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Tenure-Track Faculty

Headshot of Thomas Algeo

Thomas Algeo

Professor , A&S Geology

504 Geology-Physics Building

513-556-4195

Specialization in sedimentary geochemistry with applications to paleoceanographic and global systems analysis.  Research is directed along three broad themes: Environmental change at the Permian/Triassic boundary, the relationship of land plant evolution to weathering rate changes and global events during the Middle to Late Devonian, and the development of trace-metal redox proxies to study paleomarine systems.

Education

M.S., University of Georgia Athens, Georgia, 1985 (Geological Sciences)

Ph.D., University of Michigan Ann Arbor, Michigan, 1989 (Geological Sciences)

Research Support

12-2008 -11-2012 National Science Foundation/Sedimentary Geology & Paleobiology Collaborative Research: Chemostratigraphic analysis of Panthalassic and Tethyan Permian-Triassic boundary sections: Assessment of global paleoceanographic dynamics $255,000 Type:Grant

11-2006 -11-2007 Univ. of Cincinnati Research Council The Permo-Triassic boundary event: Assessment of global paleoceanographic dynamics $6,500 Type:Grant

Grant: #NSF-EAR-0618003 08-2006 -08-2008 National Science Foundation/Sedimentary Geology & Paleobiology Collaborative Research: Middle and Upper Devonian black shales: Testing the productivity-anoxia feedback and land plant-weathering rate hypotheses $190,000 Type:Grant

05-2005 -05-2006 Univ. of Cincinnati Research Council Testing the land plant-weathering rate hypothesis for Devonian marine anoxia and mass extinction events $6,500 Type:Grant

Grant: #NSF-EAR-0310072 08-2003 -08-2005 National Science Foundation, Geology & Paleontology Terrestrial carbon sequestration in Devonian-Mississippian anoxic basins: Determining the relative importance of higher plants to organic accumulation in black shales Role:co-PI $179,000 (UC $14,100) Type:Grant

06-1995 -09-1995 Exxon Research Production Company Sequence stratigraphy of Upper Permian Glorieta Formation, Monahans Field, West Texas $7,500 Type:Grant

06-1993 -06-1994 UC University Research Council Microstratigraphic and geochemical analysis of Devono-Mississippian black shales of the Appalachian Basin: A high-resolution record of solar-modulated climatic cyclicity? $4,900 Type:Grant

02-1993 -02-1994 National Academy of Sciences, Project Development Grant Estimating Paleozoic eustatic elevations from paleogeographic and hypsometric data $1,700

06-1992 -06-1993 University Research Council Quantifying stratigraphic completeness: A probabilistic approach using paleomagnetic data $3,935 Type:Grant

1991 -1994 University of Cincinnati, Faculty Start-Up Award $60,000 Type:Grant

1984 -1987 National Science Foundation Graduate Fellowship $75,000

Grant: #EAR-0618003 Investigators:Algeo, Thomas 08-15-2006 -07-31-2010 National Science Foundation Middle and Upper Devonian Black Shales: Testing the Productivity-Anoxia Feedback and Land Plant-Weathering Rate Hypotheses Role:PI $189,999.00 Closed Level:Federal

Grant: #UKRF-4-67137-04-102 Investigators:Algeo, Thomas 09-01-2003 -07-31-2005 National Science Foundation Terrestrial Carbon Sequestration in Devonian-Mississippian Anoxic Basins Role:PI $14,070.00 Closed Level:Federal

Grant: #EAR-0745574 Investigators:Algeo, Thomas 04-01-2009 -03-31-2014 National Science Foundation Collaborative Research: Permian-Triassic Boundary Paleoceanographic Dynamics Role:PI $266,649.00 Active Level:Federal

Grant: #EAR-1053449 Investigators:Algeo, Thomas 06-01-2011 -05-31-2014 National Science Foundation Collaborative Research: Integrated Paleoceanographic Analysis of the Late Paleozoic Midcontinent Sea Role:PI $74,990.00 Active Level:Federal

Grant: #EAR-1229114 Investigators:Algeo, Thomas; Crowley, Brooke; Diefendorf, Aaron; Townsend-Small, Amy 09-15-2012 -08-31-2015 National Science Foundation Acquisition of Stable Isotope Instrumentation for Biogeochemistry Research and Teaching at the University of Cincinnati Role:Collaborator $400,000.00 Active Level:Federal

Grant: #OBR 990 Investigators:Algeo, Thomas; Crowley, Brooke; Diefendorf, Aaron; Townsend-Small, Amy 07-01-2012 -06-30-2014 Ohio Board of Regents Acquisition of Stable Isotope Instrumentation for Biogeochemistry Research and Teaching at the University of Cincinnati Role:Collaborator $85,714.00 Active Level:State of Ohio

Grant: #EAR-1229114 Investigators:Algeo, Thomas; Crowley, Brooke; Diefendorf, Aaron; Townsend-Small, Amy 09-15-2012 -08-31-2015 National Science Foundation Acquisition of Stable Isotope Instrumentation for Biogeochemistry Research and Teaching at the University of Cincinnati Role:Collaborator $400,000.00 Active Level:Federal

Grant: #OBR 990 Investigators:Algeo, Thomas; Crowley, Brooke; Diefendorf, Aaron; Townsend-Small, Amy 07-01-2012 -06-30-2014 Ohio Board of Regents Acquisition of Stable Isotope Instrumentation for Biogeochemistry Research and Teaching at the University of Cincinnati Role:Collaborator $85,714.00 Active Level:State of Ohio

Grant: #14-304 / NNX13AJ1IG Investigators:Algeo, Thomas 09-01-2013 -08-31-2015 National Aeronautics and Space Administration Uranium Isotope Variations in Carbonates: Validating A New Paleoredox Proxy Role:PI $37,349.00 Awarded Level:Federal

Grant: #EAR-1733977 Investigators:Algeo, Thomas 09-01-2017 -08-31-2020 National Science Foundation Collaborative Research: Tracking middle to late Paleozoic global-ocean redox conditions using U isotopes in marine carbonates Role:PI $130,812.00 Active Level:Federal

Abbreviated Publications
Book Chapter

Brett, C.E., Algeo, T.J., and McLaughlin, P.I., 2003, Approaches in High-Resolution Stratigraphic Paleontology. in eds. Harries, P.J., Use of event beds and sedimentary cycles in high-resolution stratigraphic correlation of lithologically repetitive successions: The Upper Ordovician Kope Formation of northern Kentucky and southern Ohio: Amsterdam: Kluwer, p. 315-350.

Peer Reviewed Publications

Weyer, S., Anbar, A.D., Gerdes, A., Gordon, G., Algeo, T.J., Boyle, E.A., 2008, Natural fractionation of 238U/235U: Geochimica et Cosmochimica Acta, v. 72, p. 345-359.

Algeo, T.J., Shen, Y., Zhang, T., Lyons, T.W., Bates, S.M., Rowe, H., and Nguyen, T.K.T., 2008, Association of 34S-depleted pyrite layers with negative carbonate d13C excursions at the Permian/Triassic boundary: Evidence for upwelling of sulfidic deep-ocean watermasses: Geochemistry Geophysics Geosystems, v. 9, p. doi:10.1029/2007GC001823.

Pope, M.C., Algeo, T.J., Saltzman, M., and Bartley, J.K., 2007, Special issue on Neoproterozoic-Paleozoic ocean chemistry: Palaeogeography Palaeoclimatology Palaeoecology, v. 256, p. 1-4.

Algeo, T.J., and Ingall, E.D, 2007, Sedimentary Corg:P ratios, paleocean ventilation, and Phanerozoic atmospheric pO2: Palaeogeography Palaeoclimatology Palaeoecology, v. 256, p. 130-155, doi:10.1016/j.palaeo.2007.02.029.

Algeo, T.J., Lyons, T.W., Blakey, R.C., and Over, D.J., 2007, Hydrographic conditions of the Devono-Carboniferous North American Seaway inferred from sedimentary Mo-TOC relationships: Palaeogeography Palaeoclimatology Palaeoecology, v. 256, p. 204-230, doi:10.1016/j.palaeo.2007.02.035.

Turgeon, S., Creaser, R., and Algeo, T.J., 2007, Re-Os depositional ages and seawater Os estimates for the Frasnian-Fammenian Boundary. Earth and Planetary Science Letters, v. 261, p. 649-661.

Algeo, T., Lehrmann, D., Orchard, M., Tong, J., 2007, The Permian-Triassic boundary crisis and Early Triassic biotic recovery: Palaeogeography Palaeoclimatology Palaeoecology, v. 252, p. 1-3, doi:10.1016/j.palaeo.2006.11.030.

Algeo, T.J., Ellwood, B.B., Nguyen, T.K.T., Rowe, H., and Maynard, J.B., 2007, The Permian-Triassic boundary at Nhi Tao, Vietnam: Evidence for recurrent influx of sulfidic watermasses to a shallow-marine carbonate platform: Palaeogeography Palaeoclimatology Palaeoecology, v. 252, p. 304-327, doi:10.1016/j.palaeo.2006.11.055.

Algeo, T.J., Hannigan, R., Rowe, H., Brookfield, M., Baud, A., Krystyn, L., and Ellwood, B.B., 2007, Sequencing events across the Permian-Triassic boundary, Guryul Ravine (Kashmir, India): Palaeogeography Palaeoclimatology Palaeoecology, v. 252, p. 328-346, doi:10.1016/j.palaeo.2006.11.050.

Tribovillard, N., Algeo, T.J., Lyons, T.W., and Riboulleau, A., 2006, Application of trace metals as paleoredox and paleoproductivity proxies: Chemical Geology, v. 232, p. 12-32.

Algeo, T.J., and Lyons, T.W., 2006, Mo–total organic carbon covariation in modern anoxic marine environments: Implications for analysis of paleoredox and paleohydrographic conditions: Paleoceanography, p. 21, PA1016, doi:10.1029/2004PA001112.

Algeo, T.J., 2004, Can marine anoxic events draw down the trace-element inventory of seawater?: Geology, v. 32, p. 1057-1060.

Algeo, T.J., Schwark, L., and Hower, J.C., 2004, High-resolution geochemistry and sequence stratigraphy of the Hushpuckney Shale (Swope Formation, eastern Kansas): Implications for climato-environmental dynamics of the Late Pennsylvanian Midcontinent Seaway: Chemical Geology, v. 206, p. 259-288.

Algeo, T.J., and Maynard, J.B., 2004, Trace element behavior and redox facies in core shales of Upper Pennsylvanian Kansas-type cyclothems: Chemical Geology, v. 206, p. 289-318.

Algeo, T., Twitchett, R., 2010. Anomalous Early Triassic sediment fluxes due to due to elevated weathering rates and their biological consequences. Geology, v. 38, p. 1023-1026

Algeo, T.J., Hinnov, L., Moser, J., Maynard, J.B., Elswick, E., Kuwahara, K., and Sano, H., 2010. Changes in productivity and redox conditions in the Panthalassic Ocean during the latest Permian.  Geology, v. 38, p. 187-190; doi:10.1130/G30483.1

Algeo, T.J., and Tribovillard, N. 2009. Environmental analysis of paleoceanographic systems based on molybdenum-uranium covariation. Chemical Geology, v. 268, p. 211-225, doi:10.1016/j.chemgeo.2009.09.001.

Zhang, T.G., Shen, Y., and Algeo, T.J., 2010, High-resolution carbon isotopic records from south China: implications for atmospheric CO2 changes during the Ordovician. Palaeogeography Palaeoclimatology Palaeoecology, v. 289, p. 102-112

McArthur, J.M., Algeo, T.J., van de Schootbrugge, B., Li, Q., and Howarth, R.J., 2008, Basinal restriction, black shales, and the Early Toarcian (Jurassic) oceanic anoxic event. Paleoceanography, v. 23, PA4217, doi:10.1029/2008PA001607

Algeo, T.J., Rowe, H., Hower, J.C., Schwark, L., Hermann, A., and Heckel, P.H., 2008, Oceanic denitrification during Late Carboniferous glacial-interglacial cycles. Nature Geoscience, v. 1, p. 709-714, doi:10.1038/ngeo307.

Algeo, T.J., and Maynard, J.B., 2008, Trace metal covariation as a guide to water-mass conditions in ancient anoxic marine environments. Geosphere. v. 4; no. 5; p. 872-887; doi: 10.1130/GES00174.1.

Tribovillard, N., Bout-Roumazeilles, V., Algeo, T.J., Lyons, T.W., Sionneau, T., Montero-Serrano, J.-C., Riboulleau, A., and Baudin, F., 2008. Paleodepositional conditions in the Orca Basin as inferred from organic matter and trace metal contents. Marine Geology, v. 254, p. 62-72, doi:10.1016/j.margeo.2008.04.016.

Algeo, T.J., and Heckel, P.H., 2008, The Late Pennsylvanian Midcontinent Sea of North America: A review. Palaeogeography Palaeoclimatology Palaeoecology, v. 268, p. 205-221, doi:10.1016/j.palaeo.2008.03.049.

Algeo, T.J., Heckel, P.H., Maynard, J.B., Blakey, R., and Rowe, H., 2008. Modern and ancient epicratonic seas and the superestuarine circulation model of marine anoxia. In: Holmden, C., Pratt, B.R. (Eds.), Dynamics of Epeiric Seas: Sedimentological, Paleontological and Geochemical Perspectives. Geological Association of Canada Special Publication, v. 48, p. 7-38.

Popular Magazine Article

R. Flanagan 1995. Earth. Mass murderers of the Devonian, pp. 22-23, 62.

Published Abstract

Grice, K., Nabbefeld, B., Maslen, E., Summons, R.E., Hays, L., Twitchett, R.L., Turgeon, S., Algeo, T., Bottcher, M.E., 2007, Significance of biomarkers for P/Tr and F/F mass extinctions: 17th Annual V.M. Goldschmidt Conference, Cologne, Germany.

Turgeon, S.C., Creaser, R.A., and Algeo, T.J., 2006, Re-Os depositional ages and seawater Os estimates for the Frasnian-Fammenian Boundary: 16th Annual V. M. Goldschmidt Conference, Sydney, Australia, August 2006. Geochimica et Cosmochimica Acta, Volume 70, Issue 18, Supplement 1, August-September, p. A660.

Presentations
Invited Presentations

Algeo, T.J. (11-2007. )Colloquium talk .University of Texas at Arlington, Arlington, TX. Level:Department

Algeo, T.J. (11-2007. )Keynote Address at Terrestrialization W