Ralph J. Roberts Distinguished Lecture Series

In 1995 Ralph Roberts made a donation to the Mackay School of Mines with the intent of starting a lecture series in economic geology that would complement the CREG program. Ralph Roberts, a pioneering geologist formerly with the U. S. Geological Survey , is credited with pointing out the potential for carbonate-hosted disseminated gold deposits in what is now the Carlin Trend. Lectures are typically given in late April or early May on UNR’s campus.

Jean Cline | Lecture Series 2013

Jean Cline, economic geology professor from the University of Nevada Las Vegas giving the nineteenth Ralph J. Roberts Distinguished Lecture in Economic Geology in 2013.

Past Lectures


Brian Rusk | Western Washington University

Hydrothermal Fluid Evolution in Porphyry-Type Ore Deposits


Jeffery Hedenquist | Consultant

Transitions from the Epithermal Environment to the Tops of Porphyry Deposits


Peter Vikre | U.S. Geological Survey

Diverse Mineral Deposits in the Humboldt Range, Pershing County, Nevada: A 250th Million Year Record of Magmatism, Metasomatism, and Tectonism


Adam Simon| University of Michigan

Critical Controls on the Mass Transfer of Metals from Magmas to Ore Deposits


Stuart Simmons | Consultant

Spatial and Temporal Variations in Epithermal Ore-Forming Processes


Jean Cline | Professor, University of Nevada Las Vegas

Ore Deposition in Carlin-Type Gold Deposits: Studies of Sample Transects from Dead Rock to High Grade


Rich Goldfarb | U.S. Geological Survey

Tectonics and Gold Metallogeny


Glen Masterman | Vice President Exploration, Kinross Gold

The Rosario Porphyry Cu-Mo deposit, Northern Chile: Hypogene Upgrading during Gravitational Collapse of the Domeyko Cordillera


John Dilles | Professor, Oregon State University

Lessons Learned from Butte: Research Applied to Exploration and Mining


Jim Saunders | Professor, Auburn University

Bonanza Epithermal Au-Ag Ores related to the Early (mid-Miocene) Yellowstone Hotspot, Northern Great Basin


Peter Megaw | President, IMDEX

Exploration and Development of Excellon Resources Platosa Bonanza Ag-Pb-Zn Manto Deposit, Durango, Mexico


Doug McGibbon | Chief Geologist Marigold Mine, Glamis Gold

Glamis Marigold Mine: A Recap of nearly 20 Years of Evolving Concepts


Patrick Highsmith | Senior Geologist, New Business Opportunities, Newmont Mining

Urgency: Fuel for the Changing Face of Exploration


Steve Enders | Vice-President Exploration, Newmont Mining

Meeting Quarter-Century Exploration Requirements in a Quarterly Results Business World


John Muntean | Senior Geologist, Placer Dome Exploration

The Porphyry-Epithermal Transition: Examples from the Maricunga Belt, Northern Chile


Bill Chavez | Professor of Minerals Engineering, New Mexico Tech

Oxidation and Metals Transport: Supergene Accumulation Profiles developed from the Weathering of Porphyry Copper Systems


J. Alan Coope | Exploration Geochemist

Geochemical Exploration: Its Expanding Potential


David Lowell | Geologist-Consultant, Lowell Mineral Exploration

How Ore Bodies are Found


Ted Theodore | Geologist, U.S. Geological Survey

Implications of Regional Geology and Geochemistry in the Northern Carlin Trend, Southern Tuscarora Mountains, Nevada


Lewis Teal | Regional Geologist, Newmont Mining

Geologic Overview of the Carlin-Trend Gold Deposits and Carlin-Type Deposits in Southern China


Andy Wallace | Exploration Manager, Cordex Exploration

25 Myths of Nevada Gold Exploration


Keith Bettles | Exploration Manager, Barrick Goldstrike
Larry Kornze | General Manager Exploration Mexico and Central

Geology and Exploration History of the Goldstrike Property, Carlin Trend, Nevada


Al Hofstra | Geologist, U.S. Geological Survey

Age Constraints on Carlin-Type Gold Deposits: Lessons from Jerritt Canyon


Odin Christensen | Chief Geologist, Newmont Mining

Carlin-Type Sedimentary-Rock Hosted Gold Deposits in Nevada and China: Similar rocks – Worlds Apart