THE FILE 20,000+ 35mm and high-resolution digital images.

OVERVIEW Natural science and wilderness photography, with a special emphasis on geology.

GEOLOGY All facets of geology, including active tectonics, environmental and engineering geology, fossils, glaciation, groundwater, igneous geology, landforms, metamorphism, minerals, resources, sedimentary features, structural geology, weathering and erosion. Images from the field, aerials and studio photography.

AERIALS Images throughout the western United States of outstanding geological and geographical features.

WILDERNESS As a field geologist, I have had much opportunity for backcountry photography.

SPECIALTIES Geological images, well-suited to textbooks and other instructional media.

GEOGRAPHIC AREAS United States: All western states, including Hawaii and Alaska; southwestern Florida; parts of New England. National Parks: Extensive coverage of all western national parks, especially Death Valley and Canyonlands. Canada: Banff, Jasper, Yoho NPs, Vancouver Island. Great Britain: England, Wales, Scotland. Kyrgyzstan: Extensive collection of the geology, landscape and people.

CREDITS Magazines-Author/Photographer: "Geological Landscapes of Death Valley." Textbooks: Multiple images in most current physical geology textbooks. Book-Author/Photographer: Geology of Death Valley National Park. Book Covers: Journal of Geoscience Education, Geology, Earth Science Reviews, more. Posters: Evolution of Death Valley.

RELATED CREDENTIALS/SKILLS PhD in geology with 20+ years of experience in the field.