Soil Geography of the USA

Prof. James Bockheim is an international renown Professor in Soil Sciences at the University of Wisconsin in Madison (USA). He is specialized in pedology, biogeochemistry, forest soils, polar and alpine soils. His research interests include soils in Antarctica, paleoenvironments in Patagonia, soil properties studies to detect fault ages in southern California etc. He has been supervising 14 PhDs and in 2009, he received the Soil Science Society of America-New Zealand Soil Science Society Award.

• Introduction.- Methods.- Anthropic and Plaggen Epipedons.- Melanic Epipedon.- Mollic Epipedon.- Umbric Epipedon.- Ochric Epipedon.- Histic and Folistic Epipedons.- Agric Horizon.- Albic Horizon.- Argillic, Kandic and Natric Horizons.- Calcic and Petrocalcic Horizons.- Cambic Horizon.- Duripan Horizon.- Fragipan Horizon.- Glossic Horizon.- Gypic and Petrogypsic Horizons.- Ortstein and Placic Horizons.- Oxic Horizon.- Salic Horizon.- Sombric Horizon.- Spodic Horizon.- Ultramafic Soils.- Soils with Lamellae.- Soils with Plinthite.- Summary.- Future of Soil Taxonomy.