Thomas Algeo

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.

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

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

1989 -1991 Senior Petroleum Geologist, Exxon Co. USA,

1991 -2008 Asst/Assoc Professor, University of Cincinnati,

2008 - Professor, University of Cincinnati,

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: #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

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.

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.

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.

In Press

Algeo, T.J., Chen, Z.Q., Fraiser, M.L., Twitchett, R.J., 2010. Terrestrial-marine teleconnections in the collapse and rebuilding of Early Triassic marine ecosystems. Palaeogeography Palaeoclimatology Palaeoecology

Algeo, T.J., Kuwahara, K., Sano, H., Bates, S., Lyons, T., Elswick, E., Hinnov, L., Ellwood, B.B., Moser, J., and Maynard, J.B., 2010. Spatial variation in sediment fluxes, redox conditions, and productivity in the Permian-Triassic Panthalassic Ocean. Palaeogeography Palaeoclimatology Palaeoecology

Chen, L., Wang, Y., Xie, S., Kershaw, S., Dong, M., Yang, H., Liu, H., and Algeo, T.J., 2011, Molecular records of microbialites following the end-Permian mass extinction in Chongyang, Hubei Province, South China. Palaeogeography Palaeoclimatology Palaeoecology

Luo, G., Wang, Y., Yang, H., Algeo, T.J., Kump, L.R., Huang, J., and Xie, S., 2011. Stepwise and large-magnitude negative shift in δ¹³C_carb preceded the main marine mass extinction of the Permian-Triassic crisis interval. Palaeogeography Palaeoclimatology Palaeoecology

Ellwood, B.B., Algeo, T.J., El Hassani, A., Tomkind, J.H., and Rowe, H., 2010. Defining the timing and extent of the Kačák Interval within the Eifelian/Givetian Boundary GSSP, Mech Irdane, Morocco, using geochemical and magnetic susceptibility patterns. Palaeogeography Palaeoclimatology Palaeoecology

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 Workshop .Museum of Natural History, Paris, France. Level:International

Algeo, T.J. (11-2007. ) Colloquium talk .Georgia Institute of Technology, Atlanta, GA. Level:Department

Algeo, T.J. (11-2007. ) Colloquium talk .Arkansas State University, Jonesboro, AK. Level:Department

Algeo, T.J. (09-2007. ) Colloquium talk .Massachusetts Institute of Technology, Boston, MA. Level:Department

Algeo, T.J. (06-2007. ) Colloquium talk .China University of Geosciences, Wuhan, China. Level:University

Algeo, T.J. (03-2007. ) Colloquium talk .China University of Geosciences, Beijing, China. Level:University

Algeo, T.J. (12-2005. ) Keynote Address .NSF Paleoceanographic Proxies Workshop, San Francisco, CA. Level:National

Algeo, T.J. (02-2005. ) Colloquium talk .Ohio University , Athens, OH. Level:Department

Algeo, T.J. (11-2004. ) Colloquium talk .Louisiana State U., Baton Rouge, LA. Level:Department

Algeo, T.J. (09-2004. ) Colloquium talk .Kansas Geological Survey/U. of Kansas, Lawrence, KS. Level:Department

Algeo, T.J. (04-2004. ) Colloquium talk .University of Illinois at Chicago, Chicago, IL. Level:Department

Algeo, T.J. (10-2003. ) Colloquium talk .Indiana University, Bloomington, IN. Level:Department

Algeo, T.J. (05-2003. ) Colloquium talk .Kansas Geological Survey, Lawrence, KS. Level:Department

Algeo, T.J. (02-2003. ) Colloquium talk .University of Kentucky, Lexington, KY. Level:Department

Algeo, T.J., Scheckler, S.E., and Gensel, P.G. (10-08-2007. ) Land plant evolution and weathering rate changes in the Devonian .Terrestrialization Influences On The Palaeozoic Geosphere-Biosphere, Muséum National d’Histoire Naturelle, Paris . Workshop. .

Algeo, T.J. (06-21-2007. ) Pangea: The effect of supercontinent formation and breakup on global hypsometry and eustasy .16th International Congress on the Carboniferous and Permian (ICCP) Session 5: Evolutionary Palaeogeography and Palaeoclimatology; Pangea formation and breakup, Nanjing China.

Algeo, T.J., Heckel, P.H., Rowe, H., Hower, J.C., and Schwark, L. (06-21-2007. ) Advection of denitrified (15N-enriched) Panthalassic intermediate waters to the Late Paleozoic Midcontinent Sea of North America .16th International Congress on the Carboniferous and Permian (ICCP), Session 6: Isotopic Geochemistry and Geobiology in the Permo-Carboniferous , Nanjing, China.

Algeo, T.J., Shen, Y., Zhang, T., Lyons, T.W., Rowe, H., and Nguyen, T.K.T. (06-21-2007. ) Recurrent upwelling of sulfidic deep watermasses at the Permian-Triassic boundary .16th International Congress on the Carboniferous and Permian (ICCP) Session 9: End-Permian Biotic Mass Extinction and Early-Triassic Recovery, Nanjing, China.

Algeo, T.J. (04-03-2007. ) High-frequency paleoclimate variation: analysis, interpretation, and significance .AAPG/SEPM Annual Meeting, Long Beach, California.

Herrmann, A., Wasylenki, L., Algeo, T., and Anbar, A.D. (04-2007. ) Sequence stratigraphic control on the molybdenum isotope record of the Hushpuckney Shale: Implications for regional paleoceanographic conditions .Geol. Soc. Am. North-Central Meeting, Lawrence, Kansas.

Algeo, T.J., Shen, Y., Lyons, T.W., Ellwood, B.B., Rowe, H., and Zhang, T. (10-22-2006. ) The Permian-Triassic boundary at Nhi Tao, Vietnam: Evidence for recurrent influx of sulfidic watermasses to a shallow-marine carbonate platform .Geol. Soc. Am. Annual Meeting, Philadelphia.

Algeo, T.J., Rowe, H., and Maynard, J.B. (10-22-2006. ) Elemental proxies for hydrographic conditions in restricted marine systems .Geol. Soc. Am. Annual Meeting, Philadelphia.

Algeo, T.J., Hinnov, L.A., and Over, D.J. (10-22-2006. ) Milankovitch cyclicity in the Ohio and Sunbury shales: Astronomical calibration of the Late Devonian-Early Carboniferous timescale .Geol. Soc. Am. Annual Meeting, Philadelphia.

Herrmann, A., Wasylenki, L., Algeo, T., and Anbar, A.D. (10-22-2006. ) Molybdenum isotope record of the Hushpuckney Shale (Missourian Stage, Eastern Kansas): implications for regional and global anoxia .Geol. Soc. Am. Annual Meeting, Philadelphia.

McArthur, J.M., Algeo, T.J., Wignall, P., and van de Schootbrugge (08-2006. ) Evaluating causes for the Toarcian Oceanic Anoxic Event using trace elements, 187Os/188Os, 87Sr/86Sr, and δ13C of belemnite calcite .Internat. Assoc. Sedimentologists Annual Meeting, Fukuoka, Japan.

Lyons, T., Anbar, A., Scott, C., Bekker, A., Severmann, S., and Algeo, T. (2006. ) In search of anoxia in the Proterozoic ocean .

Algeo, T.J., Ellwood, B., Thoa, N.T.K., Rowe, H., and Maynard, J.B. (03-2006. ) The Permo-Triassic boundary at Nhi Tao, Vietnam: Evidence for recurrent influx of sulfidic watermasses to a shallow-marine carbonate platform .Interrad XI, Circum-Pacific Triassic Stratigraphy & Correlation Conference: The International Association Of Radiolarian Paleontologists, Wellington, New Zealand.

Algeo, T.J., and Lyons, T.W. (08-2005. ) Mo-TOC covariation in modern anoxic marine environments: Implications for analysis of paleoredox and –hydrographic conditions .Earth Systems Processes 2, Calgary, Alberta, Canada.

Algeo, T.J., Lyons, T.W., Blakey, R.C., and Over, D.J. (08-2005. ) Estimating the residence time of epeiric sea watermasses from sedimentary elemental proxies .Earth Systems Processes 2, Calgary, Alberta, Canada.

Algeo, T.J., and Ellwood, B. (05-2005. ) Preliminary geochemical analysis of the Cao Bang Permian-Triassic boundary section in northeastern Vietnam .Triassic Chronostratigraphy and Biotic Recovery conference, Chaohu, China.

Algeo, T.J. (2004. ) Phanerozoic sedimentary Corg:P ratios and paleocean ventilation .AGU Fall Meeting, San Francisco, CA .

Algeo, T.J., and Heckel, P.H. (2004. ) Cyclothemic offshore “core” shales as records of climate dynamics and interglacial durations of the Permo-Carboniferous Ice Age .GSA Annual Meeting, Denver, CO.

Algeo, T.J. (2004. ) Can marine anoxic events draw down the trace-element inventory of seawater? (invited talk). .GSA Annual Meeting, Denver, CO.

Algeo, T.J., and Scheckler, S.E. (2003. ) The role of soils as an interface between terrestrial and marine ecosystems: The Middle to Late Devonian (invited talk). .GSA Annual Meeting, Seattle, WA .

Algeo, T.J. (2003. ) The Late Devonian marine P cycle and the origin of widespread black shales: Enhanced rates of upwelling or chemical weathering? (invited talk) .GSA Annual Meeting, Seattle, WA.

Algeo, T.J., Hower, J.C., and Schwark, L. (2003. ) Climato-environmental dynamics of the Late Pennsylvanian Midcontinent Seaway: Implications from high-resolution geochemical and sequence stratigraphic analysis of core shales .GSA Annual Meeting, Seattle, WA.

Algeo, T.J., and Maynard, J.B. (2003. ) Trace element behavior and redox facies in core shales of Upper Pennsylvanian Kansas-type cyclothems (invited talk) .GSA Annual Meeting, Seattle, WA.

Algeo, T.J., and Maynard, J.B. (2003. ) Trace element behavior and redox facies analysis of core shales of Upper Pennsylvanian Kansas-type cyclothems (invited talk .13th Annual V.M. Goldschmidt Conference “Biogeochemistry and paleoenvironmental implications of metals in marine sediments”, Kurashiki, Japan.

Algeo, T.J., Meyers, P.A., Rowe, H. (10-2010. ) Icehouse-greenhouse climate impacts on the Phanerozoic marine nitrogen cycle .Geological Society of America Annual Meeting, Denver, CO. Level:National

Algeo, T.J., Tyson, R., Tong, J., Feng, Q., Yin, H., Henderson, C.M (10-2010. ) Anomalies in organic carbon concentrations and accumulation rates during the Permian-Triassic boundary crisis: Implications for sediment flux and marine productivity changes .Geological Society of America Annual Meeting, Denver, CO. Level:National

Algeo, T.J. (10-2010. ) Redox conditions in Late Permian-Early Triassic oceans: The role of elevated continental weathering fluxes .Geological Society of America Annual Meeting, Denver, CO. Level:National

Algeo, T., and Lyons, T. (06-2010. ) Use of sedimentary trace-metal concentration data to constrain hydrographic conditions in ancient marine systems .20th Annual V.M. Goldschmidt Conference, Knoxville, TN. Level:International

Algeo, T.J., and Twitchett, R.J. (06-2010. ) Deoxygenation of Permo-Triassic oceans: The role of elevated continental weathering fluxes .20th Annual V.M. Goldschmidt Conference, Knoxville, TN. Level:International

Algeo, T.J., and Scheckler, S.E. (06-2010. ) Land plant evolution and weathering rate changes in the Devonian .International Geobiology Conference, Wuhan, China. Level:International

Algeo, T.J. (06-2010. ) Anomalous Early Triassic sediment fluxes due to elevated weathering rates .International Geobiology Conference, Wuhan, China. Level:International

Algeo, T.J., Herrmann, A., and Haupt, B. (04-2010. ) Gradients in sediment geochemistry as a constraint on modeling epeiric sea circulation .American Association of Petroleum Geologists Annual Meeting, New Orleans, LA. Level:National

Algeo, T.J., and Rowe, H. (04-2010. ) Anoxia in ancient epeiric seas: The limits of modern analogs .American Association of Petroleum Geologists Annual Meeting, New Orleans, LA. Level:National

Algeo, T.J., Tong, J., and Feng, Q. (10-2009. ) Permian/Triassic boundary clay beds in South China—related to the Emeishan Large Igneous Province? .Geological Society of America Annual Meeting, Portland, OR. Level:National

Algeo, T.J., and Meyers, P.A. (10-2009. ) Icehouse-greenhouse climate impacts on the Phanerozoic marine nitrogen cycle .Geological Society of America Annual Meeting, Portland, OR. Level:National

Algeo, T.J., Tong, J., Feng, Q., and Henderson, C. (06-2009. ) A marine primary productivity crash in the eastern Tethyan region at the Permian/Triassic boundary? .North American Paleontological Congress, Cincinnati, OH. Level:International

Algeo, T., Gordon, G., Sauer, P., and Grice, K. (06-2009. ) New insights on the Frasnian/Famennian mass extinction: a role for soil erosion? .North American Paleontological Congress, Cincinnati, OH. Level:International

Algeo, T.J., and Hinnov, L.A. (06-2009. ) Refinement of the Late Paleozoic Time Scale: The Potential of Astronomical Tuning. American Association of Petroleum Geologists Annual Meeting, Denver, CO. Level:National

Algeo, T.J., and Lyons, T.W. (06-2009. ) The Future of Trace-Metal Proxies for Paleoceanographic Analysis .American Association of Petroleum Geologists Annual Meeting, Denver, CO. Level:National

Herrmann, A.D., Algeo, T.J., Anbar, A.D. (10-2010. ) Do uranium isotopes of epicontinental black shales reflect global oceanic conditions? .Geological Society of America Annual Meeting, Denver, CO. Level:National

Shen, J., Algeo, T.J., Zhou, L., Feng, Q., Yu, J. (10-2010. ) Evolution of the primary productivity across deep water PTB in South China .Geological Society of America Annual Meeting, Denver, CO. Level:National

Twitchett, R.J., Algeo, T.J. (06-2010. ) High sedimentation rates in Early Triassic shelf settings: a control on post-Permian biotic recovery? .International Paleobiology Conference, London, UK. Level:International

Haupt, B.J., Herrmann, A., and Algeo, T.J. (04-2010. ) Modeling the Middle-Late Pennsylvanian North American Midcontinent Sea .American Association of Petroleum Geologists Annual Meeting, New Orleans, LA. Level:National

Wan, Z., Algeo, T. (06-2009. ) Stomatal parameters of Middle Devonian-Early Carboniferous land plants .North American Paleontological Congress, Cincinnati, OH. Level:International

Negrini, R., Miller, T., Stephenson, R., Ramirez, R., Leiran, J., Wigand, P., Rhodes, D., and Algeo, T. (04-2009. ) A 200,000-yr record of lake-level change from the Carrizo Plain, Central Coastal California .Pacific Climate Workshop (PACLIM), Asilomar, CA. Level:Regional

Algeo, T.J., Gordon, G., Anbar, A., Sauer, P., Schwark, L., Bates, S., Lyons, T., Turgeon, S., Creaser, R., Nabbefeld, B., Grice, K., (12-2008. ) New insights on the Frasnian/Famennian mass extinction: a role for soil erosion? .American Geophysical Union Fall Meeting, San Francisco, CA. Level:National

Algeo, T.J., Ellwood, B.B., Rowe, H., Krystyn, L., Richoz, S. (09-2008. ) Chemostratigraphy and Sequence Stratigraphy of the Induan/Olenekian Boundary in the Mud-4 Section, Spiti Valley, India .13th International Gondwana Conference, Dali, China. Level:International

Grice, K., Nabbefeld, B., Maslen, E., Summons, R.E., Hays, L., Twitchett, R.L., Turgeon, S., Algeo, T., Bottcher, M.E (08-2007. ) Significance of biomarkers for P/Tr and F/F mass extinctions. 17th Annual V.M. Goldschmidt Conference, Cologne, Germany. Level:International

Algeo, T.J. (12-2010. ) Colloquium talk .University of Manitoba, Winnipeg, Canada. Level:Department

Algeo, T.J. (09-2010. ) Colloquium talk .University of Texas at Arlington, Arlington, TX. Level:Department

Algeo, T.J. (09-2010. ) Colloquium talk .Southern Methodist University, Dallas, TX. Level:Department

Algeo, T.J. (04-2010. ) Keynote Address .NSF Ocean Oxygen Workshop, NASA Ames Research Center, Mountain View, CA. Level:National

Algeo, T.J. (03-2010. ) Colloquium talk .Yale University, New Haven, CT. Level:Department

Algeo, T.J. (02-2010. ) Colloquium talk .IUPUI, Indianapolis, IN. Level:Department

Algeo, T.J. (11-2009. ) Colloquium talk .IUPUI, Indianapolis, IN. Level:Department

Algeo, T.J. (09-2009. ) Colloquium talk .Texas A&M University, College Station, TX. Level:Department

Event Organized

“New Developments in Permian-Triassic Paleoceanography”, GSA Annual Meeting Conference 10-2010 10-2010 Denver, CO Level:National

“New Developments in Trace Metal Proxies”; V.M. Goldschmidt International Geochemistry Conference Conference 06-2010 06-2010 Knoxville, TN Level:International

“Data-Model Integration in Paleoclimate Studies”; AAPG/SEPM Annual Meeting Conference 04-2010 04-2010 New Orleans, LA Level:National

09-2007 -06-2011 National Research Council, Committee on the Importance of Deep-Time Geologic Records for Understanding Climate Change Impacts Member, National Research Council, Committee on the Importance of Deep-Time Geologic Records for Understanding Climate Change Impacts (Dick Norris, 1st chair; Isabel Montanez, 2nd chair; David Feary, coordinator), 2007-2011

Palaeogeography Palaeoclimatology Palaeoecology (journal) (Special Issue on Precambrian and Paleozoic Seawater Chemistry ) Guest Co-Editor Type:Service to Professional Associations Level:International 06-2004 -06-2007

Palaeogeography Palaeoclimatology Palaeoecology (journal) (Special Issue on P/Tr Boundary Crisis and Early Triassic Biotic Recovery ) Guest Co-Editor Type:Service to Professional Associations Level:International 06-2005 -06-2007

Palaeogeography Palaeoclimatology Palaeoecology (journal) (Special Issue on Early Triassic Marine Ecosystems Recovery ) Guest Co-Editor Type:Service to Professional Associations Level:International 01-2009 -01-2011

Chemical Geology (journal) (Special Issue on New Applications of Trace Metals in Paleoceanographic ) Guest Co-Editor Type:Service to Professional Associations Level:International 09-2010 -09-2012

National Science Foundation (Member, NSF/ARI Panel for Major Research Instrumentation ) Committee Member Type:Service to Professional Associations Level:National 09-2009 -10-2009

International Geological Union (Member, International Commission on Stratigraphy, Subcommission on Carboniferous Stratigraphy ) Committee Member Type:Service to Professional Associations Level:International 06-2009 -06-2014

National Academy of Science--National Research Council (Committee on the Importance of Deep-Time Geologic Records ) Committee Member Type:Service to Professional Associations Level:National 09-2007 -06-2011

15-EVST-101 ENVIRON SCIENCE I Level:Undergraduate

15-GEOL-611 STABLE ISOTOPE SYS Level:Graduate

15-GEOL-399H GLOBAL CLIM CHANGE Level:Undergraduate

15-GEOL-161 OCEANOG-PLANT EARTH Level:Undergraduate

15-EVST-101 ENVIRON SCIENCE I Level:Undergraduate

Sedimentary Petrology Level:Undergraduate

15-GEOL-399H GLOBAL CLIM CHANGE Level:Undergraduate

Carbonate Depositional Environments Level:Graduate

15-GEOL-103 HISTORICAL GEOLOGY Level:Undergraduate

15-EVST-101 ENVIRON SCIENCE I Level:Undergraduate

Sedimentary Petrology Level:Undergraduate

15-GEOL-611 STABLE ISOTOPE SYS Level:Graduate

15-GEOL-399H GLOBAL CLIM CHANGE Level:Undergraduate

15-GEOL-103 HISTORICAL GEOLOGY Level:Undergraduate

15-GEOL-103 HISTORICAL GEOLOGY Level:Undergraduate

"Murderous trees": K. Fox, Science Report, American Institute of Physics, Aug. 1995 (radio interview).,