Tom Heller at a recent blow-out in a dune in southwestern Kansas that exposes a paleosol. May 2010
Recording a section of eolian sand from a stream-cut sand dune along Two Buttes Creek, southwest of Holly, Colorado.
May 2010 - Photo by Tom. Heller
Survey in Equality Cave, near Harrisburg, Illinois. Photo by Tony Schmitt
Exposure of proglacial lacustrine sediments over diamicton along Mill Creek Indiana
Assisting on a study of blind fish in Mexico. Photo by Jon Jasper