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Gerilyn S. Soreghan

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Gerilyn S. "Lynn" Soreghan

Gerilyn S. "Lynn" Soreghan

Director and Eberly Professor
David L. Boren Professor

Ph.D., 1992, University of Arizona
B.S., 1986, University of California, Los Angeles

Office: SEC 868

Faculty Page

Areas of Interest

Sedimentary Geology, Deep-Time Paleoclimate, Weathering


Earth's "deep-time" sedimentary record houses climate states dramatically different from our modern or recent worlds. My research is primarily field-based, but I collaborate with colleagues at OU and elsewhere in using geochemistry, geochronology, magnetism, and climate modeling as applied to the sedimentary record to refine our understanding of climate and linked processes. The late Paleozoic world (~300 My ago) captures my interest because it archives Earth's last great "icehouse" and collapse of that icehouse, glacial-interglacial climate swings like those of the recent, global mountain building that culminated in the Pangaean supercontinent, and perhaps the dustiest atmosphere in the planet's history. Working with students and colleagues, my current research includes (1) investigating hypotheses of equatorial alpine glaciation and orogenic (mountain) collapse in parts of the Central Pangaean Mountains, (2) gauging dustiness of the late Paleozoic atmosphere and possible effects on the biosphere and carbon cycling, (3) high-frequency, glacial-interglacial climate change, and (4) assessing physical and chemical weathering trends in various climate systems. For more details, please visit my personal webpage.

Courses Taught

Introductory Geology

Depositional Systems and Stratigraphy

Earth's Past Climate

Sedimentology / Stratigraphy Seminar

Paleozoic Carbonates and Sequence Stratigraphy

Selected Publications

Soreghan, G.S., Soreghan, M.J., and Heavens, N.G., 2019, Explosive volcanism as a key driver of the late Paleozoic ice age: Geology, https://doi.10.1130/G46349.1

Joo, Y.J., Elwood Madden, M.E., & Soreghan, G.S., 2018, Anomalously low chemical weathering in fluvial sediment of a tropical watershed (Puerto Rico). Geology, 1–4.

Smith, C., Soreghan, G.S., & Ohta, T., 2018, Scanning electron microscope (SEM) microtextural analysis as a paleoclimate tool for fluvial deposits: A modern test. Geological Society of America Bulletin, 1–17.

Trachtenberg, Z., et al., 2017, The Anthropocene biosphere: Supporting ‘Open Interdisciplinarity’ through blogging: Trends in Ecology & Evolution, v. 32, p. 1-3. Doi:10.1016/j.tree.2016.10.018

Pfeifer, L.S., Soreghan, G.S., Pochat, S., Van Den Driessche, J., & Thomson, S.N., 2016, Permian exhumation of the Montagne Noire core complex recorded in the Graissessac-Lodeve Basin, France. Basin Research, 1–14.

Sur, S., Owens, J. D., Soreghan, G. S., Lyons, T. W., Raiswell, R., Heavens, N. G., & Mahowald, N. M., 2015, Extreme eolian delivery of reactive iron to late Paleozoic icehouse seas. Geology, G37226.1–5.

Soreghan, G.S., Sweet, D.E., & Heavens, N.G., 2014, Upland Glaciation in Tropical Pangaea: Geologic Evidence and Implications for Late Paleozoic Climate Modeling. The Journal of Geology, 122(2), 137–163.

Soreghan, G.S., Soreghan, M.J., Poulsen, C., Young, R.A.., Eble, C., Sweet, D.E., & Davogustto, O., 2008, Anomalous Cold in the Pangaean Tropics. Geology, 36, 659–662.

Soreghan, M.J., Soreghan, G.S., & Hamilton, M.A., 2002, Paleowinds inferred from detrital-zircon geochronology of upper Paleozoic loessite, western equatorial Pangea. Geology, 30(8), 695–698.

Soreghan, G.S., Soreghan, M.J., & Hamilton, M., 2008, Origin and significance of loess in late Paleozoic western Pangaea: A record of tropical cold? Palaeogeography, Palaeoclimatology, Palaeoecology, 26.