Earth Explorer Stories
To verify the potential for Magnetization Vector Inversion (MVI) to identify deep intrusives related to copper porphyry systems, veteran copper explorer Carl Windels has compiled several North American examples where the technique works. Among the known deposits the geophysicist tested using the MVI method are the continent’s most famous, including Bingham Canyon in Utah and Morenci in Arizona.
As Vancouver-based Mawson Resources digests the results of a 16,000-metre, 75-hole winter drill program on its gold project in northern Finland, the company’s geologists are finding the voluminous amounts of data easier to manage using MX Deposit.
A research project has made progress in advancing the ability to identify potential locations and intensities of earthquakes in a rift zone. Temporal aeromagnetic data and recent earthquake data was integrated, within Geosoft Oasis montaj, to address the longstanding question of the role preexisting Precambrian structures play in modulating strain accommodation and subsequent ruptures leading to seismic events within an active rift system.
The guide to the Carlin Trend field trip organized by Newmont Mining following the Society for Exploration Geophysicists conference in 1996 is now available online. The guide is a comprehensive package of materials that would be impossible to replicate but remains relevant to exploration for Carlin-type deposits.
Taking a new approach to regional integrated seismic exploration, Russia-based Geology Without Limits combined old and new data - reflective and refractive seismic, and potential field - to create a more accurate model of the deep structure of the eastern Black Sea basin. The team applied cutting-edge geophysical technologies, including Geosoft’s GM-SYS 3D and VOXI Earth Modelling software, to form the new model.
When a 50 kilogram German bomb was found in the River Thames during civil engineering work earlier this year, bridges were closed, roads cordoned off, and the Royal Navy and police called in to remove and safely detonate the device. As a further precaution, SAND Geophysics was hired to work alongside the Port of London Authority Hydrographic Service to resurvey the area. Key to SAND’s approach was the integration of all of its datasets in Geosoft Oasis montaj to provide a higher level of confidence in the results.
Red Pine Exploration and Nighthawk Gold are among the exploration companies that have recently selected MX Deposit for managing their drill logs and results. A new Earth Explorer article looks at some of the challenges they face in managing their drilling data, and key factors in choosing their solution.
Geoscience data is to exploration what road systems are to transport: a precompetitive asset that jurisdictions must provide if they hope to foster a viable and sustainable mining industry. This article, which includes an interview with Jon Hronsky of Western Mining Services, looks at the new era of prospectivity and why pre-competitive geoscience data will be essential to mineral exploration as we move into the 21st century.
VOXI Magnetization Vector Inversion helped identify structures in the Pontes e Lacerda area of southwestern Brazil, a gold district at -12° latitude where magnetic anomalies with inverted polarity are poorly understood, in a study presented by Geosoft at SIMEXMIN 2016.
Keeping up with growing demand for seabed surveys has led service providers to improve workflows and innovate to deliver time and cost savings for clients. Bibby HydroMap uses Geosoft’s Oasis montaj and UXO software to effectively process and analyze the massive volume of project data, and generate fast results to assist in on-site planning.
Golden West Humanitarian Foundation will be using Geosoft’s Oasis montaj and UXO Marine software when surveying the coastal waters of the Solomon Islands, where villagers have been living under UXO threat since the end of World War II.
A filtering process refined by inversion modelling in Geosoft VOXI has given Margaret Lake Diamonds the confidence to select 12 drill targets from more than 60 geophysical anomalies on its 50,000 acre diamond property in the Northwest Territories.
By combining 3D geological insight, integrated exploration techniques and comprehensive data compilation in Geosoft Target, NexGen Energy has hit the buried Arrow zone on the Rook I property that straddles the southwest margin of Saskatchewan’s Athabasca basin in almost every hole.
The discovery of oceanic gateways could explain rapid glacier thinning in East Antarctica, according to research published by members of the University of Texas Institute for Geophysics, and an international team of collaborators. Inversion of airborne gravity data in Geosoft's GM-SYS Profile and GM-SYS 3D modelling applications, reveals two deep seafloor valleys.
Medgold Resources, a Mediterranean-focused gold exploration company exploring the orogenic gold provinces of northwest Iberia, selected Geosoft Target as its software for exploration mapping and 3D geology.
Magnetization Vector Inversion (MVI) is gaining acceptance as an effective tool for subsurface exploration in areas where magnetization does not necessarily run parallel to the Earth’s magnetic field, a more common scenario than geoscientists have traditionally appreciated.
Stories of data and discovery were shared at Geosoft’s Vancouver User Group Meeting. Project examples range from visualizing diamond pipes in northern Canada to resource modelling in the Golden Triangle of British Columbia and breathing new life into historic data for a project in Cuba.
Coastal Gold has defined a high grade resource at its 100%-owned Hope Brook gold deposit in Newfoundland by developing a 3D model that has tighter constraints and focuses on higher grade drill results. The company was able to pinpoint the high grade zones by analyzing the alteration characteristics of drill core and combining those results with geology in Geosoft Target for ArcGIS.
A 3D model of Promesa’s Alumbre project area, using the MVI process exclusive to Geosoft VOXI Earth Modelling, has increased confidence in the exploration model. Further drilling will utilise the new information that MVI brought to the porphyry model.
Earth Explorer interview: Discovery success linked to big data and the cloud, according to Rio Tinto
Despite a steep appreciation in exploration spending over the past decade, the number of greenfield discoveries is falling every year. Narrowing this gap will require harnessing the power of big data and cloud computing, according to a presentation by Rio Tinto’s exploration chief Stephen McIntosh at this year’s International Geophysical Conference in Melbourne.
Using 3D models of the subsurface derived from geophysical data is standard practise for guiding exploration in the petroleum industry and has the potential to improve success rates for mineral explorers.
Recent editorial changes to EarthExplorer.com, sponsored by Geosoft, have expanded community news coverage and added market and discovery intelligence in partnership with global market and applied research leaders: the Metals Economics Groups (MEG) and the Centre for Exploration Targeting (CET). An Earth Explorer networking group was launched on LinkedIn.
Geosoft demonstrated VOXI Earth Modelling at the PDAC 2012. Accessible 3D modelling technology advances exploration geophysics for improved drill targeting.
Geosoft CET Grid Analysis was among the tools used by Intrepid Geophysics to help target prospective areas on Greencastle’s Nechako Property in central British Columbia.
Deep earth imaging is helping to reveal previously overlooked and undiscovered mineral bodies. Romios Gold is among exploration companies reporting positive results from deep imaging.
Brian Cellura, generative manager for B.C. - based Miranda Gold Corp, describes their use of GIS and 3D technologies to generate quality prospects and attract joint venture partners. Their story appears in Earth Explorer Magazine.