes and the Moon-Forming Giant Impact on EtoBox?

Oxygen Isotopes and the Moon-Forming Giant Impact by U. Wiechert; A. N. Halliday; D.-C. Lee; G. A. Snyder; L. A. Taylor; D. Rumble is a Medicine article available to read on EtoBox.

What is Oxygen Isotopes and the Moon-Forming Giant Impact about?

We have determined the abundances of ^16^ O, ^17^ O, and ^18^ O in 31 lunar samples from Apollo missions 11, 12, 15, 16, and 17 using a high-precision laser fluorination technique. All oxygen isotope compositions plot within ±0.016 per mil (2 standard deviations) on a single mass-dependent fractionation line that is identical to the terrestrial fractionation line within uncertainties. This observation is consistent with the Giant Impact model, provided that the proto-Earth and the smaller impactor planet (named Theia) formed from an identical mix of components. The similarity between the proto-Earth and Theia is consistent with formation at about the same heliocentric distance. The three oxygen isotopes (Δ ^17^ O) provide no evidence that isotopic heterogeneity on the Moon was created by lunar impacts.

Who reads Oxygen Isotopes and the Moon-Forming Giant Impact?

Author

U. Wiechert; A. N. Halliday; D.-C. Lee; G. A. Snyder; L. A. Taylor; D. Rumble

Publisher

American Association for the Advancement of Science; American Association for the Advancement of Science (AAAS); Publons; Oxford University Press (OUP); Test accounts; Research Square (ISSN 0036-8075)

Published

2001

Language

EN

Field

Medicine (Social Sciences)