dwalker

Profile

David Walker

Higgins Professor

Earth and Environmental Sciences

Geochemistry

113 Comer

61 Route 9W - PO Box 1000

Palisades

NY

10964-8000

US

Phone: 

(845) 365-8658

Fax: 

(845) 365-8155

dwalker@ldeo.columbia.edu

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Fields of interest: 

Experimental Petrology

Examination of the chemical and physical evolution of the terrestrial planets by the methods of experimental petrology. Parallel interest in the development of new experimental techniques and new materials.

Education

List of degrees from highest to lowest:

AB

Oberlin

1968

AM

Harvard

1970

Ph.D.

Harvard

1972

Honors & Awards: 

Clarke Medal, Geochemical Society 1975

Day Medal, Geological Society of America 1994

Member, National Academy of Sciences 1999

Hess Medal, American Geophysical Union, 2010

Educational Activities: 

Introduction to Mineralogy W4113x (alternate years)

Chemical Geology W4009x (alternate years)

Alternate Energy Resources W4200y

Field Mapping W4013y (alternate years)

Advanced Petrology Seminar (as appropriate)

Rocks and Minerals

Solubility and Radwaste

Is the Earth's Core Leaking?

Featured in the Following Videos:

The Alpha Predator of the Ordovician

Orogenous Zones and How Rock Flows

Seeing Red: The Great Oxygenation

The Secret of the Blue Quartz

The Death Assemblage, and Worms in the Stone

The 415-Day Year

Is the Earth's Core Leaking?

Selected Publications:

Partitioning of molybdenum to 60 kbar along a warped Fe-FeS liquidus Walker, D.; Li, J. Chemical Geology Feb 28 Volume: 248 Issue: 3-4 p.: 166-173 (2008) DOI 10.1016/j.chemgeo.2007.04.006

Galena stability to 26 kbar Wheeler, K. T.; Walker, D.; Johnson, M. C. American Journal of Science Mar Volume: 307 Issue: 3 p.: 590-611 (2007) Doi 10.2475/03.2007.02

Constraints on core formation from Pt partitioning in mafic silicate liquids at high temperatures Cottrell, E.; Walker, D. Geochimica Et Cosmochimica Acta Mar 15 Volume: 70 Issue: 6 p.: 1565-1580 (2006) DOI 10.1016/j.gca.2005.11.021

Core/mantle-like interactions in an electric field Kavner, A.; Walker, D. Earth and Planetary Science Letters Aug 15 Volume: 248 Issue: 1-2 p.: 316-329 (2006) DOI 10.1016/j.epsl.2006.05.033

Experimental partitioning of uranium between liquid iron sulfide and liquid silicate: Implications for radioactivity in the Earth's core Wheeler, K. T.; Walker, D.; Fei, Y. W.; Minarik, W. G.; McDonough, W. F. Geochimica Et Cosmochimica Acta Mar 15 Volume: 70 Issue: 6 p.: 1537-1547 (2006) DOI 10.1016/j.gca.2005.11.023

Core-mantle chemical issues Walker, D. Canadian Mineralogist Oct Volume: 43 p.: 1553-1564 (2005)

Halite-sylvite thermoconsolution Walker, D.; Verma, P. K.; Cranswick, L. M. D.; Clark, S. M.; Jones, R. L.; Buhre, S. American Mineralogist Jan Volume: 90 Issue: 1 p.: 229-239 (2005)

Experimental partitioning of Tc, Mo, Ru, and Re between solid and liquid during crystallization in Fe-Ni-S Lazar, C.; Walker, D.; Walker, R. J. Geochimica Et Cosmochimica Acta Feb Volume: 68 Issue: 3 p.: 643-651 (2004)

Halite-sylvite thermoelasticity Walker, D.; Verma, P. K.; Cranswick, L. M. D.; Jones, R. L.; Clark, S. M.; Buhre, S. American Mineralogist Jan Volume: 89 Issue: 1 p.: 204-210 (2004)

Thermal equations of state for B1 and B2 KCl Walker, D.; Cranswick, L. M. D.; Verma, P. K.; Clark, S. M.; Buhre, S. American Mineralogist Jul Volume: 87 Issue: 7 p.: 805-812 (2002)

Synthesis and thermal decomposition of tetragonal RbClO4 and volume of fluid O-2 from 2 to 9 GPa Walker, D.; Hughes, G.; Cranswick, L. M. D.; Clark, S. M.; Buhre, S. Geochemistry Geophysics Geosystems Oct 11 Volume: 2 p.: art. no.-2001GC000154 (2001)

Core participation in mantle geochemistry: Geochemical Society Ingerson Lecture, GSA Denver, October 1999 Walker, D. Geochimica Et Cosmochimica Acta Sep Volume: 64 Issue: 17 p.: 2897-2911 (2000)

Rapid methods for the calibration of solid-state detectors Walker, D.; Clark, S. M.; Jones, R. L.; Cranswick, L. M. D. Journal of Synchrotron Radiation Jan 1 Volume: 7 p.: 18-21 (2000)