Arizona Geological Society

December 2013 - Stephen Jackson, Director of the U. S. Department of the Interior Southwest Climate Science Center, Looking forward from the past:  Ecological impacts of climate change through the lens of history

November 2013 - Malcolm Siegel, LJS Consulting, Inc. and School of Medicine, University of New Mexico, Uranium Mining in the American Southwest:  Can Medical Geologists Ask the Right Questions

October 2013 - Mark Logsdon, Principal Geochemist, Geochimica, Inc., What Does "Perpetual" Management and Treatment Mean?  Toward a Framework for Determining an Appropriate Period-of-Performance of Management of Reactive, Sulfide-Bearing Mine Wastes

September 2013 - Peter Reiners, Professor, Department of Geosciences, University of Arizona, Geochronology of Secondary Fe- and Mn-oxides in Bedrock

August 2013 - Bill Stavast, Senior Geologist, Freeport-McMoRan Copper & Gold, Inc., The Safford Mine:  What we have learned since production began

July 2013 - Lukas Zurcher, Research Geologist, U. S. Geological Survey, Tectono-Magmatic Setting and Distribution of Porphyry Copper Systems in Central Tethys Region of Turkey, the Caucasus, Iran, and southern Pakistan

June 2013 - Steven Van Nort, Consultant, VANE Minerals, Gold Fever - The Bre-X/Busang Story

May 2013 - Jon Spencer, Senior Geologist, Arizona Geological Survey, Federal lands and mineral resources:  Colorado Plateau uranium deposits and the Sonoran Desert Heritage proposal

April 2013 - Robert S. Hildebrand, Research Associate, Department of Geology, University of California at Davis, West-dipping Subduction and the Mesozoic Assembly of the North American Cordillera

March 2013 - Isabel Fay, Ph.D. Candidate, University of Arizona, Georgius Agricola, De Re Metallica, and the Development of Earth Science

February 2013 - Peter G. Vikre, Research Geologist, U. S. Geological Survey, Succession of Laramide magmatic and magmatic-hydrothermal events in the Patagonia Mountains, Santa Cruz County, Arizona

January 2013 - Paul G. Spry, Professor of Economic Geology, Iowa State University, Broken Hill-type Pb-Zn-Ag deposits: Classification and Genesis

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