USGS - science for a changing world

Pacific Northwest Geologic Mapping and Urban Hazards

Shannon Mahan

Geochronologist - Geologist

U.S. Geological Survey
Box 25046 M. S. 974
Denver CO 80225

Telephone- (303) 236-7928
Fax- (303) 236-5556


Research into luminescence dating of young (<700 Ka) geologic materials in the western US. Supervisor of USGS Luminescence Dating laboratory, which has been in Denver, Colorado since 1992. The lab offers a full range of thermoluminescence, optically stimulated luminescence dating and other techniques using both Daybreak and Riso systems.


Shannon's current work includes


USGS Central Region capabilities/geochronology

Sample Preparation


This site is maintained by the Pacific Northwest Urban Corridor Geologic Mapping Project, part of the Geology, Minerals, Energy and Geophysics Science Center

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