OBJECTIVE

Work as an independent contractor applying geophysical methods in the field and in the office to enhance chances of success delineating subsurface structures and anomalies.

EXPERIENCE

Independent Contractor with self established company Big Sky Geophysics, Bozeman, MT, 1998-present.
Collect, oversee, process, and interpret potential field (gravity and magnetic), EM, and electrical/IP survey data. Clients include Stillwater Mining, Parsons Engineering, Kennecott Exploration, S. Cohen and Associates, Gold Fields Exploration, BHP-Billiton, as well as numerous smaller companies and individuals.

Project Geophysicist for the Eastern U.S. and Mexico. Kennecott Exploration, Salt Lake City, UT and Charlotte, NC, 1995-1998.
Oversaw, conducted, and interpreted EM, potential field, and electrical/IP surveys in search of VMS, porphyry, sedimentary hosted base metal, diamond, and gold deposits. Worked extensively in the field with Zonge Engineering, Crone Geophysics, NAEVA, numerous airborne survey contractors, as well as in house field crews.

Numerous career related jobs and summer internships while attending college. Highlights include Geophysics Internship at Oak Ridge National Laboratory, Teaching Assistant for the Geophysics Department at Montana Tech, Geophysicist for Shell Offshore Inc. in New Orleans, Physics internship at Fermi National Accelerator Laboratory, and Lab Assistant for the Physics Department at Montana State.

EDUCATION

Montana College of Mineral Science and Technology, Butte, Montana.
M.Sc. in Geophysical Engineering (May, 1994)
GPA: 3.79/4.00; Thesis project: 3-D Diffraction Tomography using GPR. Wrote a three-dimensional processing algorithm for GPR data and applied it to a test field data set. Course work includes many classes in geology and hydrogeology as well as geophysics.

Montana State University, Bozeman, Montana.
B.Sc. in Physics-Professional Option with a minor in Mathematics (April, 1991)
GPA: 3.71/4.00; Graduated with Highest Honors.

Technische Universität München, Munich, Germany, 1989-1990

Current OSHA 40 hour HAZWOPER training certification
Engineer in Training certified

Good German - two years study at university and one year studying physics at a university in Munich
Intermediate Russian - six months of individual intensive study (719 academic hours) in St. Petersburg, Nizhniy Novgorod and Volgograd, Russia, Kiev and Odessa, Ukraine
Beginner/Intermediate Spanish - one week of individual intensive study (40 academic hours) in Guadalajara, Mexico and extensive work experience in Mexico and Central America

EQUIPMENT

Possess fully networked office including Pentium III desktop computer, Pentium IV laptop, Pentium laptop for field acquisition, laser printer, office inkjet printer, portable inkjet printer, HP DesignJet 755CM plotter, digitizing board, scanner, and archive backup system.

Software includes Geosoft Oasis Montaj potential field mapping and processing software, NGA GM-SYS potential field modeling software, Maxwell EM display/processing/interpretation software, Geotomo Software RES2DINV and RES3DINV two and three dimensional IP/resistivity inversion software (based on Loke's source code), SU seismic/ground penetrating radar reflection processing software, WinSism seismic refraction processing software, gravity terrain correction software, ArcView GIS software, Golden Software digitizing software, Golden Software Grapher, and numerous public domain, commercial, and personal programs written in FORTRAN, C, and BASIC for formatting and processing various geophysical data types.
Other office equipment includes drafting table, light table, and layout table.

Field equipment includes four wheel drive pickup, four wheel drive ATV, GEM GSM-19W Overhauser Walking Magnetometer/Gradiometer (0.5 second sampling rate), GEM GSM-19TG Proton Precession Walking Magnetometer/Gradiometer (3.0 second sampling rate), LaCoste and Romberg Model G gravimeter with electrostatic readout, survey grade Trimble 5700 GPS Total Station base/rover receiver pair with both eRTK and post processing options, fully digital modern Geophyzika gamma ray spectrometer with large (3") crystal sensor, two Apex Parametrics Max-Min II EM induction systems (one digital and one analogue), Iris Instruments time domain resistivity/induced polarization system (VIP3000 3 kW transmitter and IP-2 two channel receiver), Exploranium GR110 analog scintillometer, Geonics VLF receiver with resistivity option and miscellaneous positioning and surveying devices. The magnetometers have been integrated with a 12 parallel channel GPS receiver system for positioning.

PUBLICATIONS

Jorgensen, C., 2000, Gravity surveying and processing in difficult terrain: Greens Creek Mine, Alaska, Expanded Abstracts of Society of Exploration Geophysicists Annual Conference, Calgary.

Jorgensen, C., Speece, M., and Witten, A., 2000, Three-dimensional diffraction tomography using GPR, Expanded Abstracts of Society of Exploration Geophysicists Annual Conference, Calgary.

Jorgensen, C., 2004, Tectonic interpretation using potential field data for the Sweetgrass Arch area, Montana-Alberta-Saskatchewan, Expanded Abstracts of Rocky Mountain Section of the American Association of Exploration Geologists Annual Conference, Denver.

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