Funding

CURRENT:

NSF Award # 2407342: MRI Track 1: Acquisition of a Picarro Water Isotope Analyzer for Interdisciplinary Research at GVSU

Awarded to GVSU in collaboration with co-PIs Tara Kneeshaw, Matt Cooper, and Ryan Otter. Funding through 2027. Details: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2407432 

PAST:

NSF Award #1903389: Interglacial Climate in Bermuda and Beyond

In collaboration with the University of Michigan. 2019-2024. Details: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1903389

NSF Award #2118660: Experimentally Evaluating the Relationship between Cation Ordering and Oxygen and Clumped Isotope Fractionation in Dolomite

In collaboration with Western Michigan University and the University of Michigan. Funding through 2025. Details: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2118660

Education & Experience

Postdoctoral Research Fellow, 2016 - 2018

Isotopologue Paleoscience Laboratory, University of Michigan

Ph.D., 2016

University of Michigan Earth and Environmental Sciences

M.S., 2012

University of North Carolina at Chapel Hill Geological Sciences

B.S., 2010

University of Michigan Geological Sciences

Teaching

Geo 100: Environmental Geology

Geo 105: Living with the Great Lakes

Geo 111: Exploring the Earth

Geo 175: Research Tools for Geosciences

Geo 220: Earth Surface Materials

Geo 312: Sedimentation - Stratigraphy

Geo 315: Geological Field Methods

Geo 330: Data Analysis for Earth Scientists (newly developed course)

Selected Publications

GVSU Student Authors are also in bold

Winkelstern, I., Passey, B., Rey, K., Huth, T., McGee, D. and Quade, J., 2026. Triple oxygen isotope constraints on the hydroclimate that sustained Pleistocene Lake Bonneville (Utah, USA). Geology. https://doi.org/10.1130/G54289.1

McCaffrey, O.F., Winkelstern, I.Z., Kneeshaw, T.A. and Higley, M.C., 2026. An overlooked terrestrial archive: Freshwater cements and hydroclimate signals in Quaternary glaciogenic deposits. Geosphere. https://doi.org/10.1130/GES02933.1

Winkelstern, I., Petersen, S., Curran, H. A., Phillips, C., Quizon, A., Glumac, B., & Griffing, D. (2026). Cooling climate across last interglacial high stands on San Salvador and Great Inagua, The Bahamas. The Depositional Record, 12(1), e70038. https://onlinelibrary.wiley.com/doi/full/10.1002/dep2.70038

Minnebo, L., Winkelstern, I., Zhang, J., and Petersen, S. (2024) Last Interglacial coastal hydroclimate variability in Bermuda revealed by clumped isotope oyster sclerochronology. Paleo³ v. 643. LINK 

Landstra, R. and Winkelstern, I. (2023) Constraining the Formation Environment of Modern Pisolites at Ore Lake, Michigan. Sedimentologika v. 1. LINK

Winkelstern, I. Z. and Lohmann, K.C. (2016) Shallow burial diagenesis of dolomite and limestone clumped isotope geochemistry. Geology 44: 467-470.

Google Scholar Profile: bit.ly/izwinkgs

CV

Link to CV

Current as of Sept. 2026