Comparison of methods for estimating earth resistivity from airborne electromagnetic measurements
Publisher – Elsevier, 2000. Journal of Applied Geophysics 45 (2000) 239-259 Authors – Les P. Beard*, Geological Survey of Norway, Leiv Eirikssons vei 39 N-7491 Trondheim, Norway Paper – [pdf] Comparison_of_AEM_inversion_methods_JAG_LPB_2000 Abstract
CSAMT Geophysical Exploration in the Vicinity of IMMSA Mine at Taxco, Guerrero, Mexico
Publisher – Zonge, 2001. Authors – E.V. Reed, Zonge International, Tucson, Arizona, U.S.A. S. Garza Blackaller, IMMSA-Unidad Taxco, Guerrero, Mexico. Case Study – [pdf] MIN_Taxco_v4 Introduction
Geophysical Reinterpretation to Identify New Drill Targets of the Round Top Cu-Mo-Ag Deposit, Illinois Creek District
Publisher – Zonge, 2010. Presented at the 2010 Alaska Miner’s Association Convention, Anchorage, Alaska. Alaska Miner, 2011. Authors – Kit Marrs, Western Alaska Copper & Gold Company; Nicole Pendrigh, Zonge Engineering, Denver, Colorado, U.S.A. Scott Urquhart, Zonge Engineering, Tucson, Arizona, U.S.A. Paper – (includes images) [pdf] MIN_GP_Reinterpretation_of_Round_Top_v02-24-11 Article – [pdf] MIN_AMA-January Geophysical Reinterpretation_article Abstract
A Comparison of Electrode Arrays in IP Surveying
Publisher – Presented at the Society of Mining Engineers AIME Annual Meeting, San Francisco, California, February, 1972. Authors – John S. Sumner, Professor of Geophysics, Laboratory of Geophysics and College of Mines, University of Arizona, Tucson, Arizona, U.S.A. Paper – [pdf] ElectrodeArraysIP_Sumner_1972 Introduction Summary
Use of Micro-earthquake Recordings as an Exploration Tool for Geothermal Energy
The correlation of microearthquakes with geothermal energy is empirical and yet effective as an exploration tool. Many geothermal explorationists consider the presence of microearthquakes on a prospect as a favorable indication of geothermal energy and their absence as negative. Such a “yes-no” categorization is a gross misuse of the tool. Additional information available from a modern microearthquake […]
The Evolving Role of MT in Geothermal Exploration at Newberry Volcano, Oregon
Publisher — Proceedings: Thirty-Eighth Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, February 11-13, 2013. SGP-TR-198 Authors — Al Waibel, Columbia Geoscience, Hillsboro, Oregon, USA; Les Beard*, Zonge International, Tucson, Arizona, USA; and Gary Oppliger, Zonge International, Reno, Nevada, USA. Paper – [pdf] GEOTHRML_Waibel Abstract
Siting Shallow Groundwater Wells with the Aid of Geophysics
Publisher — Environmental and Engineering Geophysical Society (EEGS), 2010 Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP) proceedings. Authors — Norman R. Carlson, Zonge Engineering & Research Organization, Inc., Tucson, AZ; Paul G. Ivancie, AMEC Earth and Environmental, Inc., Lakewood, CO; Phil C. Sirles, Zonge Geosciences, Inc., Lakewood, CO. Paper —[pdf] […]
Geophysical Investigations for Groundwater in the Lower Klamath Lake Basin, Oregon
Publisher — Environmental and Engineering Geophysical Society (EEGS), 2003 Symposium on Applications of Geophysics to Engineering and Environmental Problems (SAGEEP) proceedings. Authors — Rowland B. French, Northwest Geophysical Associates, Inc., Corvallis, Oregon; Margaret D. Jenks, Oregon Dept. of Geology and Mineral Industries, Portland, Oregon; Gerald G. Connard, Northwest Geophysical Associates, Inc., Corvallis, Oregon Paper — […]
50 Years State of the Art in IP and Complex Resistivity
It is worth looking back to see how far the field of geophysics exploration has come. Presented in 2003, this paper was a combination of retrospective and forecast in which Ken Zonge outlined industry progress after a renewed interest in the IP method in the early 1950s. He then summarized Zonge company progress over the […]
Applications of Controlled-Source and Natural-Source AMT to Groundwater Exploration
Publisher — Environmental and Engineering Geophysical Society (EEGS), 2005 Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP) proceedings. Authors — Norman R. Carlson*, Zonge Engineering & Research Organization, Tucson, Arizona; Phillip M. Paski, HydroSystems, Inc., Tempe, Arizona; Scott A. Urquhart*, Zonge Engineering & Research Organization, Tucson, Arizona. Paper — [pdf] GRW_SAGEEP05Groundwater […]