Alice Baldridge


Professional Overview: 

I believe in creating inclusive, respectful, and authentic relationships with my students. My job as a scientist is to discover the rules and patterns that govern and shape our universe and then to trust the process of science. As an educator I encourage my students to do the same. Scientists claim to know the answers to remarkable questions about the universe. We as scientists and members of the community place what is true over what we want, hope, or believe to be true. The discussion of these topics builds an intellectual, social, and spiritual community in the classroom, supporting the mission of the college.

My basic goals in teaching are to: 1) ensure that basic concepts that are part of the curriculum are learned and reinforced, 2) convey how such information is relevant to the field of Environmental and Earth Sciences and the broader natural world, 3) raise excitement, appreciation and trust of the scientific process through experience and 4) provide insight about scientific practice and thought to develop strong observational and critical thinking skills in all aspects of my students lives.

“…we have to realize that a true ecological approach always becomes a social approach; it must integrate questions of justice in debates on the environment, so as to hear both the cry of the earth and the cry of the poor.”  Laudato Si

Many of my students are drawn to the environmental sciences because they want to make a positive impact on our world. At Saint Mary’s, our Catholic tradition encourages our students to examine what it means to be a good person and EES students in particular recognize the environment as a Common Good. The Saint Mary’s College mission recognized that “the intellectual and spiritual journeys of the human person to be inextricably connected.” My students have a deep intellectual understanding of the “cries of the earth” and through their spiritual journey they also recognize the “cries of the poor.” We as a Catholic community are stewards of our environment and we are all called to be leaders in this stewardship. All of my efforts as director of the EES programs are directly and integrally tied to the mission of the College and continued student stewardship of the Earth long after they graduate. 

School of Science » Environmental and Earth Science
SMC Email Address: 
Contact Information: 

Brousseau Hall - 112

Phone: 925-631-8140





PhD Geological Sciences, Arizona State University, May 2008

M.S. Geology, Arizona State University, May 2002

B.S. Earth Science, University of California, Santa Cruz, June 1998

Courses Taught

  students on field trip


EES 40 Introduction to Geology

EES 50 Historical Geology

EES 100 Hydrology

EES 110 Remote Sensing and GIS

EES 150 Environmental and Physical Geology of the Parks

EES 160 Earth Materials

EES 180 Sedimentology





Michalski, J. R., P. B. Niles, J. Cuadros, and A. M. Baldridge (2013), Multiple working hypotheses for the formation of compositional stratigraphy on Mars: Insights from the Mawrth Vallis region, Icarus, 226, 816-840.

Baldridge, A. M., M. D. Lane, and C. S. Edwards (2013), Searching at the right time of day: Evidence for aqueous minerals in Columbus crater with TES and THEMIS data, J. Geophys. Res. Planets, 118, 10.1029/2012JE004225

Hulley, G., A Baldridge, Validation of Thermal Infrared (TIR) Emissivity Spectra Using Pseudo-invariant Sand Dune Sites (2013). Thermal Infrared Remote Sensing, 515-527

Thomson, B.J., N.T. Bridges, R. Milliken, A. Baldridge, S.J. Hook, J.K. Crowley, G.M. Marion, C.R. de Souza Filho, A.J. Brown, C.M. Weitz, Constraints on the origin and evolution of the layered mound in Gale Crater, Mars using Mars Reconnaissance Orbiter data, Icarus, Volume 214, Issue 2, August 2011, Pages 413-432

Wray, J. J., R. E. Milliken, C. M. Dundas, G. A. Swayze, J. C. Andrews-Hanna, A. M. Baldridge, M. Chojnacki, J. L. Bishop, B. L. Ehlmann, S. L. Murchie, R. N. Clark, F. P. Seelos, L. L. Tornabene, and S. W. Squyres, 2011. Columbus crater and other possible groundwater- fed paleolakes of Terra Sirenum, Mars, J. Geophys. Res., 116, E01001, doi:10.1029/2010JE003694

Brown, A.J., S.J. Hook, A.M. Baldridge, J.F. Crowley, N.T. Bridges, B.J. Thomson, G.M. Marion, C.R. de Souza Filho, J.L. Bishop, 2010. Hydrothermal formation of Clay-Carbonate alteration assemblages in the Nili Fossae region of Mars, Earth and Planetary Science Letters, 297, 1-2, 174-182.

Hulley, G.C., S.J. Hook, A.M. Baldridge, Investigating the effects of soil moisture on thermal infrared land surface temperature and emissivity using satellite retrievals and laboratory measurements, Remote Sensing of Environment, Volume 114, Issue 7, 15 July 2010, Pages 1480-1493

Baldridge, A.M., S.J. Hook, J.S. Kargel, G.M. Marion, J.L. Michalski, C.R. de Souza Filho, J.K. Crowley, N.T. Bridges, A.J. Brown, B. Ribeiro da Luz, 2009. Contemporaneous Deposition of Phyllosilicates and Sulfates; Using Australian Acidic Saline Lake Deposits to Describe Geochemical Variability on Mars. Geophysical Research Letters, 36, L19201, doi:10.1029/2009GL040069

Baldridge, A.M., P.R. Christensen, 2009. A laboratory technique for the thermal infrared emission measurement of hydrated minerals. Applied Spectroscopy, 63, 6, 678-688.

Baldridge, A. M., S. J. Hook, C. I. Grove, and G. Rivera, 2009. The ASTER Spectral Library Version 2.0, Remote Sens Environ, 113(4), 711-715.

Hulley, G.L., A.M. Baldridge, S.J. Hook, 2009. Validation and enhancements to the North American ASTER Land Surface Emissivity Database (NAALSED), Remote Sensing of Environment, 13, 10, 2224-2233.

Marion, G.M. J.S. Kargel, B.J. Thomson, J.K. Crowley, A.M. Baldridge, N.T. Bridges, A.J. Brown, S.J. Hook, B. Ribeiro da Luz, C.R. de Souza Filho, 2009. Australian acidic playa lakes as analogues for Mars. Geochim. Cosmochim. Acta 73, 3493-3511.

Hulley, G.L., S.J. Hook, A.M. Baldridge, 2008. The ASTER land surface emissivity database of California and Nevada, Geophysical Research Letters, 35,13, L13401.

Osterloo, M.M., V. E. Hamilton, J.L. Bandfield, T. D. Glotch, A.M. Baldridge, P. R. Christensen, L.L Tornabene, F. S. Anderson, 2008. Chloride-bearing materials in the southern highlands of Mars, Science, 319, 1651-1654.

Stockstill, K.R., J.E. Moersch, S.W. Ruff, A.M. Baldridge and J.D. Farmer, 2005. Thermal Emission Spectrometer hyperspectral analyses of proposed paleolake basins on Mars: No evidence for in-place carbonates, Journal of Geophysical Research, 110, E10004.

Baldridge, A.M. and W. M. Calvin, 2004. Hydration of the Martian coarse-grained hematite exposures: Implications for their origin and evolution. Journal of Geophysical Research, 109, E04S90.

Baldridge, A.M., J.D. Farmer and J.E. Moersch, 2004. Mars remote sensing analog studies in Badwater Basin, Death Valley, CA. Journal of Geophysical Research, 109, E12006.


Scholarly Interests: 


  • Remote Sensing
  • Spectroscopy
  • Water/Water Resources
  • Sediments in Aqueous Environments
  • Past Aqueous Environments on Mars
  • Mineralogy of Evaporite (Dry Lake) Deposits
  • Diversity and Inclusion in the Outdoors and STEM