Geology & Earth Science

Geology & Earth Science Experts

Allan Kolker

The U.S. Geological Survey
United States Virgin Islands


llan Kolker is a Research Geologist at the USGS Eastern Energy Resources Science Center in Reston, VA. His expertise in geochemistry of coal, and trace-element geochemistry, is used in studies of coal quality, toxic inorganic substances in the environment, and human health effects from energy resources and use. He is a Fellow of the Geological Society of America and serves on the editorial board of the international journalApplied Geochemistry, and on the board of Environmental Geochemistry and Health. He earned his Ph.D. in geochemistry from the State University of New York at Stony Brook and served on the geology faculty at the University of Nebraska-Lincoln prior to joining the USGS in 1996.

Research Interest

coal resources energy resources atmospheric deposition (chemical & particulate) health and disease human impacts


  • Deonarine, A., Kolker, A., Doughten, M., Bailoo, J.D., and Holland, J.T., Arsenic speciation in bituminous coal fly ash and transformations in response to redox conditions: Submitted to Environmental Science and Technology.

  • Kolker, Allan, 2016, Mercury in U.S. Coal- Priorities for New USGS Studies: U.S. Geological Survey Open File Report, in press.

  • Kolker, Allan, Senior, Constance, van Alphen, Chris, Koenig, Alan, and Geboy, Nick, 2016, Mercury and trace element distribution in density separates of a South African Highveld (#4) coal: Implications for mercury reduction and preparation of coal for export: International Journal of Coal Geology.

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