Gerilyn S. "Lynn" Soreghan

Brandt Professor

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

Office: SEC 868
Phone: 405-325-4482
Fax: 405-325-3140
E-mail: lsoreg@ou.edu

Areas of Interest

Sedimentology, Stratigraphy, and Paleoclimate

Research

Earth's "deep-time" sedimentary record houses climate states dramatically different from our modern or recent world. 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 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, and has thus captured my interest. Working with students and colleagues, my current research includes (1) investigating hypotheses of tropical glaciation and orogenic collapse in the enigmatic Ancestral Rocky Mountains, (2) gauging dustiness of the late Paleozoic atmosphere and possible effects on the biosphere and carbon cycling, (3) the origin and implications of loess, and (4) high-frequency, glacial-interglacial climate change. These "core" projects have spurred me into forays on the Cenozoic geomorphic evolution of the Uncompahgre Plateau, and attempts to gauge weathering as a climate indicator. For more details, please visit my research personal webpage.

Courses Taught

Introductory Geology (Honors)

Depositional Systems and Stratigraphy

Earth's Past Climate

Sedimentology / Stratigraphy Seminar

Paleozoic Carbonates and Sequence Stratigraphy

Faculty Web Page

http://faculty-staff.ou.edu/S/Gerilyn.S.Soreghan-1/About_Me.html

Antarctica Blog January 2010

http://faculty-staff.ou.edu/S/Gerilyn.S.Soreghan-1/Blog/MyBlog/Blog/Blog.html

Selected Publications

Soreghan, G.S., Soreghan, M.J., Poulsen, C.J., Young, R.A., Eble, C.F., Sweet, D.E., and Davogustto, O.C., 2008, Anomalous cold in the Pangaean tropics: Geology, v. 36, p. 659-662.
Soreghan, G.S., Soreghan, M.J., and Hamilton, M.A., 2008, Origin and paleoclimatic significance of tropical silt in the Late Paleozoic icehouse: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 268, p. 234-.259.
Soreghan, M.J., Soreghan, G.S., and Hamilton, M.A., 2008, Glacial-interglacial shifts in atmospheric circulation of western tropical Pangaea: Palaeogeography, Palaeoclimatology, Palaeoecology, p. 260-272.
Sweet, D.E., and Soreghan, G.S., 2008, Polygonal cracking in coarse clastics records cold temperatures in the equatorial Fountain Formation (Pennsylvanian-Permian, Colorado): Palaeogeography, Palaeoclimatology, Palaeoecology, v. 268.
Moore, K.D., Soreghan, G.S., and Sweet, D.E., 2008, Stratigraphic and structural relations in the proximal Cutler Formation of the Paradox basin: Implications for timing of movement on the Uncompahgre front: Mountain Geologist, v. 45, p. 49-68.
Soreghan, G.S., Moses, A.M., Soreghan, M.J., Hamilton, M.A., Fanning, C.M., and Link, P.K., 2007, Palaeoclimatic inferences from upper Palaeozoic siltstone of the Earp Formation and equivalents, Arizona-New Mexico (USA). Sedimentology, v. 54, p. 701-719.
Soreghan, G.S., Sweet, D.E., Marra, K.R., Eble, C.F., Soreghan, M.J., Elmore, R.D., Kaplan, S.A., and Blum, M.D., 2007, An exhumed late Paleozoic canyon in the Rocky Mountains. Journal of Geology, v. 115, p. 473-481.
Soreghan, M.J. and Soreghan, G.S., 2007, Whole-rock geochemistry of upper Paleozoic loessite, western Pangaea: Implications for paleo-atmospheric circulation. Earth and Planetary Science Letters, v. 255, p. 117-132.
Montanez, I.P. and Soreghan, G.S., 2006, Earth’s fickle climate: Lessons learned from deep-time ice ages: Geotimes, v. 51, p. 24-27.
Soreghan, G.S., 2005, Lessons from Earth’s deep time: The Chronicle of Higher Education, v. Section B, p. B10 [July 15, 2005].
Soreghan, G.S., 2004, Déjá-vu all over again: Deep-time (climate) is here to stay: Palaios, v. 19, p. 1-2.
Tramp, K.L., Soreghan, G.S., and Elmore, R.D., 2004, Paleoclimatic inferences from paleopedology and magnetism of the Permian Maroon Formation loessite (Colorado, USA): Geological Society of America Bulletin, v. 116, p.671-686.

	School of Geology and Geophysics
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"Lynn" Soreghan Brandt Professor Ph.D., 1992 University of Arizona B.S., 1986, University of California, Los Angeles Office: SEC 868 Phone: 405-325-4482 Fax: 405-325-3140 E-mail: lsoreg@ou.edu Areas of Interest Sedimentology, Stratigraphy, and Paleoclimate Research Earth's "deep-time" sedimentary record houses climate states dramatically different from our modern or recent world. 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 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, and has thus captured my interest. Working with students and colleagues, my current research includes (1) investigating hypotheses of tropical glaciation and orogenic collapse in the enigmatic Ancestral Rocky Mountains, (2) gauging dustiness of the late Paleozoic atmosphere and possible effects on the biosphere and carbon cycling, (3) the origin and implications of loess, and (4) high-frequency, glacial-interglacial climate change. These "core" projects have spurred me into forays on the Cenozoic geomorphic evolution of the Uncompahgre Plateau, and attempts to gauge weathering as a climate indicator. For more details, please visit my research personal webpage. Courses Taught Introductory Geology (Honors) Depositional Systems and Stratigraphy Earth's Past Climate Sedimentology / Stratigraphy Seminar Paleozoic Carbonates and Sequence Stratigraphy Faculty Web Page http://faculty-staff.ou.edu/S/Gerilyn.S.Soreghan-1/About_Me.html Antarctica Blog January 2010 http://faculty-staff.ou.edu/S/Gerilyn.S.Soreghan-1/Blog/MyBlog/Blog/Blog.html Selected Publications Soreghan, G.S., Soreghan, M.J., Poulsen, C.J., Young, R.A., Eble, C.F., Sweet, D.E., and Davogustto, O.C., 2008, Anomalous cold in the Pangaean tropics: Geology, v. 36, p. 659-662. Soreghan, G.S., Soreghan, M.J., and Hamilton, M.A., 2008, Origin and paleoclimatic significance of tropical silt in the Late Paleozoic icehouse: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 268, p. 234-.259. Soreghan, M.J., Soreghan, G.S., and Hamilton, M.A., 2008, Glacial-interglacial shifts in atmospheric circulation of western tropical Pangaea: Palaeogeography, Palaeoclimatology, Palaeoecology, p. 260-272. Sweet, D.E., and Soreghan, G.S., 2008, Polygonal cracking in coarse clastics records cold temperatures in the equatorial Fountain Formation (Pennsylvanian-Permian, Colorado): Palaeogeography, Palaeoclimatology, Palaeoecology, v. 268. Moore, K.D., Soreghan, G.S., and Sweet, D.E., 2008, Stratigraphic and structural relations in the proximal Cutler Formation of the Paradox basin: Implications for timing of movement on the Uncompahgre front: Mountain Geologist, v. 45, p. 49-68. Soreghan, G.S., Moses, A.M., Soreghan, M.J., Hamilton, M.A., Fanning, C.M., and Link, P.K., 2007, Palaeoclimatic inferences from upper Palaeozoic siltstone of the Earp Formation and equivalents, Arizona-New Mexico (USA). Sedimentology, v. 54, p. 701-719. Soreghan, G.S., Sweet, D.E., Marra, K.R., Eble, C.F., Soreghan, M.J., Elmore, R.D., Kaplan, S.A., and Blum, M.D., 2007, An exhumed late Paleozoic canyon in the Rocky Mountains. Journal of Geology, v. 115, p. 473-481. Soreghan, M.J. and Soreghan, G.S., 2007, Whole-rock geochemistry of upper Paleozoic loessite, western Pangaea: Implications for paleo-atmospheric circulation. Earth and Planetary Science Letters, v. 255, p. 117-132. Montanez, I.P. and Soreghan, G.S., 2006, Earth’s fickle climate: Lessons learned from deep-time ice ages: Geotimes, v. 51, p. 24-27. Soreghan, G.S., 2005, Lessons from Earth’s deep time: The Chronicle of Higher Education, v. Section B, p. B10 [July 15, 2005]. Soreghan, G.S., 2004, Déjá-vu all over again: Deep-time (climate) is here to stay: Palaios, v. 19, p. 1-2. Tramp, K.L., Soreghan, G.S., and Elmore, R.D., 2004, Paleoclimatic inferences from paleopedology and magnetism of the Permian Maroon Formation loessite (Colorado, USA): Geological Society of America Bulletin, v. 116, p.671-686.