Department of Geological and Atmospheric Sciences (GE-AT)

Stable Isotope Paleo Environments Research Group (SIPERG)

Why study past environments?


We try to understand how the atmosphere and oceans behaved in the past. By doing this, we can better document the natural range of variability in these systems. This allows us to better understand the impacts global change might bring due to increased anthropogenic forcing.

Geochemical tools for reconstructing past climates and environments:

There are many ways and methods to investigate past climates and environments. Of these methods, stable isotope geochemistry is perhaps one of the most powerful and reliable tools.





What is sclerochronology?


Sclerochronology is considered by many to be the aquatic equivalent of dendrochronology. This powerful method is helping to unlock high-resolution marine archives (e.g., corals, corallines, mollusks, otoliths) for paleoclimate and paleoecology studies. Sclerochronological techniques are commonly used in freshwater environments as well.




SIPERG News: 10/18/2013

Stalagmites and Paleoclimate

Rhawn Denniston and colleagues reconstruct a record of Indonesian-Australian summer monsoon conditions for the Holocene

Clams and Paleoclimate

Surface changes in the North Atlantic meridional overturning circulation during the last millennium

Iowa State researchers study clam shells for clues to the Atlantic’s climate history

SIPERG- looking into the past to understand the future.