Chondrite barium, neodymium, and samarium isotopic heterogeneity and early Earth differentiation.

@article{Carlson2007ChondriteBN,
  title={Chondrite barium, neodymium, and samarium isotopic heterogeneity and early Earth differentiation.},
  author={Richard W Carlson and Maud Boyet and Mary F. Horan},
  journal={Science},
  year={2007},
  volume={316 5828},
  pages={1175-8}
}
Isotopic variability in barium, neodymium, and samarium in carbonaceous chondrites reflects the distinct stellar nucleosynthetic contributions to the early solar system. We used 148Nd/144Nd to correct for the observed s-process deficiency, which produced a chondrite 146Sm-142Nd isochron consistent with previous estimates of the initial solar system abundance of 146Sm and a 142Nd/144Nd at average chondrite Sm/Nd ratio that is lower than that measured in terrestrial rocks by 21 +/- 3 parts per… CONTINUE READING

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