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North Bullion; latest gold discovery on the Carlin Trend, Nevada

James L. Wright and Steven R. Koehler
North Bullion; latest gold discovery on the Carlin Trend, Nevada (in Mining and minerals exploration interpretation, Bob Lo (prefacer), Yaoguo Li (prefacer), Richard S. Smith (prefacer), Jose Arce (prefacer), Mark Shore (prefacer) and Tom Lane (prefacer))
Interpretation (Tulsa) (May 2015) 3 (2): SL27-SL38


Gold Standard Ventures Corp. highlighted in their 2014 corporate presentation that "North Bullion and Central Bullion were both gravity- and CSAMT-led discoveries." The North Bullion gold discovery demonstrates the continued effectiveness of geophysics as applied to gold exploration on the Carlin Trend of northeast Nevada. In combination with geologic understanding and target model development, geophysics provides a cost-effective exploration tool to guide exploration drilling. A sustained, incremental program is critical to realizing the full benefit geophysics brings to the exploration effort. In a program spanning five years, 3587 gravity stations and 51.7 line-km of controlled-source audio magnetotelluric (CSAMT) data have been acquired in a multistage approach. A major structure, called the Bullion Fault Corridor (BFC), hosts two known gold deposits over an 18-km strike length. Gravity, followed up with CSAMT, defines the BFC in detail, as well as hydrothermal alteration products related to the mineralization process. Drill and geologic confirmation is integrated with the geophysics to refine interpretations and adjust ongoing survey design. Application of gravity along the Carlin Trend has been actively used as a structural mapping tool for many years. However, combining the results with CSAMT is a more recent development, particularly along the Carlin Trend.

ISSN: 2324-8858
EISSN: 2324-8866
Serial Title: Interpretation (Tulsa)
Serial Volume: 3
Serial Issue: 2
Title: North Bullion; latest gold discovery on the Carlin Trend, Nevada
Title: Mining and minerals exploration interpretation
Author(s): Wright, James L.Koehler, Steven R.
Author(s): Lo, Bobprefacer
Author(s): Li, Yaoguoprefacer
Author(s): Smith, Richard S.prefacer
Author(s): Arce, Joseprefacer
Author(s): Shore, Markprefacer
Author(s): Lane, Tomprefacer
Affiliation: J. L. Wright Geophysics, Spring Creek, NV, United States
Affiliation: Colorado School of Mines, Golden, CO, United States
Pages: SL27-SL38
Published: 201505
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 28
Accession Number: 2015-073918
Categories: Economic geology, geology of ore deposits
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects., sketch maps
N40°07'00" - N42°00'00", W117°00'00" - W114°04'60"
Secondary Affiliation: Laurentian University, CAN, CanadaArce Geofisicos, PER, PeruMagma Geosciences, CAN, CanadaCAMIRO, CAN, CanadaGold Standard Ventures Corporation, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 201532
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