Department of Earth & Environmental Sciences


Stephen A. Nelson
Associate Professor  
Dept. Earth & Env. Sciences
Tulane University 
New Orleans, LA 70118
Room 208 Blessey Hall

Phone: (504) 862-3194
Fax: (504) 865-5199

- What happened during Hurricane Katrina - Field Trips

Grand Canyon Colloquium 2009 Photos
Grand Canyon Colloquium 2010 Photos

Grand Canyon Colloquium 2011 Photos

Grand Canyon Colloquium 2012 Photos
Grand Canyon Colloquium 2012 Videos

Grand Canyon Colloquium 2013 Photos
Grand Canyon Colloquium 2013 Videos

Grand Canyon Colloquium 2014 Photos & Videos

Grand Canyon Colloquium 2015 Photos & Videos

Grand Canyon Colloquium 2016 Photos and Videos

Grand Canyon Colloquium 2017 Photos and Videos


University of California, Berkeley, A.B. 1973
University of California, Berkeley, M.S. 1975
University of California, Berkeley, Ph.D. 1979

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Research Interests

  • Volcanology
  • Igneous Petrology
  • Mexican Volcanic Belt
  • Geological Hazards
  • Thermodynamics

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Courses Taught

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Recent Publications


    Nelson, S.A., Myths of Katrina: Field Notes from a Geoscientist. The Minnesota Review, 2015(84): p 60-68, 2015.

    Nelson, S.A. and Leclair, S.F., Katrina’s unique splay deposits in a New Orleans neighborhood. GSA Today, 16:4-9, 2006.

    Nelson, S.A.  E. Gonzalez-Caver and T.K. Kyser. Constrains on the origin of alkaline and calc-alkaline magmas from the Tuxtla volcanic field, Veracruz, Mexico. Contr. Mineral. Petrol. 122:191-211. 1995.

    Nelson, S.A. and E. Gonzalez-Caver. Geology and K-Ar dating of the Tuxtla volcanic field, Veracruz, Mexico. Bull. Volcanology. 55:85-96, 1992.


    Verma, S.P., and S.A. Nelson. Isotopic and trace-element constraints on the origin and evolution of calc-alkaline and alkaline magmas in the northwestern portion of the Mexican Volcanic Belt. J. Geophys. Res. 94:4531-44, 1989.





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