Department of Environmental Sciences


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Main Campus
Wolfe Hall Suite 1235

2801 West Bancroft St.,
Mail Stop #604
Toledo, Ohio 43606-3390

Phone: 419.530.2009
Fax: 419.530.4421

Faculty: Timothy G. Fisher

Timothy G. Fisher
Professor of Geology
Department Chair, Environmental Sciences
Ph.d.  University of calgary 1993

Research and Teaching Interests:

  • Geomorphology
  • Glacial and Quaternary Geology
  • Quaternary History of the Great Lakes

(419) 530-2009 |

 Timothy G. Fisher
Research Current Students
Recent Publications Past Students
Courses Download Vitae


Fisher ResearchResearch is primarily focused on:

Reconstructing the history, timing, and magnitude of discharge from the outlets of Lake Agassiz. This data can be considered baseline information for a variety of scientific disciplines. Importantly, oceanographers and climate modelers require this data to understand past climate changes (e.g. Younger Dryas) that may have been triggered by outlet switching.

Documenting and reconstructing paleo lake levels in the Great Lakes, specifically in the Lake Michigan basin. Work is ongoing along the western coastline of Michigan and on the Upper Peninsula of Michigan with Dr. Ed Hansen of Hope College, and Dr. Walt Loope of the USGS.

Resolving triggering mechanism to coastal sand dunes along the Great Lakes. This work requries reconstructing sand dune history as well as resolving aeolian proxy records from lakes downwind of the dunes. 

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Recent Publications

    >> View Dr. Fisher's Google Scholar page for complete list. 


Fisher, T.G. 
      An inexpensive vibracoring splitting jig, J. Paleolimnology. 4p.      

Fisher, T.G., Lowell, T.V.
Glacial geology and landforming events in the Fort McMurray region. In Ronaghan, B. (Ed) Alberta's Lower Atghabasca Plain: Archaeology and Paleoenvionments, Athabasca University Press, pp. 45-68. doi: 10.15215/aupress/9781926836904.01.


Kelly, M.A., Fisher, T.G., Lowell, T.V., Barnett, P., Schwartz, R.
10Be ages of flood deposits west of Lake Nipigon, Ontario: evidence for early Holocene drainage of glacial Lake Agassiz, Canadian Journal of Earth Sciences. doi: 10.1139/cjes-   2015-0135.   


Fisher, T.G., Blockland, J.D., Anderson, B., Krantz, D.E., Stierman, D., and Goble, R.
2015, Age of Ancestral Lake Erie Lake-Levels, Northwest Ohio, Ohio Journal of Science, v. 115, no. 2, p. 61-77.

Stokes, C. R., Tarasov, L., Blomdin, R., Cronin, T. M., Fisher, T. G., and 21 others.
2015, On the reconstruction of palaeo-ice sheets: Recent advances and future challenges: Quaternary Science Reviews, v. 125, p. 15-49.

Blockland, J., and Fisher, T. G.,
2015, The surficial geology of the Delta 7.5-minute series quadrangle, Fulton County, Ohio, USA: Journal of Maps, v. DOI: 10.1080/17445647.2015.1071289.


Liu, X.,Lepper, K., Fisher, T.G., Lowell, T.V.
Geochemical characteristics of glacial Lake Agassiz sediments and new ages for the Moorhead Phase at Fargo, North Dakota, USA, Canadian Journal of Earth Sciences. Published on the web 23 July 2014, 10.1139/cjes-2014-0039

*Higley, M.C., Fisher, T.G., Jol, H.M., Lepper K., Martin-Hayden, J.M. 
Stratigraphic and chronologic analysis of the Warren Beach, Northwest Ohio, USA, Canadian Journal of Earth Sciences 51: 1-13

Featured as an Editors Choice visit:

Fisher, T.G., and Hansen, E.C.
2014, Introduction, in Fisher, T.G., and Hansen, E.E., eds., Coastline and Dune Evolution along the Great Lakes: Geological Society of America Special Paper 508, p. vii-xi,

Fisher, T.G.,DeVries-Zimmerman, S., Hansen, E.C., Dean, S., and Bjorck, S.,
2014, Sand in lakes and bogs in Allegan County, Michigan as a proxy for eolian sand transport, in Fisher, T.G., and Hansen, E.C., eds., Coastline and Dune Evolution along the Great Lakes: Geological Society of America Special Paper 508, p. 111-132

Fisher, T.G., Krantz, D.E., Castaneda, M., Loope, W.L., Jol, H.M., Goble, R.J., Higley, M.C., DeWald, S., and Hanson, P.R.
2014, Coastal geology and recent origins for San Point, Lake Superior, in Fisher, T.G., and Hansen, E.C., eds., Coastline and Dune Evolution along the great Lakes: Geological Society of America Special Paper 508, p. 85-110

Loope, W.L., Jol, H.M., Fisher, T.G., Blewett, W.L., Loope, H.M., and Legg, R.J.
2014, Early Holocene signals of interbasin passage and glacial lake transgression in interior eastern Upper Michigan, in Fisher, T.G., and Hansen, E.C., eds., Coastline and Dune Evolution along the Great Lakes: Geological Society of America Special Paper 508, p. 1-14

*Hanes, B.E., Fisher, T.G., Becker, R.H., and Martin-Hayden, J.M.
2014, Elucidating paleo dune activity and timing from wetlands in the lee of coastal sand dunes, Grand Mere Lakes, Michigan, USA, in Fisher, T.G., and Hansen, E.E., eds., Coastline and Dune Evolution along the Great Lakes: Geological Society of America Special Paper 508, p. 133-150

*Baca, K.J., Fisher, T.G., and Gottgens, J.F.
2014, Temporally constrained eolian sand signals and their relationship to climate, Oxbow Lake, Saugatuck, Michigan, in Fisher, T.G., and Hansen, E.E., eds., Coastline and Dune Evolution along the Great Lakes: Geological Society of America Special Paper 508, p. 151-166


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    Description and study of the earth's surface features from the point of view of their origin including landforms created by volcanism, tectonics, and erosional/depositional processes. Field trip required. [Fall] Prerequisite: EEES 1010 or 2100.
  • EEES 4100 / 5100 GLACIAL GEOLOGY [3 hours]
    To understand glaciers and glacial landscapes. Topics include mass balance, ice flow, hydrology, erosion, deposition, landforms, glacial lakes and development of the Ohio glacial landscape. Field trip is mandatory. [4100: Spring; 5100: Spring, odd years] Prerequisite: EEES 3100 or consent of instructor.
  • EEES 4200 / 5200 QUATERNARY GEOLOGY [3 hours]
    To provide understanding of such cyclical events as climate change, sea level fluctuations, vegetation change and ice sheet paleogeography during the Quaternary Period and to explore future changes for planet Earth. [4200: Spring; 5200: Spring, even years] Prerequisite: consent of instructor.
    To integrate glacial sedimentology and stratigraphy, with near-surface, geophysical methodologies. Field work to collect a variety of field data to analyze in the lab is mandatory. Data to be presented as posters. [Fall, every year; Fisher & Krantz] Prerequisite: consent of instructor.

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Current Students

 Jon Luczak MS 2016

History and Chronology of the Imlay Channel, MI

Alex Sodeman MS 2018 (co-advised, Dr. Richard Becker)

Evaluating tunnel channels of the Huron-Erie Lobe in Ohio & Indiana

Thomas Valachovics MS 2017

Chronological glacial landforms and stratigraphy, Mongo Indiana


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Past Students

Mitchell Dziekan MS 2017

Origins of Basal Sediment within Kettle Lakes in Southern Michigan and Northern Indiana

Working as a Geologist, BARR Engineering Co., Ann Arbor, MI


Jennifer Horton MS 2015

Deglacial history of the Huron Erie Lobe in Indiana and Ohio

Working as Geologist, Minnesota Geological Survey

Kira Baca MS 2013

Environmental impacts on the development and dune activity of Oxbow Lake along the southwest coast of Lake Michigan at Saugatuck, Michigan USA

Working as a high school science teacher.

Joe Blockland MS 2013

The Surficial Geology of Fulton County, Ohio: Insight into the Late Pleistocene-Early Holocene Glaciated Landscape of the Huron-Erie Lake Plain, Fulton County Ohio, USA

Working as a Geologist, North Dakota Geological Survey

Brad Anderson MS 2011

Rhythmic sedimentation in ancestral Lake Erie: estimating duration above the Lake Warren level, NW Ohio

Working as a consulting geologist.

Barb Hanes MS 2010

Paleo-storminess in the southern Lake Michigan basin, as recorded by eolian sand downwind of dunes

Working as geologic specialist for the Pennsylvania Department of Environmental Protection.

Mario Castaneda MS 2009

Chronology of Sand Point at Pictured Rocks National Lakeshore

Teaching geology in Honduras; working
as a geologist for the Honduran government.

Brittany Austin MS 2007

Late Wisconsinan history and molluscan paleoecology of Stony and Silver Lakes, Oceana County, MI, USA

Working as a consulting geologist.

Melinda Campbell MS 2009

Surficial geology mapping of the dune-dominated Whitehouse 7.5’ Quadrangle

Ph.D. student at UIUC. Workied for the Illinois State Geological Survey.

Henry Loope MS 2006

Deglacial chronology and glacial stratigraphy of the western Thunder Bay Lowland, Northwest Ontario, Canada

Ph.D. graduate, U Wisconsin-Madison 2013. Employed as research glacial geologist, Indiana Geological Survey.

Amber Boudreau MS 2005

Constraining the Nipissing transgression in Lake Michigan

Working as a consulting geologist for the Wisconsin Geology and Natural History Museum

Kelly Weyer MS 2005

Can eolian sand in lakes downwind of perched dunes be used as a proxy for paleo Lake Michigan levels?

Working as a consulting geologist.

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Last Updated: 1/19/18