Jeff Wynn, PhD

Research geophysicist working on electrical imaging of volcanoes; mineral resource assessments in Central Asia and Venezuela; geologic mapping in Venezuela and Mexico; oil pollution tracking in the deep ocean, below the seafloor, and river bottom Superfund sites; geophysical archeological prospection, and hypervelocity asteroid impact physics. 

Biography

EDUCATION:

A.B. 1968 University of California, Berkeley (Physics, Math)

M.S. 1970 University of Illinois (Solid-State Physics)

PhD 1974 University of Arizona (Geoscience, Electrical Engineering)            

 

EMPLOYMENT:                

1971-72: AMAX Exploration, Tucson, AZ (Geophysicist)

1972-75: Zonge Engineering, Tucson, AZ (Co-Founder, Vice President for Research & Development)

1975-Present: U.S. Geological Survey (Research Geophysicist: Denver, Reston, Vancouver):

   1987-95: International mission chief: Venezuela, Saudi Arabia

   2002-07: Chief Scientist, Volcano Hazards, Vancouver, WA

 

LANGUAGES:

Fluent in Spanish

Working Ability in French (reading, conversational), Arabic (conversational), and Russian (reading)

 

OUTSIDE ACTIVITIES:

- President, Environmental & Engineering Geophysical Society (2002-03)

- Adjunct Full Professor (University of Maryland, The George Washington University, KAU-Jeddah)

 

CERTIFICATIONS, AWARDS, HONORS:

- DOI Meritorious Service Award for “Excellence in Scientific Leadership and Management”.

- Alumnus, Federal Executive Institute (LDS-324).

- The International Astronomical Union named a Mars-crossing asteroid "9564 Jeffwynn" in recognition for contributions to asteroid impact science.

- Awards for Invention, US Patents "Wynn 6,236,211 B1", "Wynn 6,236,212 B1", "Wynn 8,463,568 B1"

 

TECHNICAL EXPERIENCE (Represented by peer-reviewed publications):

- Geophysics: near-surface imaging, deep-structure volcano mapping, technology development, mapping groundwater in 3D.

- Geology: geologic mapping (Venezuela, Mexico).

- Mineral Resource Appraisals (Central Asia, Venezuela).

- Astronomy: Wabar impact site; the physics of hypervelocity asteroid impacts.

- Archeology: non-destructive geophysical archeological prospection and site mapping.

- Ocean Engineering: three patents for marine induced polarization, seawater capacitance, now being commercialized.

- Hydrology: mapping groundwater in 3D beneath arid basins in Arizona and Mexico, and beneath Mount St Helens.

- Volcanology: installation/monitoring of volcano-seismic networks (Makkah, Madinah), technology development, 3D subsurface volcano imaging.

 

MANAGEMENT/LEADERSHIP EXPERIENCE:

- Vice president (Operations, R&D), Zonge Geosciences, Tucson, AZ 

- Several rotational management positions within the USGS (Geochemistry & Geophysics, Mineral Resources, 4 years)

- International mission chief assignments (Venezuela, 3 years; Saudi Arabia, 4 years)

- Chief Scientist for Volcano Hazards (5 years)

- DOI's Meritorious Service Award for “Excellence in Scientific Leadership and Management”

- Alumnus, Federal Executive Institute (LDS-324).

 

EXTERNAL PROFESSIONAL:

- Associate Editor and acting Editor-in-Chief, "Exploration Geophysics" (a joint Australian, Japanese, and Korean science journal)

- Special Editor and Associate Editor of "GEOPHYSICS"

General Chair for SAGEEP-2000, the annual scientific meeting of the Environmental and Engineering Geophysical Society, Washington, DC, 20-24 February, 2000. 

- President, Environmental & Engineering Geophysical Society, 2002-2003.

- Adjunct (full) professor, University of Maryland (College Park, Maryland).

- Full professorial lecturer, The George Washington University (Washington, DC).

- Adjunct (full) professor and External Examiner, King Abdulaziz University, Jeddah, Saudi Arabia.

 

PUBLIC OUTREACH:

- Filmed by BBC/Discovery Channel, BBC World Service radio, BBC Horizon Television, and Brazil Idea TV about asteroid impacts. 

- Interviewed on Fox TV (Greta VanSusteren).

- Interviewed on Peruvian TV (in Spanish) about Mount St Helens.  

- Vice President, American Jujitsu Association.     

 

COMMUNITY SERVICE:

- Teaches women’s self-defense and advanced Jujitsu and Taiho-Jutsu classes as a community service at:

   YWCA of Clark County, Vancouver, WA

   Firstenburg Community Center, Vancouver, WA

   Washington State Department of Revenue, Vancouver, WA

   Clark College Self Defense Instructor, Vancouver, WA

   Washington State University Self Defense Instructor, Vancouver, WA

 

SAFETY:

- Certificate: University of Maryland Medical School Advanced Trauma Life Support for MD's course. 

- National Safety Council Certified CPR/AED Instructor.

- Cardiac emergency response team co-coordinator, USGS National Center (1998-2002).

 

PUBLICATIONS

A: Key Selected Publications with Summaries

 

Name: The Future of Heavy Crude and Tar Sands

Citation: Meyer, R. F., Wynn, J. C., and Olson, J. C., 1984, The Future of Heavy Crude and Tar Sands: McGraw-Hill, New York, 1338 pages (UNITAR BOOK).

Summary: This book covers all aspects of heavy crude and tar sand deposits, from resource estimates to environmental and economic considerations. It is believed that ifthe cost of oil rises and remains high enough, these vast deposits will become economic - and could power the industrial world for centuries if carbon emissions were not an issue. 

Download: File (size: 16 MB) http://repository.icse.utah.edu/dspace/bitstream/123456789/7906/1/Utah-Tar-454.pdf

 

Name: Non-Intrusive Mapping of Archaeological Sites using Self Potential

Citation: Wynn, J. C., and Sherwood, S. I., 1984, The self-potential (SP) method: an inexpensive reconnaissance archaeological mapping tool: Journal of Field Archaeology, 11, no. 2, p. 195-204.

Summary: This paper demonstrates an inexpensive means to rapidly map archaeological sites without excavating them. The instrumentation and interpretations shown here means that nearly anyone, using off-the shelf equipment, can effectively survey and evaluate an archaeological site. Not online; PDF on request.

Download: (File size 1.4 MB): https://www.academia.edu/3987020/Non-intrusive_mapping_of_archaeological_sites_using_self-potential_SP_

 

Name: Geologic Map of Southern Venezuela

Citation: Wynn, Jeffrey C., and Cox, Dennis P., 1991, A geologic and tectonic map of the Venezuelan Guayana Shield (1: 1,000,000 scale) with a revised stratigraphic column for the Venezuelan Guayana Shield: USGS Administrative Report; compilation with 43 contributors, two plates, and a stratigraphic interpretive description: U.S. Geological Survey Bulletin 2062.

Summary: This is the first complete and detailed 3D geologic map of the nearly road-less, jungle-covered, southern half of Venezuela.  It represents the first geologic coverage of this northern tier of the great Amazonas forest, and provides three-dimensional structural and even chemical information based on gravity, magnetic, and radiometric surveys.

Download: File (size: 40 MB) http://pubs.usgs.gov/bul/2062/report.pdf

 

Name: City Buster - The Wabar Meteorite Impact Event

Citation: Wynn, Jeffrey C., and Shoemaker, Eugene M., 1998, The Day the Sands Caught Fire: Scientific American, 279, no. 5, pp. 36-45 (November 1998 issue).

GERMAN TRANSLATION: Wynn, Jeffrey C; Shoemaker, Eugene M, 1999, Flammendes Inferno in der Wueste: Spektrum der Wissenschaft, vol.1999, no.2, pp.30-37.

POLISH TRANSLATION: Wynn, J.C., and Shoemaker, E.M., 1999, Kiedy piaski zajaoenia y ogniem ("When sands flash of fire"): Oewiat Nauki, p. 21 - 27.

FRENCH TRANSLATION: Wynn, J, and Shoemaker, E., 1999, Le jour ou le ciel senflamma - la recherche des meteorites: Pour la Science, vol. 255, p. 34-41.

SPANISH TRANSLATION: Wynn, J.C., and Shoemaker, E.M., 1999, Meteoritos en el desierto: Investigacions y Ciencia, 268, p. 14-21

Summary: This paper shows that an asteroid the size of your living room can impact the Earth with the devastating explosive effect of a Hiroshima-sized atomic bomb. A "city buster" like this is far more common in history than scientists had previously suspected, and they are so small that they cannot realistically be detected before they hit.

Download: File (size: 5.5 MB) https://www.academia.edu/3987005/The_Day_the_Sands_Caught_Fire

 

Name: Mineral Resource Appraisal and New Deposit-Keyed Geologic Map of Southern Venezuela

Citation: Wynn, J.C., 1999, Tectonics and mineral potential of the Amazonas and southwestern Bolivar States, Venezuela: Tectonics and Metallogeny, 7, no. 2, p. 95-112.

Summary: This paper develops a new mineral deposit framework based on known deposit model timelines - when particular types of deposits were formed in Earth's history -then combines it with a new stratigraphic column and the existing geologic map developed by the author. The result is a predictive mineral resource appraisal for undiscovered deposits in southern Venezuela. 

Download: (File size 7.5 MB): https://www.academia.edu/3993312/Tectonics_and_the_mineral_potential_of_the_Amazonas_and_southwestern_Bolivar_States_Venezuela

 

Name: A Resource Assessment of Potash in Central Asia [Book]

Citation: Wynn, Jeff, Orris, G.J., Dunlap, Pamela, Cocker, M.D., and Bliss, J.D., 2016, Geology and undiscovered resource assessment of the potash-bearing Central Asia Salt Basin, Turkmenistan, Uzbekistan, Tajikistan, and Afghanistan: U.S. Geological Survey Scientific Investigations Report SIR 2010–5090–AA, 106 p., and spatial data, 122 pages, 35 figures, 37 tables.

Summary: This paper develops a new mineral resource assessment technology for stratiform and halokinetic potash deposits in vast sedimentary, oil-and-gas-hosting sedimentary basins in Central Asia. We then calculate the undiscovered potash remaining in place at economic depths (to 3 km).

Download: (File size 8 MB): http://dx.doi.org/10.3133/sir20105090AA

 

Name: Geology and Geophysics of the Southern Alaska Panhandle

Citation: Wynn, J.C., R.P. Kucks, and D.J. Grybeck, 1999, An interpretation of the aeromagnetic and gravity data and derivative maps of the Craig and Dixon Entrance 1-degree by 3-degree quadrangles and the western edges of the Ketchikan and Prince Rupert quadrangles, southeastern Alaska: US Geological Survey Digital Data Series-56, CD-ROM publication: about 250 Mbytes of data, models, maps, and interpretative text.

Summary: This digital publication makes available the magnetic and gravity data and maps of the Craig and Dixon Entrance 1: 250,000 quadrangles in SE Alaska. It also includes geophysical models that show the three dimensional character of the accreted terrains that have been "punched through" by subsequent intrusive bodies.

Download: File (size: 250 MB): https://pubs.er.usgs.gov/publication/ds56

 

Name: Mapping an Asteroid Impact Site with a Magnetometer

Citation: Wynn, J.C., 2002, Mapping an iron meteorite impact site with a magnetometer, and implications for the probability of a catastrophic impact on Earth: Journal of Environmental & Engineering Geophysics, vol. 7, no. 4 (December 2002), pp. 143-150. 

Summary: This paper uses a high-resolution magnetic survey to demonstrate one of the consequences of a hyper-velocity impact: the asteroid does not just bury itself in the Earth, but instead detonates with its huge kinetic energy burden into an atomic-bomb-sized, stratospheric mushroom cloud, leaving almost nothing of the original bolide in the crater that it thus created. Abstract only online; Full PDF on request.

Download: (File size 5.4 MB): https://www.academia.edu/3994244/Mapping_an_iron_meteorite_impact_site_with_a_magnetometer_and_implications_for_the_probability_of_a_catastrophic_impact_on_Earth

 

Name: Water Crossing the Mexico-US Frontier: Efficient Cooperative Groundwater Exploration Using Geophysical Methods

Citation: Wynn, Jeff, 2002, Evaluating ground water in arid lands using airborne magnetic and airborne electromagnetic methods - an example in the southwestern U.S. and northern Mexico: The Leading Edge, 20, no. 12 (January 2002), pages 62-65.

Download: (File size 1.8 MB): http://tle.geoscienceworld.org/content/21/1/62.full.pdf+html?sid=865b31d9-9770-4a0a-aed0-83e9651ef081

Also:     http://www.zonge.com/PDF _Papers/ AMT Inversion_with_AeroMAG.pdf

Summary: This paper shows how airborne and ground geophysical methods can be combined to rapidly map - with high resolution - where the groundwater lies beneath a large basin straddled by the Mexico-US border. The San Pedro Basin is a critical migratory bird flyway whose survival is tied to groundwater exploitation. This effort is also a showcase for Mexican-US cooperation, where the results are greater than the sum of the individual parts.

 

Name: Geophysical Methods to Map and Monitor Volcanoes

Citation: Wynn, Jeff; Daniel Dzurisin; Carol A. Finn; James P. Kauahikaua; and Richard G. Lahusen, 2006, Application of geophysical methods to volcano monitoring: proceedings volume of the Symposium for the Application of Geophysical Methods to Environmental & Engineering Problems, the annual meeting of the Environmental and Engineering Geophysical Society, Seattle, WA, April 2-6, 2006, p. 174-183.

Summary: This paper summarizes the spectrum of geophysical methods used to map and monitor restless and potentially dangerous volcanoes. Full paper not online; PDF on request.

Download: (File size 1.2 MB): https://www.academia.edu/24131761/Applications_of_Geophysical_Methods_to_Volcano_Monitoring

 

Name: Where is the hot rock and where is the water beneath Mount St Helens volcano

Citation: Wynn, J.C.; Mosbrucker, Adam, Pierce, Herb, and Spicer, Kurt, 2016, Where is the Hot Rock, and Where is the Groundwater – Using CSAMT to Map Beneath and Around Mount St. Helens: Journal of Environmental & Engineering Geophysics, Vol 21, No. 2, p. 79-87, http://dx.doi.org/10.2113/JEEG21.2.79

Summary: How Controlled-Source Audio-Frequency Magneto-Tellurics (CSAMT) can be used to map conductivity in three dimensions beneath a restive-active volcano.

Download: (File size 2.1 MB): https://www.academia.edu/25587947/Where_is_the_Hot_Rock_and_Where_is_the_Ground_Water_Using_CSAMT_to_Map_Beneath_and_Around_Mount_St._Helens

 

Name: 3D Mapping of Groundwater from the Air

Citation: Wynn, Jeff, 2006, Mapping groundwater in three dimensions – an analysis of the airborne geophysical surveys of the upper San Pedro River basin, Cochise County, southeastern Arizona, with an interpretation of where the groundwater lies: US Geological Survey Professional Paper 1674, 46 pages, 23 color figures, 2 color plates.

Summary: This US Geological Survey Professional Paper shows that by using airborne electromagnetic (EM) and magnetic sensors, the groundwater can quickly be mapped in three dimensions beneath a large (~l,000 square kilometers) arid basin - in this case in southern Arizona and northern Mexico. The EM data map the water with 30-meter resolution down to 400 meters depth, while the magnetic data can be converted to depth-to-source to map the complex basement topography (as deep as 1,500 meters). This crystalline basement is effectively the bottom limit of the water saturated basin sediments. The San Pedro River is a major North American migratory bird fly-way, and is closely tied to the groundwater hydrology of the basin. In an area where groundwater withdrawal has huge economic, political, wildlife conservation, and even military implications, the 3D maps provided by this work allow critical decisions to be made based upon real information.

Download: (File size: Screen Resolution: 5 MB, Print: 90 MB) http://pubs.usgs.gov/pp/2006/1674/

 

Name: Rapid and Efficient Mapping of Sub-Seafloor Placer Mineral Deposits, as well as Dispersed Oil from Well Blowouts Drifting Through the Open Ocean

Citation: Wynn, Jeff, Williamson, Mike, and Fleming, John, 2012, Induced polarization for sub-seafloor, deep-ocean mapping: Sea Technology Magazine (invited feature article), September 2012, p. 47-50.

Summary: A new, USGS-patented technology utilizing the physical property of induced polarization, has been successfully used at sea to map large buried tracts of placer heavy minerals, including titanium oxides frequently associated with gold, platinum, and diamonds. Recent laboratory experiments suggest the technology can also be used to map Combined Stormwater Overflow of urban and industrial waste into Puget and Long Island Sounds.

Download: (File size 5.4 MB):  https://profile.usgs.gov/myscience/upload_folder/ci2012Nov0914332834998Sea-Technology_Sept2012.pdf

 

Name: Mapping Seawater Capacitance as a Proxy for Hydrocarbons Drifting in the Deep Ocean

Citation:  Wynn, J.C., and Fleming, J.A., 2012, Seawater capacitance – a promising proxy for mapping and characterizing drifting hydrocarbon plumes in the deep ocean: Ocean Science Online (http://www.ocean-sci-discuss.net/9/2679/2012/osd-9-2679-2012.pdf)

Associated Patent:  Measuring seawater capacitance in three dimensions as well as time: US Patent 8,463,568 B1 “Wynn”.(http://www.google.com/patents/US8463568 )

Summary: A new towed-streamer technology can rapidly map drifting hydrocarbon plumes from well blowouts and leaking pipeline infrastructure, as well as seafloor hydrocarbon seeps in the deep abyssal plain of the south Atlantic Ocean to search for more “Deep Pre-Salt” fields. Laboratory experiments suggest that hydrocarbon plumes can be rapidly mapped in 4D, as well as characterize their real-time biodegradation by tracking bulk droplet size as it correlates with Spectral IP frequency dispersion over time.

Download: (File size 3.1 MB): (http://www.ocean-sci-discuss.net/9/2679/2012/osd-9-2679-2012.pdf)

~~~~~~

B: – Complete Publication List

Wynn, J.C.; Mosbrucker, Adam, Pierce, Herb, and Spicer, Kurt, 2016, Where is the Hot Rock, and Where is the Groundwater – Using CSAMT to Map Beneath and Around Mount St. Helens: Journal of Environmental & Engineering Geophysics, Vol 21, No. 2, p. 79-87. http://dx.doi.org/10.2113/JEEG21.2.79

Cocker, M.D., Orris, G.J., and Dunlap, Pamela, with contributions from Lipin, B.R., Ludington, Steve, Ryan, R.J., Slkowakiewicz, Miroslaw, Spanski, G.T., Wynn, Jeff, and Yang, Chao, in press, Geology and Undiscovered Resource Assessment of the Potash-Bearing Pripyat and Dnieper-Donets Basins, Belarus and Ukraine: U.S. Geological Survey Scientific Investigations Report SIR 2010–5090–BB, and spatial data, https://doi.org/10.3133/sir20105090BB.

Cocker, Mark D.; Greta J. Orris, and Jeff Wynn, 2016, U.S. Geological Survey assessment of global potash production and resources – A significant advancement for global development and a sustainable future: Geological Society of America Special Volume SPE 520, Geoscience for the Public Good and Global Development: Toward a Sustainable Future, Gregory R. Wessel and Jeffrey K. Greenberg, eds., 135 pp. http://dx.doi.org/10.1130/2016.2520(10)

Wynn, Jeff; Mike Williamson, and Jeff Frank, 2016, Detection and quantification of hydrocarbons in sediments: Proceedings of the Oceans’16-Marine Technology Society/IEEE conference in Monterey, CA, 19-23 September, 2016 (4 pages, 8 figures).

Wynn, Jeff, Orris, G.J., Dunlap, Pamela, Cocker, M.D., and Bliss, J.D., 2016, Geology and undiscovered resource assessment of the potash-bearing Central Asia Salt Basin, Turkmenistan, Uzbekistan, Tajikistan, and Afghanistan: U.S. Geological Survey Scientific Investigations Report SIR 2010–5090–AA, and spatial data, 122 pp., 35 figures, 37 tables. http://dx.doi.org/10.3133/sir20105090AA

Cocker, M.D., Dunlap, P.D., Lipin, B.R., Ludington, S.D.,Orris, G.J., Ryan, R.J., Slowakiewicz, Miroslaw, Spanski, G.T., Wynn, J.C., and Yang, Chao, 2016, Global Mineral Resource Assessment - Potash bearing halokinetic salt structures assessment for 150bsK0042b, Dnieper-Donets Basin Upper Devonian, Ukraine: US Geological Survey Scientific Investigations Report 2010-5090-AB, 42 p, 13 figs.

Cocker, M.D. , Dunlap, P.D. , Lipin, B.R. , Ludington, S.D. ,Orris, G.J. , Ryan, R.J. , Slowakiewicz, Miroslaw , Spanski, G.T. , Wynn, J.C. ,and Yang, Chao, 2016, Global Mineral Resource Assessment – Potash-bearing bedded salt assessment for Tract 150bsK0043, Pripyat Devonian Basin, Belarus: US Geological Survey Scientific Investigations Report 2010-5090-AC, 27 p, 9 figs.

Wynn, Jeff, and Pierce, H.A., 2015, Mount St. Helens—controlled-source audio-frequency magnetotelluric (CSAMT) data and inversions: U.S. Geological Survey Data Series 901, http://dx.doi.org/10.3133/ds901   

Wynn, J.C., A. Mosbrucker, H.A. Pierce, and K. R. Spicer, 2015, Imaging Water and Hot Rock Beneath a Volcano Using Controlled-Source Audio-Frequency Magnetotellurics: Extended Abstract, Proceedings, Symposium for the Application of Geophysics to Environmental & Engineering Problems (SAGEEP-2015): Austin, TX, 15 April 2015, 8 pages and 6 figures.

Orris, G.J., Dunlap, Pamela, and Wallis, J.C., 2015, Phosphate occurrence and potential in the region of Afghanistan, including parts of China, Iran, Pakistan, Tajikistan, Turkmenistan, and Uzbekistan, with a section on Geophysics by Jeff Wynn: U.S. Geological Survey Open-File Report 2015-1121, 76 p. http://dx.doi.org/10.3133/ofr20151121

Wynn, J.C.; Williamson, M.A.; Clement, C; Fleming, J; Frank, J, 2015, Seafloor Diamond Exploration, and Seawater Capacitance as a Hydrocarbon Proxy - Applications of Marine Induced Polarization: Proceedings, Underwater Mining Institute 2015 Annual meeting, Tampa, FL, November 1-6, 2015, 6p., 6 figs.

Orris, G.J., Cocker, M.D., Dunlap, P., Wynn, J.C., Spanski, G.T., Briggs, D.A., and Gass, L., with contributions from Bliss, J.D., Bolm, K.S., Yang, C., Lipin, B.R., Ludington, S., Miller, R.J., and Slowakiewicz, M., 2014, Potash—A global overview of evaporite-related potash resources, including spatial databases of deposits, occurrences, and permissive tracts: US Geological Survey Scientific Investigations Report 2010–5090-S, 76 p., and spatial data, http://dx.doi.org/10.3133/sir20105090S  

Wynn, Jeff, 2014, Gravity, magnetic, and radiometric data for Newberry Volcano, Oregon, and vicinity: U.S. Geological Survey Digital Data Series 830, available at http://pubs.usgs.gov/ds/0830/. http://dx.doi.org/10.3133/ds830

Wynn, Jeff, 2014, Paths Through Science: American Geophysical Union, Careers in Science (3 pages). http://sites.agu.org/careers/files/2014/09/Paths-Through-Science-Jeff-Wynn.pdf

Hughes, L., Zonge, L., Van Reed, E., Carlson, N., Lide, C., Urquhart, S., Wynn, J., Young, G., and Roth, J., 2014, Memorials — An appreciation of Kenneth. L. Zonge (1936–2013): The Leading Edge, 33 (03), 354–356, http://dx.doi.org/10.1190/tle33030354.1

Dunlap, Pamela, Orris, G.J., Cocker, M.D., Wynn, J.C., and Spanski, G.T., 2013, Global Mineral Resource Assessment - GIS and metadata, Stratabound Potash tracts: US Geological Survey Scientific Investigations Report 2010-5090-AF, 55 p.

Orris, Greta J., Lipin, Bruce R. Dunlap, Pamela, Cocker, Mark D., Ludington, Stephen D., Ryan, Robert J., Slowakiewciz, Miroslaw, Spanski, Gregory T., Wynn, Jeff, Yang, Chao, and Rohling, Simone, 2013, Global Mineral Resource Assessment - Halokinetic potash assessments for basins in Central Asia, Europe, and western Africa - Potash-bearing halokinetic salt structures assessment for Tract 105bsK0010a, Zechstein A Tract (Glückstadt Graben area), Permian, Germany: US Geological Survey Scientific

Orris, Greta J., Dunlap, Pamela, Cocker, Mark D., and Wynn, Jeff, 2013, Challenges and approaches to assessing industrial minerals – the USGS global potash assessment databases: Poster 236-15, Geological Society of America 125th Annual Meeting, 27-30 October 2013, Denver, CO.

 

Wynn, J.C., 2013, Measuring seawater capacitance in three dimensions as well as time: US Patent “Wynn 8,463,568 B1”, June 11, 2013, 26 pages, 22 claims, 4 figs. [Link]

Orris, Greta J., Dunlap, Pamela, Cocker, Mark D., and Wynn, Jeff, 2013, Challenges and approaches to assessing industrial minerals – the USGS global potash assessment databases: Poster 236-15, Geological Society of America 125th Annual Meeting, 27-30 October 2013, Denver, CO. [Link]

J.C. Wynn and J.A. Fleming, 2012, Seawater capacitance – a promising proxy for mapping and characterizing drifting hydrocarbon plumes in the deep ocean: Ocean Sci., 8, 1099–1104, 2012, www.ocean-sci.net/8/1099/2012/  doi:10.5194/os-8-1099-2012.

Wynn, Jeff; Mike Williamson and John Fleming, 2012, Induced polarization for sub-seafloor, deep-ocean mapping: Sea Technology magazine invited feature article, September 2012, p. 47-50. [Download File]

Wynn, Jeff, Williamson, Mike, Urquhart, Scott, and Fleming, John, 2011, An Open-Water Electrical Geophysical Tool for Mapping Sub-Seafloor Heavy Placer Minerals in 3D and Migrating Hydrocarbon Plumes in 4D: proceedings of the IEEE-Marine Technology Society meeting in Waikaloa, HI, 19-22 September 2011, 6 p. 8 figs.[Download File]

Wynn, J.C., 2010, EM and MT methods for volcanic edifice stability and volcanic eruption prediction: Proceedings Volume, Electromagnetic Studies of Earthquakes and Volcanoes, Chapman University, Orange, CA, 3-6 October 2010, pp. 960-985. [Link]

Wynn, J.C., and Giller, J.F., 2008, Field Demonstrations in Anthropogenic Waste or Unexploded Ordnance Sought for USGS Marine Induced Polarization (IP) Streamer System Technology: USGS Fact Sheet, September 2008, 4 pages. http://pubs.usgs.gov/misc_reports/ipstreamer/IP-Streamer_Wynn-Giller.pdf

Wynn, Jeff, 2006. Mapping Ground Water in Three Dimensions - An Analysis of Airborne Geophysical Surveys of the Upper San Pedro River Basin, Cochise County, Southeastern Arizona. USGS Professional Paper 1674, 46 p., 23 color figures, 2 color plates. [Link]

Wynn, Jeff; Daniel Dzurisin; Carol A. Finn; James P. Kauahikaua; and Richard G. Lahusen, 2006, Application of geophysical methods to volcano monitoring: proceedings volume of the Symposium for the Application of Geophysical Methods to Environmental & Engineering Problems, the annual meeting of the Environmental and Engineering Geophysical Society, Seattle, WA, April 2-6, 2006, p. 174-183. [Download File]

Wynn, J.C.; Gray, Floyd; Nordstrom, T.E.; Liu, Dexin; Reed, E.V.; Villaseñor, F.A.; and Connard, Gerry, 2003, Using analytic signal analysis on aeromagnetic data to constrain AMT inversions, Sonora San Pedro Basin, Mexico: Proceedings CD-ROM, SAGEEP-2003 conference, San Antonio, TX, April 2003, 6 pages. [Download File]

Wynn, J.C.; Mars, J.L.; Gray, Floyd; Schultz, A.P.; Maldonado, F.A.; Villaseñor, F.A.; and Brady-Norman, L.M., 2003, ASTER imagery and aeromagnetic data - powerful tools to aid reconnaissance geologic mapping of the Sierra San José mountain range, northern Sonora State, Mexico: Proceedings CD-ROM, SAGEEP-2003 conference, San Antonio, TX, April 2003, 7 pages. [Download File]

Wynn, Jeff, 2002, Evaluating ground water in arid lands using airborne magnetic and airborne electromagnetic methods - an example in the southwestern U.S. and northern Mexico: The Leading Edge, 20, no. 12 (January 2002), pages 62-65. Also in: http://www.zonge.com/PDF_Papers/AMT_Inversion_with_AeroMAG.pdf

Wynn, J.C., 2002, Mapping an iron meteorite impact site with a magnetometer, and implications for the probability of a catastrophic impact on Earth: Journal of Environmental & Engineering Geophysics, vol. 7, no. 4 (December 2002), pp. 143-150. [Download File]

Wynn, Jeff C.; Doucette, Jon P.; Karl, Sue M.; McCafferty, Anne E.; Smith, Bruce D.; Bittenbender, Peter, 2001. Geophysical signatures used to constrain geologic mapping; the search for VMS deposits in Southeast Alaska. Open-File Report 2001-44, CD-ROM. [Link]

Wynn, Jeffrey C., 2001. Mapping groundwater in three dimensions; an analysis of the airborne geophysical surveys of the upper San Pedro River basin, Cochise County, southeastern Arizona with an interpretation of where the groundwater lies: US Geological Survey Open-File Report 2000-517, 46 p., 2 over-size sheets.

Wynn, Jeff, 2001, Geophysics in the U.S. Geological Survey: Invited article for the Near Surface Geophysics Newsletter (http://nsgs.seg.org/Newsletter/JanFeb2001.pdf) January 2001 issue, p. 7 - 22.

Wynn, Jeffrey C., 2000. A ground electromagnetic survey used to map sulfides and acid sulfate ground waters at the abandoned Cabin Branch Mine, Prince William Forest Park, northern Virginia gold-pyrite belt: US Geological Survey Open-File Report 2000-360, 5 p., 9 maps. [Link]

Wynn, J. C.; Kucks, R. P.; Grybeck, D. J., 1999. An interpretation of the aeromagnetic and gravity data and derivative maps of the Craig and Dixon Entrance 1-degree by 3-degree quadrangles and the western edges of the Ketchikan and Prince Rupert quadrangles, Southeastern Alaska: US Geological Survey Open-File Report 99-316, CD-ROM.

Bultman, Mark W.; Gettings, Mark E.; Wynn, Jeff C., 1999. An interpretation of the 1997 airborne electromagnetic (AEM) survey, Fort Huachuca vicinity, Cochise County, Arizona. Open-File Report 99-7-B [Link]

Bultman, M. W.; Gettings, M. E.; Wynn, Jeff, 1999. An interpretation of the 1997 airborne electromagnetic (AEM) survey, Fort Huachuca vicinity, Cochise County, Arizona: U.S. Geological Survey Open-File Report 99-7-A, CD-ROM. [Link]

Wynn, Jeffrey C.; Kucks, R. P.; Grybeck, D. J., 1999. Aeromagnetic, gravity anomaly, and derivative maps of the Craig and Dixon Entrance 1-degree by 3-degree quadrangles of southeastern Alaska. U.S. Geological Survey, Data Series 56, CD-ROM. [Link]

Wynn, J.C., R.P. Kucks, and D.J. Grybeck, 1999, An interpretation of the aeromagnetic and gravity data and derivative maps of the Craig and Dixon Entrance 1-degree by 3-degree quadrangles and the western edges of the Ketchikan and Prince Rupert quadrangles, southeastern Alaska: US Geological Survey Open-File Report 99-316 (Also, USGS Digital Data Series-56, formal USGS CD-ROM publication), about 250 Mbytes of data, models, maps, and interpretative text.

Wynn, Jeffrey C., and Shoemaker, Eugene M., 1998, The Day the Sands Caught Fire: Scientific American, 279, no. 5, pp. 36-45 (November 1998 issue). 

GERMAN TRANSLATION: Wynn, Jeffrey C; Shoemaker, Eugene M, 1999, Flammendes Inferno in der Wueste: Spektrum der Wissenschaft, vol.1999, no.2, pp.30-37. 

POLISH TRANSLATION: Wynn, J.C., and Shoemaker, E.M., 1999, Kiedy piaski zajaoenia y ogniem (“When sands flash of fire”): Oewiat Nauki, p. 21 - 27. 

FRENCH TRANSLATION: Wynn, J, and Shoemaker, E., 1999, Le jour ou le ciel sénflamma - la recherche des meteorites: Pour la Science, vol. 255, p. 34-41. 

SPANISH TRANSLATION: Wynn, J.C., and Shoemaker, E.M., 1999, Meteoritos en el desierto: Investigacions y Ciencia, 268, p. 14-21 [Download File]

Wynn, J.C., 1999, Tectonics and mineral potential of the Amazonas and southwestern Bolívar States, Venezuela: Tectonics and Metallogeny, 7, no. 2, p. 95-112. [Download File]

Schruben, Paul G.; Wynn, J. C.; Gray, Floyd; Cox, D. P.; Sterwart, J. H.; Brooks, W. E., 1997. Geology and mineral resource assessment of the Venezuelan Guayana Shield at 1:500,000 scale; U.S. Geological Survey Data Series 46, CD-ROM [Link]

Wynn, J. C.; Gettings, M. E., 1997. A preliminary interpretation of the 1997 airborne electromagnetic (EM) survey over Fort Huachuca, Arizona, and the Upper San Pedro River basin. US Geological Survey Open-File Report 97-457, 42 p.

Brooks, W. E.; Sidder, G. B.; Garcia, A. E.; Wynn, J. C.; Schruben, P. G.; Lugo, Elis; Cox, D. P.; Martinez, Felix; Rincon, Haydee; Stewart, J. C.; Estanga, Yasin; Marcano, Iris; Martinez, Miguel; Rendon, Ines; Rivero, Ivan; Rivero, Nelson; Ubencio, Urbano, 1996. Geologic map of the Rio Caura 2 degrees x 3 degrees Quadrangle, Estado Bolivar and Estado Amazonas, Venezuela. IMAP 2537, 1 map; 45 x 67 cm., on sheet 145 x 105 cm., folded in envelope 30 x 24 cm.

Bond, Kevin R.; Wynn, J. C. , 1994. Simple Bouguer gravity anomaly maps of the Venezuelan Guayana Shield, Southeast Venezuela. Open-File Report 94-165, 10 maps:  photocopies ; each 47 x 68 cm., on sheets 61 x 86 cm. + 1 title sheet (61 x 86 cm.)

Wynn, J. C.; Olmore, S. D.; Mendoza, Vicente; Garcia, Andres; Martinez, Miguel; Schruben, P. G., 1994. Geologic map of the Venezuela part of the Rio Mavaca 2 degrees by 3 degrees Quadrangle, Amazonas Federal Territory, Venezuela. Miscellaneous Field Studies Map 2241, 1 map; 33 x 52 cm., on sheet 59 x 102 cm., folded in envelope 30 x 24 cm.

Wynn, J. C.; Olmore, S. D.; Mendoza, Vicente; Garcia, Andres; Martinez, Miguel; Tovar, Frank; Rendon, Ines; Rincon, Haydee; Martinez, Felix; Lugo, Elis; Schruben, P. G., 1994. Geologic map of the Venezuela part of the La Esmeralda 2 degrees by 3 degrees Quadrangle, Amazonas Federal Territory, Venezuela. Miscellaneous Field Studies Map 2244, 1 map; 44 x 67 cm., on sheet 69 x 122 cm., folded in envelope 30 x 24 cm.

Wynn, J. C.; Olmore, S. D.; Mendoza, Vicente; Rincon, Haydee; Garcia, Andres; Rivero, Nelson; Rendon, Ines; Gray, Floyd; Marcano, Iris; Lugo, Elis; Schruben, P. G., 1994. Geologic map of the Venezuela part of the Piedra de Cocuy 2 degrees x 3 degrees Quadrangle, Amazonas Federal Territory, Venezuela. Miscellaneous Field Studies Map 2243, 1 map; 31 x 32 cm., on sheet 61 x 86 cm., folded in envelope 30 x 24 cm.

Wynn, J. C.; Olmore, S. D.; Mendoza, Vicente; Garcia, Andres; Rendon, Ines; Estanga, Yasmin; Rincon, Haydee; Martinez, Felix; Lugo, Elis; Rivero, Nelson; Schruben, P. G., 1994. Geologic map of the Venezuela part of the Puerto Ayacucho 2 degrees x 3 degrees Quadrangle, Amazonas Federal Territory, Venezuela. Miscellaneous Field Studies Map 2245, 1 map; 44 x 45 cm., on sheet 69 x 107 cm., folded in envelope 30 x 24 cm.

Wynn, J. W.; Olmore, S. D.; Mendoza, Vicente; Martinez, Miguel; rincon, Haydee; Garcia, Andres; Rivero, Nelson; Rendon, Ines; Marcano, Iris; Lugo, Elis; Schruben, P. G., 1994. Geologic map of the Venezuela part of the Atabapo 2 degrees x 3 degrees Quadrangle, Amazonas Federal Territory, Venezuela. Miscellaneous Field Studies Map 2240, 1 map; 44 x 45 cm., on sheet 64 x 101 cm., folded in envelope 30 x 24 cm.

Long, Keith R.; Wynn, J. C.; Fritz, F.; Corbett, J., 1992. Lacustrine manganese; a supplement to U.S. Geological Survey Bulletin 1693. U.S. Geological Survey, Open-File Report 92-239, 12 p.

Wynn, Jeffrey C.; Sidder, Gary B., 1991. Mineral resource potential of the NB-20-4 Quadrangle, eastern Guayana Shield, Bolivar State, Venezuela. US Geological Survey Bulletin 1960, 16 p., 2 maps.

Wynn, Jeffrey C., and Cox, Dennis P., 1991, A geologic and tectonic map of the Venezuelan Guayana Shield (1:1,000,000 scale) with a revised stratigraphic column for the Venezuelan Guayana Shield: USGS Administrative Report; compilation with 43 contributors, two plates, and a stratigraphic interpretive description; Interagency report submitted to CVG-Técnica Minera, C.A., [USGS MAP; also: U.S. Geological Survey Bulletin 2062, Plate 2]. 

Wynn, Jeffrey C.; Bond, K. R.; Williams, R. T.; Long, L. T., 1988. Complete Bouguer anomaly map of the Greenville Quadrangle, Georgia and South Carolina. Open-File Report 88-19, 1 map.

Wynn, J. C.; Bond, K. R.; Williams, R. T.; Long, L. T., 1986. Principal facts of gravity data for the Greenville 1 degree by 2 degrees Quadrangle, Georgia, North Carolina, and South Carolina. U.S. Geological Survey, Open-File Report 86-411, 180 p.

Wynn, J. C. , 1986. Gravity base station network and descriptions for the Greenville 1 degree by 2 degrees Quadrangle, Georgia and South Carolina. U.S. Geological Survey, Open-File Report 86-287, ii, 18 p., 1 map.

Wynn, J. C.; Grosz, A. E.; Foscz, V. M., 1985. Induced polarization and magnetic response of titanium-bearing placer deposits in the Southeastern United States. U.S. Geological Survey, Open-File Report 85-756, 41 p., 3 maps.

Evans, James G.; Albers, J. P.; Griscom, Andrew; Wynn, J. C.; Hasbrouck, W. P., 1984. Geological and geophysical studies of chromite deposits in the Josephine Peridotite, northwestern California and southwestern Oregon. US Geological Survey Bulletin 1546-A-D, 86 p.

Klein, D. P.; Wynn, J. C., 1984. Density, porosity, and magnetic susceptibility of rocks from the Silver City 1 degree by 2 degrees Quadrangle, Arizona and New Mexico. U.S. Geological Survey, Open-File Report 84-17, iii, 13 p., 2 maps.

Wynn, Jeffrey C.; Waitzeneger, B.; Watters, T. R.; Mirzai-Pouinak, H.; Gardner, A., 1984. Aeromagnetic map and magentic source analysis map of the San Simon 15-minute Quadrangle, Arizona and New Mexico. Open-File Report 83-631, 2 over-size sheets.

Meyer, R. F., Wynn, J. C., and Olson, J. C., 1984, The Future of Heavy Crude and Tar Sands: McGraw-Hill, New York, 1338 pages (UNITAR BOOK).

Wynn, J. C., and Sherwood, S. I., 1984, The self-potential (SP) method: an inexpensive reconnaissance archaeological mapping tool: Journal of Field Archaeology, 11, no. 2, p. 195-204.

Peterson, D. W.; Jinks, J. E.; Miller, W. A.; Motooka, J. M.; Wynn, J. C., 1983. Mineral resource potential of the Superstition Wilderness and contiguous roadless areas, Maricopa, Pinal, and Gila Counties, Arizona. U.S. Geological Survey, Open-File Report 83-885, v, 34, 81 p.. 4 maps.

Argonaut Enterprises, with an introduction by Wynn, J. C. , 1982. Contract report on a remote-reference magnetotelluric survey in the southern Appalachian overthrust belt, North Carolina. U.S. Geological Survey, Open-File Report 82-312, 165 p., 1 over-size sheet.

Flanigan, V. J.; Wynn, J. C.; Worl, R. G.; Smith, C. W., 1981. Preliminary report on geophysics ground follow-up of the 1977 airborne survey in the Wadi Bidah District, Kingdom of Saudi Arabia. U.S. Geological Survey, Open-File Report 82-202, 58 p., 1 over-size sheet.

Wynn, Jeffrey C., 1981. Chromite geophysics; an example of synergistic geophysical exploration for industrial commodities. U.S. Geological Survey, Open-File Report 81-964, 75 p.

Wynn, Jeffrey C., 1981. Principal facts for gravity stations and base-station net in the Silver City 1 degree x 2 degrees Quadrangle, Arizona and New Mexico. U.S. Geological Survey, Open-File Report 81-40, 118 p., 2 maps.

Wynn, J. C., 1981. Complete Bouguer gravity anomaly map of the Silver City 1 degree x 2 degrees Quadrangle, New Mexico-Arizona. IMAP 1310-A.

Wynn, Jeffrey C.; Hasbrouck, W. P., 1980. Geophysical studies of chromite deposits in the Josephine ultramafic complex of Northwest California and Southwest Oregon. U.S. Geological Survey, Open-File Report 80-936, 47 p.

Hedlund, David Carl; Watts, K. C.; Alminas, Henry V.; Wynn, Jeffrey C. , 1979. Background information to accompany folio of geologic, mineral resource, geochemical, aeromagnetic, and gravity maps of the Hillsboro and San Lorenzo quadrangles, Sierra and Grant Counties, New Mexico; with sections on geochemistry and geophysics. U.S. Geological Survey Circular 808, 26p, 2 maps.

Wynn, Jeffrey C.; Blank, Horace Richard, 1979. A preliminary assessment of the 1977 INPUT survey on the Arabian Shield, Kingdom of Saudi Arabia, with guides for interpretation and ground follow-up. U.S. Geological Survey Open-File Report 79-1508, 35 p., 2 maps.

Wynn, Jeffrey C., 1979. Electromagnetic coupling with a collinear array on a two-layer anisotropic earth. U.S. Geological Survey Professional Paper 1077, 26 p.

Wynn, Jeffrey C.; Dansereau, Danny A., 1979. Preliminary complete Bouguer gravity anomaly map of the Silver City two-degree sheet, New Mexico and Arizona. Open-File Report 79-708, 1 map.

Wynn, Jeffrey C., 1979. An experimental ground-magnetic and VLF-EM traverse over a buried paleo-channel near Salisbury, Maryland. U.S. Geological Survey, Open-File Report 79-1505, 10 p., 1 map.

Wynn, Jeffrey C.; Manydeeds, Stephan A., 1978. Principal facts for gravity stations in and adjacent to the Superstition Mountains, Gila, Pinal, and Maricopa Counties, Arizona. U.S. Geological Survey, Open-File Report 78-566, 9 maps.

Wynn, Jeffrey C.; Otton, James K.; Stawicki, Ronald A., 1978. Principal facts for gravity stations in Maricopa, Mojave, Yavapai, and Yuma Counties, Arizona. U.S. Geological Survey, Open-File Report 78-207, 13 maps.

Wynn, Jeffrey C.; Otton, James K. , 1978. Complete Bouguer gravity maps and gravity models of the Date Creek basin and vicinity, Maricopa, Mojave, Yavapai, and Yuma counties, Arizona. Open-File Report 78-362, 2 maps.

Wynn, Jeffrey C.; Brooks, Robert A., 1978. Petrophysical measurements across a uranium roll feature: Rajah-49 Mines, Gateway, Colorado: U.S. Geological Survey, Open-File Report 78-565, 54 p.

Dansereau, Dan A.; Wynn, Jeffrey C., 1978. Principal facts for gravity stations in the Hillsboro and San Lorenzo Quadrangles, Grant and Sierra Counties, New Mexico. U.S. Geological Survey, Open-File Report 78-541, 10 p., 1 map.

Otton, James K.; Wynn, Jeffrey C., 1978. Geologic interpretation of gravity data from the Date Creek basin and adjacent areas, west-central Arizona. U.S. Geological Survey, Open-File Report 78-845, 18 p. 2 maps.

Wynn, J. C.; Dansereau, D. A., 1978. Complete Bouguer gravity map of the San Lorenzo and Hillsboro quadrangles, Grant and Sierra counties, New Mexico. Miscellaneous Field Studies Map 900-M, 1 map.

Wynn, J. C., 1978. Parallel-surface-continued aeromagnetic map of the San Lorenzo and Hillsboro quadrangles, Grant and Sierra counties, New Mexico: US Geological Survey Miscellaneous Field Studies Map 900-L.

Wynn, Jeffrey C.; Tippens, C. L.; Manydeeds, Stephan A., 1977. Audio-magnetotelluric station location map and data, Belt Basin, Montana. U.S. Geological Survey, Open-File Report 77-673, 9 p., 1 map.                  

Wynn, J. C., 1977, Review of 'Principles of induced polarization for geophysical exploration' by J. S. Sumner:  Geophysics, v. 42, no. 5, p. 1092-1093. 

Wynn, J.C., and Bhattacharyya, B.K., 1977, Reduction of terrain-induced aeromagnetic anomalies by parallel-surface continuation:  A case history from the southern San Juan Mountains of Colorado:  Geophysics 42, no. 7, p. 1431-1449. 

Wynn, J. C., Kleinkopf, M. D., and Harrison, J. E., 1977, Audio-frequency magnetotelluric and gravity traverse across the crest of the Purcell anticlinorium, northwest Montana:  Geology 5, no. 5, p. 309- 312. 

Wynn, J. C., and Zonge, K. L., 1975, Electromagnetic coupling, its intrinsic value, its removal, and the cultural coupling problem:  Geophysics, v. 40, no. 5, p. 831-850. 

Zonge, K. L., and Wynn, J. C., 1975, Recent advances and applications in complex resistivity measurements: Geophysics, v. 40, no. 5, p. 851-864. 

Zonge, K.L., and Wynn, J.C.. 1975, Recent advances and applications in complex resistivity measurements:  in Short course in induced polarization and complex resistivity, January 9-10, 1975 Proceedings and papers: University of Arizona, Laboratory of Geophysics, Department of Geoscience, 46, p. with addendum. 

Zonge, K. L., Wynn, J. C., and Young, G. N., 1975, Application of complex resistivity measurements to geothermal prospecting:  Future energy horizons of the Pacific Coast:  15th annual meeting of the Pacific sections of the A.A.P.G., S.E.P.M., and S.E.G., April 23-26, 1975, Proceedings, p. 613-629.

Wynn, J.C., 1974, Electromagnetic coupling in induced polarization: Tucson, Arizona, University of Arizona, Ph.D. thesis, 99 p. 

Davis, G. R., Eliopolis, G. J., Frost, E. G., Goodmundson, R. C., Knapp, R. B., Liming, R. B., Swan, M. M., and Wynn, J. C., 1974, Recumbent Folds--focus of an investigative workshop in tectonics:  Journal of Geological Education, v. 22, no. 5. p. 204-208.

Sturgul, J.R., and Wynn, J.C., 1973, On-line use of computers in geophysical exploration: Mining Engineering, v. 25, no. 10, p. 40-42.

 

C: Invited Lectures and Extended Abstracts

1. Wynn, J.C., Sturgul, J.R., and Lazear, G.,1973, Some applications of finite elements to model geological structures:  EOS, Transactions American Geophysical Union, v. 54, no. 11, p. 1207.

2. Zonge, K. L., and Wynn, J. C., 1973, Electromagnetic coupling in induced polarization:  Geophysics, v. 38, no. 6, p. 1230.

3. Zonge, K.L., and Wynn, J.C., 1973, Eliminacion de acoplamiento electromagnético en datos de polarización inducida: 43rd Society of Exploration Geophysicists Annual International Meeting, Mexico City, Mexico, Abstracts, p. 54-55 (Engl.), 5th Reunión de la Asociación. Geofisica Mexicana de Exploración, p. 55-56 (Spanish).

4. Wynn,  J. C., Zonge, K. L., Fink, J. B., and Young, G. N., 1975, Electromagnetic coupling, a comparison of removal techniques, and the cultural coupling problem:  Geophysics, v. 40, no. 1, p. 157- 158. Note: This paper won the 1975 Best Paper Award of the Society of Exploration Geophysicists.

5. Zonge, K.L., Wynn, J.C., and Young, G.N., 1975, Complex resistivity case histories: Soc. Explor. Geoph. Annual International Meeting Abstracts, No. 45, p. 41.

6. Zonge, K. L., Fink, J. B., Young, G. N., and Wynn, J. C., 1975, Recent advances and applications in complex resistivity measurements: Geophysics, v. 40, no. 1, p. 158.

7. Bhattacharyya, B. K., and Wynn, J. C., 1976, Continuation of potential fields between arbitrary surfaces and reduction of terrain- induced anomalies on magnetic and gravity maps:  Workshop on Mathematical Treatment of Anomalies and their Geological Interpretation in Geomagnetic Prospecting, Hannover, F. R. Germany, November 1976, Proceedings Volume, 2pp.

8. Wynn, J. C., and Bhattacharyya, B. K., 1977, Application of a new technique for minimizing the effects of topography on aeromagnetic data:  Geophysics, v. 42, no. 1, p. 192.

9. Brooks, R. A., and Wynn, J. C., 1977, Geological, geochemical, and petro-physical features of part of a tabular uranium body, RAJAH-49 Mine, Mesa County, Colorado:  American Association of Petroleum Geologists, 26th Annual Meeting, Denver, Colorado, 3-6 April, Program and Abstracts, in A.A.P.G. Bull. 61, No. 8, p. 1373-1374.

10. Wynn 1978, Chromite geophysics:  Society of Exploration Geophysicists, Annual International Meeting, San Francisco, 1978: Geophysics, v. 43, no. 6, p. 1330.

11. Wynn, J.C., 1981, The U.S. Geological Survey program for exploration research for strategic mineral resources – examples of chromite, gold, and potash: Bulletin, Australian Society of Exploration Geophysicists, 12, no. 3, p. 63.

12. Henry, C. P., and Wynn, J. C., 1981, Serpentine geophysics: the impact of serpentine on exploration: Geophysics, v. 46, no. 4, p. 427.

13. Wynn, J.C., 1982, Grounding measurements and the electromagnetic response of buried man-made conductors: Geophysics, v. 47, no. 4. p. 418.

14. Wynn, J. C., Sherwood, S. I., and Henry, C. P., 1982, Experimental survey techniques in archaeology: Society for Historical Archaeology, Annual Meeting, Philadelphia, PA, January 1982, Program with Abstracts, 1pp.

15. Wynn, J.C., 1986, Invited, Marine induced polarization experiments: 1986 Offshore Technology Conference in Houston.

16. Page, N.J., Sidder, G.B., Herd, D.G., Marsh, S.P., and Wynn, J.C., 1988, Observations and recommendations for the Chiricayen prospect: U.S. Geological Survey Administrative Report, 2 pages. Interagency report submitted to CVG-Técnica Minera, C.A.

17. Sidder, G.B., Acosta, E., Brooks,, W.E., Contreras, G., Day, W.C., Earhart, R.L., Estanga, Y., Franco, L., Garcia, A., Guerra, A., Ludington, S., Marcano, I., Marsh, S.P., Martinez, F., Nuñez, F., Page, N.J., Quintana, E., Rivero, I., Sanchez, H., and Wynn, J.C., 1988, Preliminary mineral resource evaluation of the Guayana Shield, Bolívar State, Venezuela: Abstracts with Programs, 1988 Annual Meeting of the Geological Society of America, p. A277.

18. Wynn, J.C., 1989, Venezuelan/USGS cooperative work in Mining Geophysics and Mining Exploration: The V Simpósio Sudamericano de COGEODATA, Caracas, Venezuela, 20-23 April, 1989.

19. Wynn, J.C., 1990, Snakes, crocodiles, gold, and geophysics in Venezuela: Abstract for a talk given at the USGS auditorium, Reston, VA, 3 October 1990, 1 p.

20. Wynn, J.C., 1991, Invited, Summary of the USGS-TECMIN Cooperative Project in Venezuela: USGS McKelvey Forum in Reno, Nevada, 7-14 February, 1991.

21. Wynn, J.C., 1992, Electrical methods used in the exploration for titanium minerals: King AbdulAziz University, Jeddah, Saudi Arabia, 31 May 1992.

22. Wynn, J.C., 1994, Geophysics at 61o C-- the first summer expedition across the Rub' Al-Khali desert, and the Wabar meteorite impact site: Invited lecture, the Deputy Ministry for Mineral Resources, Jeddah, Saudi Arabia, July 1994, 1 p. (plus Arabic abstract.).

23. Wynn, J.C., Invited, Geophysical Applications to Archaeological Problems: Dhahran Geological Society, 16 Nov 1993 (airfare, hotel costs paid for by DGS).

24. Wynn, J.C., 1994, Invited, Recent expeditions across the Rub' Al-Khali desert and a reexamination of the Wabar meteorite craters - an important key to understanding hypervelocity impacts and their effects upon life on earth: Invited presentation, with 2-page abstract printed for a lecture presented twice: (1)DMMR auditorium, Jeddah, Saudi Arabia, 21 December 1994, and (2) Inaugural Lecture for the opening of the Abdu Ra'uf Khalil Science City, Jeddah, Saudi Arabia, 11 Jan 1995, 2 p. (plus 2-page Arabic version).

25. Wynn, J.C., 1996, Invited, Phosphate Geophysics: Society of Exploration Geophysics Annual International Meeting, 12 November 1996.

26. Grosz, A.E., Wynn, J.C., Grossman, J.N., and Stanaway, K.J., 1997, Defining placer industrial heavy-mineral provinces of the United States and its Exclusive Economic Zone, Programme of the XI International Symposium on Mineral Deposits Associated with Placers and Weathered Rock Deposits, Russian Academy of Sciences, September 15-19, Moscow-Dubna, Russia. p. 69

27. Wynn, J.C., 1997, Terenos permisivos de mineralización en el Escudo de Guayana y su relación con estructuras tectónicas regionales: Extended Abstract of a talk presented at the IGCP Project 354, "Economic Superaccumulations of Metals in the Lithosphere, Large Ore Concentrations in Tectonized Areas" symposium in Puerto Ordaz, Venezuela, 16-20 August 1997, 4 pages.

28. Wynn, J.C., 1997, Invited, The Wabar meteorite impact event: Geological Society of Washington, Washington, DC, 26 February 1997.

29. Karl, S.M., McCafferty, Anne., Smith, S.M., Smith B.D., Wynn, J.C., Sole, T.C., Haeussler, P.J., and Taylor, C.D., 1998, Geophysical, geochemical, and geological investigations of the Wrangell geophysical survey area, southeastern Alaska: Alaska Miners Association, Mining Alaska's state and native lands, Abstracts, p. 3-4 .

30. Wynn, J.C., and Grosz, A.E., 1998, Characterizing shallow sediments in the near-shore continental shelf using induced polarization: Transactions - EOS, American Geophysical Union 79, No. 45, p. 415-416. B.

31. Wynn, J.C., 1999, Invited, Glass in the sand - clues to the physics of a hypervelocity impact:  keynote monthly talk, Potomac Geophysical Society, Arlington, VA, 16 April 1998

32. Wynn, Jeff, and Don Grybeck, 1999, Aeromagnetic and gravity data, and what can be learned from them and derivative maps and models of Prince of Wales and nearby islands, southeastern Alaska: Alaska Miners Association Meeting, Anchorage, November 1999.

33. Wynn, Jeff, 1999, Induced polarization technology for characterization of offshore minerals, unexploded ordnance, and buried wrecks: DOI Technology Update Seminar, USGS National Center, 28 July 1999.

36. Grosz, A.E., and Jeff Wynn, 1999, Quaternary geology, geomorphology, mineral resources, and mineral-resource assessment of the Atlantic Continental Shelf of the United States, Heavy Mineral Placers conference, Samara, Russia.

37. Wynn, J.C., 1999, Invited, Hazards from meteorite impacts: Cascades Volcano Observatory, Summer 1999; travel paid for by CVO.

38. Wynn, Jeff, McGinnis, Tim, and Williamson, Mike, 2000, Induced polarization - a new seafloor mapping tool: Oceanology International-Americas Conference, Miami, FL March 2001.

39. Wynn, J.C., 2000, Invited, A three dimensional aquifer map derived from airborne EM and aeromagnetic data: The Potomac Geophysical Society, Arlington, VA, 19 October 2000.        

40. Wynn, Jeff, 2000, Invited, Glass in the sand - clues to the physics of a hypervelocity impact: University of Arizona Lunar & Planetary Science Laboratory, 25 September 2000.

41. Wynn, Jeff, 2000, Invited, Using airborne EM as a three-dimensional aquifer mapping tool: University of Arizona Dept. of Geoscience, 26 September 2000.

42. Karl, Sue; Doucette, Jon; McCafferty, Anne, Wynn, Jeff; and Smith, Bruce, 2000, Status of geological and geophysical mapping in Prince of Wales Island, southeastern Alaska: Alaska Miners Association Annual Meeting, Anchorage, AK, November 4-7, 2000, 1 page.

43. Doucette, Jon; Wynn, Jeffrey; Karl, Susan; McCafferty, Anne; Smith, Bruce; and Bittenbender, Peter, 2000, Geophysical character of VMS deposits on Prince of Wales Island, Alaska - a work in progress: Alaska Miners Association Annual Meeting Abstracts, Anchorage, AK, November 4-7, 2000, p. 41-42.

44. Wynn, J.C., 2000, Invited, Three dimensional aquifer map derived from airborne EM and aeromagnetic data: The Potomac Geophysical Society, Arlington, VA, 19 October 2000.

45. Wynn, J.C., 2001, Geophysical research in the U.S. Geological Survey: FastTimes (Newsletter of the Environmental & Engineering Geophysical Society), August 2001 issue, p. 18-19.

46. Wynn, J.C., 2001, Imaging hidden water in three dimensions using an active airborne electromagnetic system: American Geophysical Union spring meeting abstracts, Boston, June 2001, 1 page.

47.  Wynn, Jeff; McGinnis, Tim, 2001, Mapping Certain Polarizeable Minerals in the Sub-Seafloor with a Towed-Streamer Electrical Geophysical System: Underwater Mining Institute Conference, 31 October – 3 November 2001, Hilo, Hawaii, 1 page.

48. Mars, J.L. and Wynn, J.C., 2002, Geologic mapping of the Sierra San José mountain range, Mexico, using advanced spaceborne thermal emission and reflection radiometer (ASTER) data - a  remote sensing tool to assist geologic mapping in the field: Geological Society of America 34, no. 6, pp. 551.

49.  Gray, Floyd; Page, William R.; Wynn, Jeffrey C.; Callegary, James; Maldonado, Florian; Miller, Robert J.; Pool, Don; Villaseñor, Felix; and Norman, Laura, 2004, Integration of multispectral imagery with aeromagnetic and geologic map data to understand the tectonic framework of the San Pedro River headwaters, Sonora, Mexico: Libro de Resúmenes, p. 20-21.

50.  Gray, Floyd; Page, William R.; Kleinkopf, Merlin D.; Pool, Donald R.; Callegary, James; Wynn, Jeffrey C.; Maldonado, Florian; and Miller, Robert J., 2005, Geological and geophysical studies of the headwaters of the San Pedro River in northern Sonora, Mexico: Geological Society of America 37, no. 7, pp. 450.

51. Wynn, J.C., 2007, Invited, Marine induced polarization: University of Texas-Dallas, 9 November 2007.

52. Wynn, J.C., 2007, Invited, Asteroid impact physics: University of Texas-Dallas, 9 November 2007.

53. Wynn, J.C., 2007, Invited, Groundwater mapping using an airborne EM system: University of Texas-Dallas, 10 November 2007.

54. Wynn, J.C., 2007, Invited, Mapping a previously unmapped mountain range in Mexico with  ASTER image processing and Euler Deconvolution: University of Texas-Dallas, 10 November, 2007.

55. Wynn, J.C., 2009, Invited, Geologic clues to the physics of a hypervelocity impact: Geological Society of Oregon Country Annual Meeting Keynote Address, Portland, OR, 8 March 2009.

56. Wynn, Jeff; Williamson, Mike; Urquhart, Scott; and Fleming, John, 2011, An open-water electrical geophysical tool for mapping heavy placer minerals in 3D, and migrating hydrocarbon plumes in 4D: IEE-Marine Technology Society Meeting, Waikaloa, HI, September 19-22, 2011.

57.  Williamson, Mike, and Wynn, Jeff, 2013, Marine induced polarization technology – An exciting new tool for offshore mineral and hydrocarbon exploration: Oceanology International 2013, Shanghai, China, 3-5 September 2013.

58. M. Battaglia, M. Lisowski, D. Dzurisin, M. Poland, S. Schilling, A. Diefenbach, and J. Wynn, 2016, Magma Intrusion at Mount St. Helens, Washington, from Temporal Gravity Variations: presentation at Cities On Volcanoes - 9, Chile.

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