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Ryan C. Ewing
Halbouty 261

Ryan C. Ewing

Department of Geology and Geophysics

3115 TAMU

College Station, TX 77843


PhD – Geology – University of Texas at Austin, 2009

MS – Geology – University of Texas at Austin, 2004

BA – Geology - The Colorado College, 1998


Sedimentology and Stratigraphy

Field Sedimentary Processes

Field Camp

Ryan C. Ewing

Associate Professor

Research Interests

Ryan’s research aims to understand the evolution of landscapes and the sedimentary record through physical processes operating at the surface-atmosphere interface of Earth, mars and Titan (a moon of saturn). His current research themes include (1) development of patterns in wind-blown landscapes and the interpretation of these patterns as records of climate, (2) bedform self-organization in the rock record, and (3) the role of wind-blown systems at critical climate transitions in Earth’s history. Ryan primarily uses field work and geospatial data for his research. He has active field work in Texas, New Mexico, Utah and South Australia.

Additional Notes

Ryan has PhD positions open in his research group for students interested in wind-blown sedimentary 

Selected Publications

22. Moore, J.M., Howard, A.D., Schenk, P.M., McKinnon, W.B., Papparlardo, R.T., Ewing, R.C. et al. Geology before Pluto: Pre-encounter considerations: Icarus, In Press.

21. Ewing, R.C., Eisenman, I., Lamb, M.P., Maloof, A.C., Poppick, L., and Fischer, W.W., 2014. New constraints on equatorial temperatures during a Late Neoproterozoic snowball Earth glaciation: Earth and Planetary Science Letters. 406, 110-122.

20.  Baitis, E., Kocurek, G., Smith, V., Mohrig, D., Ewing, R.C., Peyret, A.-P.B., 2014. Definition and origin of the dune-field pattern at White Sands, New Mexico. Aeolian Res. 15, 269–287.

19.  Milliken, R. E., Ewing, R. C., Fischer, W. W. & Hurowitz, J. Wind-blown sandstones cemented by sulfate and clay minerals in Gale Crater, Mars. Geophys. Res. Lett. 41, 1149–1154 (2014).

18.  Rose, C. V., Maloof, A.C., Schoene, B., Ewing, R.C. et al. The End-Cryogenian Glaciation of South Australia. Geosci. Canada 40, 256–293 (2013).

17.  Silvestro, S., Vaz, D. A., Ewing, R. C., Fenton, L. K., Rossi, A. P., Michaels, T. I., Flahaut, J., et al. (2013). Pervasive aeolian activity along Curiosity’s traverse in Gale Crater, Mars. Geology, 41, 479–482.

16.  Fenton, L., Ewing, R. C., Bridges,, N., & Lorenz, R. (2012). Extraterrestrial aeolian landscapes. In Schroder (Editor in Chief). N. Lancaster, A. Baas, & D. Sherman (Eds.), Treatise in Geomorphology: Aeolian Geomorphology (pp. 287–312). San Diego: Academic Press.

15.  Kocurek, G. and Ewing, R.C., (2012) Source-To-Sink: An Earth/Mars Comparison of Boundary Conditions for Aeolian Dune Systems. J. Grotzinger and R. Milliken (eds.), Sedimentary Geology on Mars. SEPM Special Publication. ISBN: 978-1-56576-312-8

14.  Jerolmack, D.J., Ewing, R.C., Falcini, F., Martin, R.L., Masteller, C., Phillips, C., Reitz, M.D., Buynevich, I. (2012) Internal boundary layer model for the evolution of desert dune fields.  Nature Geoscience, 5, p. 206-209. doi:10.1038/ngeo1381

13. Le Gall, A., Hayes, A.G., Ewing, R.C., Janssen, M.A., Radebaugh, J., Savage, C., Encrenaz, P., The Cassini Radar Team (2012) Latitudinal and altitudinal controls of Titan’s dune field morphometry. Icarus, 217, 231-242. doi: 10.1016/j.icarus.2011.10.024

12. Reitz, M.D., Jerolmack, D.J., Ewing, R.C., Martin, R. (2010) Barchan-parabolic dune pattern transition from vegetation stability threshold. Geophysical Research Letters, 37, L19402, doi: 10.1029/2010GL044957.

11. Ewing, R.C., Peyret, A.-P.B, Kocurek, G, and Bourke, M., (2010) Dune-field pattern formation and recent transporting winds in the Olympia Undae Dune Field, north polar region of Mars. JGR- Planets, 115, E08005, doi: 10.1029/2009JE003526, 2010.                    

10. Ewing, R.C. and Kocurek, G., (2010) Aeolian dune interactions and dune-field pattern formation: White Sands, New Mexico. Sedimentology, 57, 1199-1219.

9. Ewing, R.C. and Kocurek, G. (2010) Aeolian dune-field pattern boundary conditions. Geomorphology, 114, 175-187.

8. Kocurek, G., Ewing, R.C., Mohrig, D., (2010) How do bedform patterns arise? New views on the role of bedform interactions within a set of boundary conditions. Earth Surface Processes and Landforms, 35, 51-63.

7. Szynkiewicz, A., Ewing, R.C., Moore, C.H., Gamoclija, M., Pratt, L.M., Bustos, D., (2010), Origin of terrestrial gypsum dunes – implications for Martian gypsum-rich dunes of Olympia Undae. Geomorphology, 121, 69-83.

6.  Bourke, M.C., Ewing, R.C., McGowan, H.A., Finnegan, D., (2009) Sand dune movement in Victoria Valley Antarctica. Geomorphology, 109, 148-160.

5.  Derickson, D., Kocurek, G., Ewing, R.C., Bristow, C., 2008, Origin of a complex and spatially diverse dune-field pattern, Algodones, southeastern California. Geomorphology, 99, 186-204.

4.  Kocurek, G., Carr, M., Ewing, R.C., Havholm, K.G., Nugar, Y.C., Singhvi, A.K., 2007, White Sands Dune Field, New Mexico: Age, dune dynamics and recent accumulations. Sedimentary Geology, 197, 313-331. 

3.  Beveridge, C., Kocurek, G., Ewing, R.C., Lancaster, N., Mortheka, P., Singhvi, A.K., Mahan, S., 2006, Development of spatially diverse and complex dune-field patterns:  Gran Desierto Dune Field, Sonora,               Mexico. Sedimentology, 53, 1391-1409.

2.  Ewing, R.C., Kocurek, G., and Lake, L.L., 2006, Pattern analysis of dune-field parameters. Earth Surface      Processes and Landforms, 31, 1176-1191.

1.  Kocurek, G. and Ewing R.C., 2005, Aeolian dune field self-organization – implications for the formation of simple versus complex dune-field patterns. Geomorphology, 72, 94-105.


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