Ian Z. Winkelstern

218a Padnos Hall of Science
1 Campus Drive
Allendale, MI  49401

[email protected]



Our paleoclimate research was recently featured in this 2 minute video: https://youtu.be/j3c6hfYYxgk

With a GV Magazine feature story here:  https://www.gvsu.edu/gvmagazine/fossil-clues.htm



If you are a GV student interested in climate, sedimentology, or geochemical research, please reach out! 

Opportunities are available for research projects.

Winkelstern field headshot
Fieldwork in SC

Current Funding

NSF Award #1903389: Interglacial Climate in Bermuda and Beyond

In collaboration with the University of Michigan. Funding through 2023. 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 2024. 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

Grand Ledge rocks
Field camp


Geo 100: Environmental Geology

Geo 103: Living with the Great Lakes

Geo 105: Oceans

Geo 111: Exploring the Earth

Geo 175: Research Tools for Geosciences

Geo 312: Sedimentation - Stratigraphy

Geo 315: Geological Field Methods

Geo 111 in the ravines
Field Campsite

Selected Publications

Zhang, J., Petersen, S., Winkelstern, I, Lohmann, K. (2021) Seasonally Variable Aquifer Discharge and Cooler Climate in Bermuda During the Last Interglacial Revealed by Subannual Clumped Isotope Analysis. Paleoceanography and Paleoclimatology 36 (6)

Winkelstern, I. Z., Lohmann, K.C., Rowe, M., Defliese, W., Petersen, S., and Brewer, A. (2017) Meltwater Pulse Recorded in Last Interglacial Mollusk Shells from Bermuda. Paleoceanography 32: 132-145.

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

Winkelstern, I. Z., Kaczmarek, S. E., Lohmann, K. C, and Humphrey, J. (2016) Calibration of dolomite clumped isotope thermometry. Chemical Geology 443: 32-38.

Winkelstern, I.Z., Surge, D., Hudley, J. (2013) Multi-proxy sclerochronological evidence for Plio-Pleistocene regional warmth: US Mid Atlantic Coastal Plain. Palaios 28: 649-660.

Google Scholar Profile: https://scholar.google.com/citations?user=sR1dVVoAAAAJ&hl=en  

Teaching outcrop, Wyoming
Talk for Volunteers at Frederik Meijer Gardens, 2022

Talk for Volunteers at Frederik Meijer Gardens, 2022

Field work in South Carolina

Field work in South Carolina

Field work in Bermuda

Field work in Bermuda

Page last modified November 9, 2022