Richard Walker
University of Maryland
Current Projects
- Fingerprinting Late Additions to the Earth and Moon via the Study of Highly Siderophile Elements in Lunar Impact Melt Rocks — 2014 NAI
- Fingerprinting Late Additions to the Earth and Moon via the Study of Highly Siderophile Elements in Lunar Impact Melt Rocks — 2013 NAI
- Fingerprinting Late Additions to the Earth and Moon via the Study of Highly Siderophile Elements in Lunar Impact Melt Rocks — 2012 NAI
- Fingerprinting Late Additions to the Earth and Moon via the Study of Highly Siderophile Elements in Lunar Impact Melt Rocks — 2011 NAI
- Fingerprinting Late Additions to the Earth and Moon via the Study of Highly Siderophile Elements in Lunar Impact Melt Rocks — 2010 NAI
- Fingerprinting Late Additions to the Earth and Moon via the Study of Highly Siderophile Elements in Lunar Impact Melt Rocks — 2009 NAI
- Fingerprinting Late Additions to the Earth and Moon via the Study of Highly Siderophile Elements in Lunar Impact Melt Rocks — 2008 NAI
- Summer Undergraduate Internship in Astrobiology — 2008 NAI
- Fingerprinting Late Additions to the Earth and Moon via the Study of Highly Siderophile Elements in Lunar Impact Melt Rocks — 2007 NAI
- Constraints on the Chemical Nature of the Lunar Impact Basin Forming Impactors — 2006 NAI
- Identification of Chemical Characteristics of Basin-Forming Impactors on the Moon — 2005 NAI
- Characterization of the Early Bombardment Through the Investigation of Lunar Breccias — 2004 NAI
- View all 12 projects
NAI Project Collaborators
- Project collaborators as reported by the latest NAI Annual Report.
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Publications
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Bottke, W. F., Walker, R. J., Day, J. M. D., Nesvorny, D., & Elkins-Tanton, L. (2010). Stochastic Late Accretion to Earth, the Moon, and Mars. Science, 330(6010), 1527–1530. doi:10.1126/science.1196874
See Project -
Day, J. M. D., Walker, R. J., James, O. B., & Puchtel, I. S. (2010). Osmium isotope and highly siderophile element systematics of the lunar crust. Earth and Planetary Science Letters, 289(3-4), 595–605. doi:10.1016/j.epsl.2009.12.001
See Project -
Day, J. M. D., Walker, R. J., Qin, L., & Douglas Rumble, I. I. I. (2012). Late accretion as a natural consequence of planetary growth. Nature Geosci, 5(9), 614–617. doi:10.1038/ngeo1527
See Project -
Moskovitz, N. A., & Walker, R. J. (2011). Size of the group IVA iron meteorite core: Constraints from the age and composition of Muonionalusta. Earth and Planetary Science Letters, 308(3-4), 410–416. doi:10.1016/j.epsl.2011.06.010
See Project -
Riches, A. J. V., Day, J. M. D., Walker, R. J., Simonetti, A., Liu, Y., Neal, C. R., & Taylor, L. A. (2012). Rhenium–osmium isotope and highly-siderophile-element abundance systematics of angrite meteorites. Earth and Planetary Science Letters, 353-354, 208–218. doi:10.1016/j.epsl.2012.08.006
See Project -
Walker, R. J. (2009). Highly siderophile elements in the Earth, Moon and Mars: Update and implications for planetary accretion and differentiation. Chemie der Erde – Geochemistry, 69(2), 101–125. doi:10.1016/j.chemer.2008.10.001
See Project - Moskovitz, N. & Walker, R. (2011). Size of the Group IVA Iron Meteorite Parent Body. EPSC-DPS Joint Meeting 2011, 1652. See Project
- Moskovitz, N.A. & Walker, R.J. (2011). Size of the Group IVA Iron Meteorite Core: Constraints from the Age and Composition of Muonionalusta. Meteoritics and Planetary Science Supplement, 74: 5505. See Project
- Moskovitz, N.A. & Walker, R.J. (2011). Sizes of Iron Meteorite Parent Bodies: Constraints from the Age and Composition of the IVA Muonionalusta [Abstract]. Lunar and Planetary Institute Science Conference. See Project
- View all 9 publications
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Phone:
301-405-4089 -
Email:
rjwalker@astro.umd.edu