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142 Nd Evidence for Early (>4.53 Ga) Global Differentiation of the Silicate Earth
Abstract
New high-precision samarium-neodymium isotopic data for chondritic meteorites show that their 142 Nd/ 144 Nd ratio is 20 parts per million lower than that of most terrestrial rocks. This difference indicates that most (70 to 95%) of Earth's mantle is compositionally similar to the incompatible element–depleted source of mid-ocean ridge basalts, possibly as a result of a global differentiation 4.53 billion years ago (Ga), within 30 million years of Earth's formation. The complementary enriched reservoir has never been sampled and is probably located at the base of the mantle. These data influence models of Earth's compositional structure and require revision of the timing of global differentiation on Earth's Moon and Mars.
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Wilde, S. A., Valley, J. W., Peck, W. H., & Graham, C. M. (2001) · Nature · doi:10.1038/35051550 · Cited by 1,744
Simulations of a late lunar-forming impact
Canup, R. M. (2004) · Icarus · doi:10.1016/j.icarus.2003.09.028 · Cited by 669
Cited by
Magma oceans in the inner solar system
Elkins-Tanton, L. T. (2012) · Annual Review of Earth and Planetary Sciences · doi:10.1146/annurev-earth-042711-105503 · Cited by 601
Linked magma ocean solidification and atmospheric growth for Earth and Mars
Elkins-Tanton, L. T. (2008) · Earth and Planetary Science Letters · doi:10.1016/j.epsl.2008.03.062 · Cited by 589
Serpentinization as a source of energy at the origin of life
RUSSELL, M. J., HALL, A. J., & MARTIN, W. (2010) · Geobiology · doi:10.1111/j.1472-4669.2010.00249.x · Cited by 527
Late formation and prolonged differentiation of the Moon inferred from W isotopes in lunar metals
Touboul, M., Kleine, T., Bourdon, B., Palme, H., & Wieler, R. (2007) · Nature · doi:10.1038/nature06428 · Cited by 466
The isotopic nature of the Earth’s accreting material through time
Dauphas, N. (2017) · Nature · doi:10.1038/nature20830 · Cited by 450
Metadata
- Authors
- Boyet, M., & Carlson, R. W.
- Venue
- Science
- Published
- 2005-07-22
- Volume
- 309
- Issue
- 5734
- Pages
- 576-581
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W1966022977
- Cited by
- 643
- References
- 2
- FWCI
- 24.21
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
