Sedimentary Records of Environmental Change Lab Personnel


Lab Director, Darrell Kaufman 

I study geologic records of environmental changes, particularly those related to climate, that have shaped the Earth’s surface during the recent past and that operate on millennial time scales. 

David Fortin 

David Fortin, Post Doctorate 

After completing a PhD at Queen’s University, Kingston Ontario, and a postdoc at the Institut National de la Recherche Scientitique, Quebec city, I joined the lab as a postdoctoral scholar in the spring of 2013 through the University's Support for Post-doctoral Associates (SPA) Program. My work at NAU primarily focuses on the study of lake sediment records and on the monitoring of sediment fluxes in glacierized watersheds in Alaska.

Cody Routson 

Cody Routson, Post Doctorate 

I research, develop, and use natural climate archives to extend observational records, establish baseline conditions, and characterize the climate system and risks of climate-related natural hazards. My post-doctoral research is focused on Northern Hemisphere climate drivers, including Arctic weather patterns and sea ice fluctuation. Arctic sea-ice loss has major implications for both local and hemispheric climate. My work helps characterize the risk of extreme events and inform adaptation strategies to cope with climate change.

 Katherine Cooper Red Mountain 

Lab Manager, Katherine Whitacre 

I attained my Master’s degree in Environmental and Soil Science from the University of Tennessee, and currently manage both the Sedimentary Records of Environmental Change lab, and the Amino Acid Geochronology lab. I am interested in the study of amino acid racemization in foraminifera.

Graduate Students


Rebecca Ellerbroek, Geology

I am a graduate student in NAU's geology program, where I am using water isotopes to determine relative contributions of rain, snow, and glacial melt into an Arctic lake system. I received my bachelor's degree in art and geology from Cornell College in Iowa; my undergraduate research investigated ENSO effects on monsoon precipitation using Australian speleothems.


Stacy Kish, Earth Sciences and Environmental Sustainability

I am a Doctoral student in the School of Earth Sciences and Environmental Sustainability at NAU.  I received my Master’s degree from Oregon State University where I examined ocean sediment to reconstruct climate in the eastern Equatorial Pacific for the past 160 thousand years. My current research focuses on developing the paleoclimate record from sediment obtained from Lake Peters, located in the Brooks Range of Alaska.

   Doug Steen  

Doug Steen, Geology 

I am a Master’s student in the Geology program at NAU.  My research interests include interpreting recent climatic and environmental changes from proxies within lacustrine sediment.  My current research focuses on developing a record of paleomagnetism and environmental magnetism for sediment cores from Cascade and Shainin lakes in the north-central Brooks Range of Alaska.

Research and Lab Assistants

Monique Belanger 

Monique Belanger, Environmental Science and Policy Master's Student   

I am a graduate student in Environmental Science and Policy with an emphasis on Paleoenvironments. My research interests are using lacustrine sediments to evaluate Holocene climate change. My current research is focused on carbonate and pollen records from a small post-glacial lake in Snowmass, Colorado.

 Alec Soderberg 

Alec Soderberg, Post-Baccalaureate

I attained my undergraduate degree in Geology from Northern Arizona University. I am interested in Geochronology and Glaciology. Here at the lab I help prepare samples for amino acid geochronology and biogenic silica analysis.