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Thomas Cronin

Research Geologist

Contact Info

Short Biography

➢    BA, Colgate (geology) 1972
➢    MA, Ph.D. Harvard (geology) 1977
➢    USGS Research Geologist 1978-present
➢    Adjunct faculty Georgetown University Walsh School of Foreign Service, 2002-present;
➢    Faculty 2008-09 Urbino (Italy) Summer School for Paleoclimatology.
➢    White House Office of Science, Technology and Policy (OSTP), 1996/97
➢    Shizuoka University, Japan. NSF-sponsored visiting researcher; 1991,
➢    National Research Council post-doc, USGS 1977-1978.

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Books & Volumes


Editor:  N. Ikeya, T. Kamiya, T. Cronin, eds. 2005. “Application of Ostracoda to Paleoclimate” Palaeogeography, Palaeoecology, Palaeoclimatology.  Vol.  225 (#1-4)

Editor:  Langland, M. J. and T. M. Cronin, eds., 2003, A summary report of sediment processes in Chesapeake bay and watershed: U.S. Geological Survey Water-Resources Investigations Report 03-4123, 109 p.

Editor: Cronin, T. M. 2000. Initial Report on IMAGES V Cruise of Marion-Dufresne to Chesapeake Bay June, 1999. USGS OFR 00-306.

Editor: Cronin, T. M., K. Ogasawara, J. Wolfe, eds. 1994. "Cenozoic Climate and Paleogeographic Changes in the Pacific Region" Palaeogeography, Palaeoecology, Palaeoclimatology. Special issue vol. 108. 

Editor: Cronin, T. M., W. F. Cannon, R. Z. Poore, eds., 1983.  Paleoclimate and Mineral Deposits.  USGS Circular 822.

Editor: Cronin, T. M. and H. Dowsett, eds. 1991. Pliocene Climates. Quaternary Science Reviews, vol. 10  (PRISM volume)


Journal articles and reports


DeNinno, L.H., Cronin, T.M., Rodriquez-Lazaro, J., Brenner, A. 2015. An early to mid-Pleistocene deep Arctic Ocean ostracode fauna with North Atlantic affinities. Palaeogeography, Palaeoclimatology, Palaeoecology 419, 90-99, doi:10.1016/j.palaeo.2014.07.026 

Yasuhara, M., Stepanova, A., Okahashi, H., Cronin, T.M., and Brouwers, E.M. 2015. Taxonomic revision of deep-sea Ostracoda from the Arctic Ocean. Micropaleontology 60, 399-444. 

Cronin, T. M., 2015, Chapter: “Ostracods and sea level” Handbook of Sea-Level Research, First Edition. Edited by Ian Shennan, Antony J. Long, and Benjamin P. Horton. John Wiley & Sons, Ltd. Published 2015 by John Wiley & Sons, Ltd.

Cronin, T. M., 2015, Climate Change. In, M. Kennish (ed.), Encyclopedia of Estuaries, doi:10.1007/978-94-017-8801-4, Springer Science+Business Media Dordrecht.

Alexanderson, H., Backman, J., Cronin, T. M., Funder, S., Ingólfsson, Ó., Jakobsson, M., Landvik, J. Y., Löwemark, L., Mangerud, J., März, C., Möller, P., O'Regan, M., and Spielhagen, R. F., 2014. An Arctic perspective on dating Mid-Late Pleistocene environmental history. Quaternary Science Reviews 92, 9-31. doi: 

Cronin, T. M., Farmer, J. Marzen, R. Thomas, E. and Varekamp, J. C. 2014. Late Holocene Sea-Level Variability and Atlantic Meridional Overturning Circulation. Paleoceanography. doi:10.1002/2014PA002632

Cronin, T. M., DeNinno, L. H. Polyak, L., Caverly, E. K., Poore, R. Z. Brenner, A., Rodriguez-Lazaro, J. and R. E. Marzen, 2014, Quaternary Ostracode and Foraminiferal Biostratigraphy and Paleoceanography in the Western Arctic Ocean. Marine Micropaleontology 111, 118-133, doi:10.1016/j.marmicro.2014.05.001

Cronin, T. M., L. Polyak, D. Reed, E. S. Kandiano, R. E. Marzen, E.A. Council. 2013. A 600-kyr Arctic Sea-Ice Record from Mendeleev Ridge based on Ostracodes. Quaternary Science Reviews 79, 157-167. 

Burkett, V.R., Kirtland, D.A., Taylor, I.L., Belnap, Jayne, Cronin, T.M., Dettinger, M.D., Frazier, E.L., Haines, J.W., Loveland, T.R., Milly, P.C.D., O’Malley, Robin, Thompson, R.S., Maule, A.G., McMahon, Gerard, and Striegl, R.G., 2013, U.S. Geological Survey climate and land use change science strategy—A framework for understanding and responding to global change: U.S. Geological Survey Circular 1383–A, 43 p.

Gemery, L., T.M. Cronin, L.W. Cooper, and J.M. Grebmeier. 2013. Temporal Changes in Benthic Ostracode Assemblages in the Northern Bering and Chukchi Seas from 1976 to 2010.  Deep-Sea Research 94, 68-79, doi:  10.1016/j.dsr2.2013.03.012

Farmer, J., T. M. Cronin, G. S. Dwyer. 2012. Ostracode Mg/Ca Paleothermometry in the North Atlantic and Arctic Oceans: Evaluation of the Carbonate Ion Effect. Paleoceanography. doi:10.1029/2012PA002305

Cronin, T. M., G. S. Dwyer, J. Farmer, H. A. Bauch, R. F. Spielhagen, M. Jakobsson, J. Nilsson, W. M. Briggs, Jr., A. Stepanova. 2012. Deep Arctic Ocean Warming during the last Glacial Cycle. Nature Geosciences 5, 631-634, doi:10.1038/ngeo1557

Poirier, R., Cronin, T. M., W. M Briggs, Jr.; R. Lockwood.  2012. Central Arctic paleoceanography for the last 50 kyr based on ostracode faunal assemblages. Marine Micropaleontology 88-89, 65-76, doi:10.1016/j.marmicro.2012.03.004

Yasuhara, M., G. Hunt, G. van Dijken, K. R. Arrigo, T. M. Cronin, J. E. Wollenburg.  2012. Patterns and controlling factors of species diversity in the Arctic Ocean. Journal of Biogeography 39, 2081-2088. doi:10.1111/j.1365-2699.2012.02758.x

Jennings, A. E., C. Sheldon, T. M. Cronin, J. Stoner, J. T. Andrews. 2011. The Holocene History of Nares Strait: Transition from glacial bay to Arctic-Atlantic Throughflow.  Oceanography. 24(3):26–41,

Manley, P., T. O. Manley, K. Hayo, T. M. Cronin. 2011. Small-scale Lacustrine Drifts in Lake Champlain, Vermont.   Journal of Great Lakes Research. doi:10.1016/j.jglr.2011.05.004.

Cronin, T. M. 2011. Forward to “Reconstructing Earth's Climate History” by Kristen St. John and Mark Leckie. Wiley-Blackwell.

Farmer, J. R., T. M. Cronin, A. de Vernal, G. S. Dwyer, L. D. Keigwin, R. C. Thunell. 2011. Ocean temperature variability in the Western Arctic Ocean during the last 8000 years. Geophysical Research Letters 38, L24602, doi:10.1029/2011GL049714.

Katz, B., R. Najjar, T. M. Cronin, J. Rayburn, and M. E. Mann. 2011. Constraints on Lake Agassiz discharge through the late-glacial Champlain Sea (St. Lawrence Lowlands, Canada) using salinity proxies and an estuarine circulation model. Quaternary Science Reviews 30, 3248-3257. 

Yasuhara, M., G Hunt, T. M. Cronin, N. Hokanishi, H. Kawahata, A. Tsujimoto, and M. Ishitake. 2011. Climatic forcing of Quaternary deep-sea benthic communities in the North Pacific Ocean Paleobiology 38:876-893.

Rayburn, J. A., T. M. Cronin, D. A. Franzi, P. L. K. Knuepfer, D. A. Willard. 2011. Timing and duration of glacial lake discharges and the Younger Dryas climate reversal. Quaternary Research 75, 541-551.

Polyak, L. R. Alley, J. Andrews, J. Brigham-Grette, T. M. Cronin, D. Darby, A. Dyke; J. Fitzpatrick, S. Funder, M. Holland, A. Jennings, G. Miller, M. O'Regan, J. Savelle, M. Serreze, K. St. John, J. White. 2010. History of Sea Ice in the Arctic. Quaternary Science Reviews, v. 29 (15-16), p. 1757-1778.

Cronin, T. M., K. Hayo, R. M. Thunell, D. S. Dwyer, C. Saenger, D. A. Willard. 2010. Medieval-Little Ice Age Climate Variability in Chesapeake Bay and the North Atlantic Region. Palaeogeography, Palaeoclimatology, Palaeoecology. v. 297, p. 299-310.

Canuel, E. A., G. Brush, T. M. Cronin, R. Lockwood, A. R. Zimmerman. 2010. Paleoecology studies in Chesapeake Bay: A model system for understanding interactions between climate, anthropogenic activities and the environment.  In, Gibson, Saunders, Gell, and Tibby eds. Chapter 15, Application of Paleoenvironmental Techniques in Estuarine Studies.

Cronin, T. M., L. Gemery, W. M. Briggs, Jr., M. Jakobsson, L. Polyak, E. M. Brouwers. 2010. Quaternary sea-ice history in the Arctic Ocean based on a new sea-ice proxy. Quaternary Science Reviews v. 29, p. 3415-3429.

Cronin, T. M. 2009. Chapter P, Paleotemperatures and Proxy Reconstructions.  In, Encyclopedia of Paleoclimatology and Ancient Environments, Gornitz, Vivien (Ed.), 8 pages, Springer.

Batiuk, R. A., D. L. Breitburg, R. J. Diaz, T. M. Cronin, D. H. Secor, G. Thursby. 2009. Derivation of habitat-specific dissolved oxygen criteria for Chesapeake Bay and its tidal tributaries. Journal of Experimental Marine Biology and Ecology 381, S204-S215. doi:10.1016/j.jembe.2009.07.023. 

Yasuhara, M., Okahashi, H., Cronin, T. M. 2009. Taxonomy of Quaternary deep-sea ostracods from western North Atlantic Ocean. Paleontology 52 (4): 879–931. 

Yasuhara, M., Cronin, T. M., Hunt, G., Hodell, D. 2009. Deep-sea ostracods from the South Atlantic sector of the Southern Ocean during the last 370,000 years. Journal of Paleontology, v. 83, p. 914-930. 

Eynaud, F., T. M. Cronin, S. Smith, J. Mavel, Y. Marry, V. Mas, S. Zaragosi. 2009. Morphological variability of the planktonic foraminifer Neogloboquadrina pachyderma from ACEX cores: Implications for Late Pleistocene circulation in the Arctic Ocean, Micropaleontology, v. 55, p. 101-116. 

Yasuhara, M., G. Hunt, T. M. Cronin, and H. Okahashi. 2009. Temporal latitudinal-gradient dynamics and tropical instability of deep-sea species diversity. Proceedings of the National Academy of Sciences, v. 106, p. 21717-21720.

Cronin, T. M., P. Manley, S. Brachfeld, T. Manley, D. A. Willard, J.-P. Guilbault, J. A. Rayburn, M. Berke. 2008. Salinity Changes in the Champlain Sea (New York, Vermont) ~11.4-10.8 ka: Implications for Glacial Lake Drainage. Palaeogeography, Palaeoclimatology, Palaeoecology, v. 262, p. 46-60. 

Cronin, T. M., S. A. Smith, F. Eynaud, M. O'Regan, and J. King. 2008. Quaternary paleoceanography of the central Arctic based on Integrated Ocean Drilling Program Arctic Coring Expedition 302 foraminiferal assemblages. Paleoceanography, v. 23, PA1S18.

Yasuhara, M., T. M. Cronin, P. Martínez Arbizu. 2008. Abyssal Ostracodes from the South Atlantic Ocean: Biological and Paleoceanographic implications. Deep-Sea Research I, v. 55, p. 490-497. 

Yasuhara, M. and T. M. Cronin. 2008. Climatic influences on deep-sea ostracode (Crustacea) species diversity for the last three million years. Ecology v. 89, p. S53-S65.

Greene, C. H., A. J. Pershing, T. M. Cronin, N. Ceci. 2008. Arctic climate change and its impacts on the ecology of the North Atlantic.  Ecology v. 89, p. S24-S38.

Saenger, C., Cronin, T. M., Willard, D., Halka, J., Kerhin, R. 2008, Increased terrestrial to ocean sediment fluxes in the northern Chesapeake Bay with twentieth century land alteration. Estuaries and Coasts, v. 31, p. 492-500.

Cronin, T. M. 2008. Chapter 7: Sediment Sources and Deposition in the Estuary. Synthesis of U.S. Geological Survey Science for the Chesapeake Bay Ecosystem and Implications for Environmental Management. USGS Circular 1316, p. 32-33.

O’Regan, M. J. King, J. Backman, M. Jakobsson, H. Pälike, K. Moran, C. Heil, T. Sakamoto, T. Cronin, R. Jordan. 2008. Cyclostratigraphic constraints on the Plio-Pleistocene chronology of sediments from the Lomonosov Ridge. Paleoceanography, v. 23, PA1S19. 

Yasuhara, M., T. M. Cronin, P. B. deMenocal, H. Okahashi, B. K. Linsley. 2008. Abrupt climate change and collapse of deep-sea ecosystems.  Proceedings of the National Academy of Sciences 105 (5): 1556-1560.

Cronin, T. M., P. R. Vogt, D. A. Willard, R Thunell, J. Halka, M. Berke, and J. Pohlman. 2007, Rapid sea level rise and ice sheet response to 8,200-year climate event, Geophysical Research Letters. 34, L20603.

Cronin, T. M. T. Edgar, G. Brooks, D. Hastings, R. Larson, A. Hine, S. Locker, B. Suthard, B. Flower, J. Wehmiller, D. Willard, S. Smith.  2007. Sea Level Rise in Tampa Bay. EOS, Trans. AGU, 88 (10): 117-118.

Willard, D. W. and T. M. Cronin. 2007. Paleoecology and ecosystem restoration: case studies from Chesapeake Bay and the Florida Everglades. Frontiers in Ecology and the Environment. v. 5, no. 9, p. 491-498. 

Ivanova, E., I O. Murdmaa, A. L. Chepalyga, T. M. Cronin, I. V. Pasechnik, O. V. Levchenko, S. S. Howe, A. V. Manushkina, E. A. Platonova. 2007. Holocene sea-level oscillations and environmental changes on the Eastern Black Sea shelf. Palaeogeography, Palaeoclimatology, Palaeoecology. v. 246, p. 228-259. 

Bergue, C. T., J. C. Coimbra, T. M. Cronin. 2007. Cytherellid species (Ostracoda) and their significance to the late Quaternary events in the Santos basin, Brazil. Senckenbergiana Maritima.  v. 37, no. 1, p. 123-130. 

Willard, D. A., C. Bernhardt, G. Brooks, T. Cronin, T. Edgar, R. Larsen.  2007. Deglacial climate variability in central Florida, USA. Palaeogeography, Palaeoclimatology, Palaeoecology. v. 251, p. 366-382. 

Franzi, D. A., J. A. Rayburn, P. L. K. Knuepfer, T. M. Cronin. 2007. Late Quaternary history of northeastern New York and adjacent parts of Vermont and Quebec. 70th Annual Northeast Friends of the Pleistocene Guidebook, SUNY Plattsburgh, 73 pp. 

Cronin, T. M. 2007. Glacial Lakes and Microfossils – Evidence for past climate change in New York State. American Paleontologist.  v. 15, no. 2, p. 22-23.

Cronin, T. M. and H. A. Walker. 2006. Restoring coastal ecosystems and abrupt climate change.  Climatic Change 74(4):  369-374.

Brinkhuis, H. and IODP-ACEX 302 Scientific Staff. 2006. Episodic fresh surface waters in the Eocene Arctic Ocean. Nature, v. 441, p. 606-609. 

Pagani, M., and IODP-ACEX 302 Scientific Staff. 2006. Arctic hydrology during global warming at the Palaeocene/Eocene thermal maximum. Nature, v. 442, p. 671-675.

Saenger, C., T. M. Cronin, R. Thunell, C. Vann. 2006. Modeling river discharge and precipitation from estuarine salinity in the northern Chesapeake Bay: Application to Holocene paleoclimate. The Holocene, v. 16, no. 4, p. 1-11.

Moran, K, J. Backman, and IODP-ACEX-302 Scientific Staff. 2006. The Cenozoic paleoenvironment of the Arctic Ocean. Nature, v. 441, p. 601-605. 

Dowsett, H., Robinson, M., Dwyer, G., Chandler, M. and Cronin, T. M. 2006. PRISM3 DOT1 Atlantic basin reconstruction.  U.S. Geological Survey Data Series, 189: 4p. 

Cronin, T. M., Thunell, R., Dwyer, G. S., Saenger, C., Mann, M. E., and Vann, C. 2005. Multiproxy evidence of Holocene climate variability from estuarine sediments, eastern North America. Paleoceanography 20: 4006.

Edwards, L.E., J. A. Barron, G. L. Brewster-Wingard, D. Bukry, L. M, Bybell, T. M. Cronin, W. C. Poag, and R. E. Weems. 2005. Paleontology of the upper Eocene to Quaternary stratigraphic section in the USGS-NASA Langley core, Hampton, Virginia, in Horton, J.W., Jr., et al., eds. Studies of the Chesapeake Bay impact structure. USGS Professional Paper 1688, chapter H.  71 pp. 

Dowsett, H. J., M. A. Chandler, T. M. Cronin, G. S. Dwyer. 2005. Middle Pliocene sea surface temperature variability. Paleoceanography, v. 20, no. 2, PA2014. 

Hunt, G., T. M. Cronin, K. Roy. 2005. Species-energy relationship in the deep sea: a test using the Quaternary fossil record. Ecology Letters, v. 8, p. 739-747. 

Cronin, T. M., H. J. Dowsett, G. S. Dwyer, P. A. Baker, M. A. Chandler. 2005. Mid-Pliocene deep-sea bottom-water temperatures based on ostracode Mg/Ca ratios.  Marine Micropaleontology v. 54, p. 249-261.

Cronin, T. M., T. Kamiya, G. Dwyer, H. Belkin, C. Vann, S. Schwede, R. Wagner. 2005.  Ecology and shell chemistry of Loxoconcha matagordensis.  Palaeogeography, Palaeoclimatology, Palaeoecology, v. 225, p. 14-67. 



My Science Topics

Science Topic
Atmosphere and Climateclimate change
Atmosphere and Climateglobal change
Atmosphere and Climateglobal warming
Ecology and Environmentbenthic ecosystems
Ecology and Environmentbiodiversity
Ecology and Environmentecosystems
Geologic Processessedimentation
Oceans and Coastlinescoastal ecosystems
Oceans and Coastlinescoastal zones
Oceans and Coastlinesmarine ecosystems
Oceans and Coastlinesocean circulation
Oceans and Coastlinesocean temperature
Oceans and Coastlinespaleoceanography
Plants and Animalsspecies diversity

My USGS Science Strategy Areas

Climate Variability & Change

Geological records of climate, sea level, ecosystems, ocean circulation

Specializing in

*North American estuaries

*Arctic Ocean Paleoclimate Records

*North Atlantic Paleoceanography

*Cenozoic stratigraphy and climate

*Quaternary sea level changes

*Estuaries and human and climatic impacts

Contact Information

Thomas Cronin
12201 Sunrise Valley Dr
Reston, VA 20192
703-648-6032 - Fax
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