Professor of Geology


  • B.A., Carleton College, 1984
  • M.Sc., University of Arizona 1987
  • Ph.D., University of California-Santa Barbara, 1995

Curriculum vitae

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Current Projects

Collaborative Research: A systems approach to understanding the Ross Ocean and ice Shelf Environment, and Tectonic setting Through Aerogeophysical surveys and modeling (ROSETTA-ICE)

Emplacement mechanism, paleoenvironment of formation, and lithification/fluid migration history of Neoproterozoic injectites and source rocks, Colorado Front Range

Brittle faults and kinematics of the Laramide Orogeny (Colorado Front Range; Bighorn Mountains, WY; and region)

Development of geospatial resources and digital geological maps for Antarctica, via the SCAR GeoMAP project and joint efforts with GNS Science-New Zealand and the Polar Geospatial Center that emphasize undergraduate research mentoring and GIS skills development

West Antarctic rift system and Cretaceous tectonics of Gondwanaland (field studies in West Antarctica and in New Zealand)

Recent Publications

Siddoway, C. (invited chapter), Geology of West Antarctica, in Kleinschmidt, G., ed., Geology of the Antarctic Continent, Stuttgart: Gebrüder Borntraeger Verlagsbuchhandlung, under editorial management, 2016.

McFadden, R.R., Teyssier, C., Siddoway, C.S., Cosca, M., and Fanning, C.M., 2015, Mid-Cretaceous oblique rifting of West Antarctica: emplacement and rapid cooling of the Fosdick Mountains migmatite-cored gneiss dome, Lithos, doi:10.1016/j.lithos.2015.07.005

Yakymchuk, C., Brown, C.R., Brown, M., Siddoway, C.S., Fanning, C.M. and Korhonen, F.J., 2015, Paleozoic evolution of West Marie Byrd Land, West Antarctica: Geological Society of America Bulletin, doi:10.1130/B31136.1

Siddoway, C. and Gehrels, G.E., 2014, Basement-hosted sandstone injectites of Colorado: A vestige of the Neoproterozoic revealed through detrital zircon provenance analysis, Lithosphere, doi: 10.1130/L390.1,

Siddoway, C.S., Myrow P.,  and Fitz Díaz, E., 2013, Strata, structures and enduring enigmas:  A 125th Anniversary appraisal of Colorado Springs geology, in Abbott, L. and Hancock, G.S. (eds.), Geological Society of America Field Guides, v. 33, Ch. 13, doi:10.1130/2013.0033(13).

Yakymchuk, C., Siddoway, C.S., Brown, M., and Fanning, C.M., 2013, Anatectic reworking and differentiation of continental crust along the active margin of Gondwana: a zircon Hf–O perspective from West Antarctica, in Harley et al. (eds.), Antarctica and Supercontinent Evolution, Geological Society of London Special Publication 383, doi: 10.1144/SP383.7.

Levine, Jamie, Mosher, S.F. and Siddoway, C.S., 2013, Relationship between syndeformational partial melting and crustal-scale magmatism and tectonism across the Wet Mountains, central Colorado, Lithosphere, v. 5 no. 5 p. 456-476, doi: 10.1130/L287.1.

Brown, M., Korhonen, F.J. and Siddoway, C.S., 2011, Organizing Melt Flow Through the Crust, Mineralogical Association of Canada, Elements, v. 7, 261–266.

Siddoway, C.S., 2010, Microplate motion, Nature Geoscience (April  11), v. 3 (4), 225 – 226. doi:10.1038/ngeo835.

McFadden R., C. S. Siddoway, C. Teyssier, and C. M. Fanning, 2010, Cretaceous oblique extensional deformation and magma accumulation in the Fosdick Mountains migmatite-cored gneiss dome, West Antarctica, Tectonics, v. 29, TC4022, doi:10.1029/2009TC002492.

Jones III, James V., Siddoway, Christine S.  and Connelly, James N., 2010, Characteristics and implications of ca. 1.4 Ga deformation across a Proterozoic mid-crustal section, Wet Mountains, Colorado, USA, Lithosphere, v. 2, p. 119-135, doi:10.1130/L78.1.

Courses Taught

GY100   In Extinction’sEmbrace: Reading Contemporary Nonfiction from a Geological Standpoint

GY140   Physical Geology

GY210   Fundamental Geological Methods and Rocky Mountain Evolution

GY250   Topics in Geology: Rocks and Ruins: Natural Catastrophes & Mediterranean Culture

GY250   Topics in Geology: Introduction to Geodesign

GY313   Metamorphic Petrology

GY315   Structural Geology 2016

GY316   Field analysis of Geological Structures

GY345   Regional Studies in Geology

GY400   Senior Seminar: Digital Mapping in Earth Sciences — for Society

GY405   Research Topics in Geology (individual student research)

More on Teaching and Research Mentoring

Research Interests:   Structural and metamorphic geology; Gondwana tectonics; gneiss domes; high temperature metamorphism and role of melt in deformation of migmatites; sandstone injectites.

Geology of Antarctica: Antarctica research page

Siddoway family:     Colorado College has another professor by the name of Siddoway, and you guessed it, the two of us are married. Mike teaches Mathematics and serves as Associate Dean of the Faculty. Maybe you’ve read through this whole page and are utterly confused because you are seeking the Prof. Siddoway whose recent work is in divisibility theory of arithmetical rings! To reach Mike, email him at


Christine with field assistant, Pearl