ISGS OSL Dating Laboratory Opens
After two years of preparation, the Illinois State Geological Survey (ISGS) Optical Stimulated Luminescence (OSL) Laboratory is up and running and available for analysis. This research laboratory is able to provide OSL ages for eolian deposits and fluvial sediments younger than Illinoian age. All tests have been completed, including preheat plateau, thermal transfer, dose recovery, and extended SAR protocol. The laboratory uses a new Riso TL/OSL DA-20 and two low background Ge gamma spectrometers in the analyses. Hong Wang, director of the new laboratory, presented information about the laboratory and OSL dating results at the Sixth New World OSL Dating Conference, held at the University of Washington, Seattle, in October 2009.