Download or read book The Application of Seismic and Audiomagnetotelluric Methods to Uranium Exploration in the Athabasca Basin written by Saskatchewan. Saskatchewan Industry and Resources and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigating Modelling and Inversion Techniques for Overburden Stripping for Uranium Exploration in the Athabasca Basin Canada written by Mahrdad Darijani and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The major investment in exploration for uranium in Canada is in one of the most important structural corridors of the eastern Athabasca Basin, extending from the Millennium deposit to the McArthur River deposit (called the McArthur-Millennium corridor). This corridor hosts the largest and highest-grade uranium deposits in the world (at a depth of more than 500 m), and it will be the focus of exploration activity by companies (e.g., Cameco) in the Athabasca Basin for many years. In the McArthur-Millennium corridor, people have wondered about how to better detect structures (e.g., alteration zones) associated with the (volumetrically) small uranium mineralization at depth using geophysical methods. But the geophysical responses (e.g., the gravity response) of these structures can be masked by the variation of the overburden thicknesses. Some geophysical attempts have been made to remove the overburden signature and to find the alteration zones, but none of them have got very far. To solve this problem, I investigate developing new methodology as well as new exploration methods in the region to find and remove the overburden signature to explore for new deposits. In this dissertation, I investigate new ways to separate the overburden contribution from geophysical data (via modelling and inversion) so that deeper targets (e.g. an alteration zone) can be detected and delineated by means of an innovative application of new, modern, state-of-the-art modelling and (constrained and joint) inversion of geophysical methods such as seismic refraction, gravity, magnetic and electromagnetic methods. These new methods and investigations (e.g., modelling and constrained joint inversions using the fuzzy c-mean method on tetrahedral meshes) bring us much closer to solving the problem in this corridor. This research project is a part of the CMIC Footprints project, and is a very challenging exploration problem and very useful if successful for many places in Canada, not just the Athabasca Basin and uranium exploration. The Athabasca Basin is a Proterozoic sedimentary basin which supplies around 20% of the world's uranium. The uranium deposits are surrounded by alteration zones near the unconformity between Proterozoic sedimentary rocks and the Archean and Aphebian metamorphic basement. The sedimentary rocks are covered by Quaternary glacial deposits. Because of the small size of uranium deposits and their location at depth, geophysical methods look for structures which host the uranium deposits, for example, electromagnetic (EM) methods can locate graphitic faults. The gravity method can potentially detect the alteration zones. The seismic method can image the unconformity and basement faults. And, magnetic data can delineate basement structures. The benefit of using multiple datatypes can provide complementary information (e.g. the seismic and gravity). These methods can be used for the overburden stripping as well. In the Athabasca Basin, overburden can be conductive while density and seismic velocity of the overburden is less than the sandstone. Some rocks in unconsolidated glacial deposits have magnetic susceptibilities (e.g. granite), whereas sandstone is non-magnetic. Based on these features, the synthetic modelling and inversion of the geophysical data are performed for (mainly) the overburden characterization as well as reconstructing the geological structure in depth. Magnetic, gravity, first-arrival seismic traveltimes and time- and frequency-domain electromagnetic data are synthetized using forward modelling of 2D and 3D models. For inversion methods, independent, joint and constrained methods are applied for 1D, 2D and 3D cases. Independent inversions of the seismic refraction data as well as the electromagnetic data are useful methods for reconstructing the base of the overburden, unlike the independent inversions of gravity and magnetic data. The joint inversion of gravity and seismic refraction data is able well to reconstruct the variable thickness of the overburden better and sharper than the independent inversions. After applying the thickness of the overburden (obtained from the joint inversion) in the constrained independent inversion of gravity data, the location of alteration zone is apparent at depths. The joint inversion of magnetic and gravity data was able to reconstruct the basement blocks, the sandstone and the unconformity; furthermore the base of overburden can be detected after using the constrained joint inversion of magnetic and gravity methods. This method cannot show the alteration zone, but it can show the intersection of the fault with the unconformity where the mineralization can occur. For the electromagnetic method, results show that frequency and time-domain methods can be used for determining the location of the interface between overburden and sandstone and the location of the graphitic faults, respectively.
Download or read book Bulletin written by Geological Survey of Canada and published by . This book was released on 1950 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Progress Report of EXTECH IV Seismic Investigations in the Athabasca Basin Saskatchewan Alberta written by Don J. White and published by Natural Resources Canada. This book was released on 2002 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: EXTECH-IV is a multidisciplinary study designed to improve the geoscience framework and develop exploration technology for unconformity-type uranium deposits of the Athabasca Basin. This paper reports on the seismic reflection & auxiliary downhole seismic surveys conducted within the McArthur River mining camp, Saskatchewan, as part of the study. It describes the acquisition of the seismic data sets, the objectives of each of the surveys, and some preliminary results for the two-dimensional high-resolution survey and the high-frequency vertical seismic profile.
Download or read book EXTECH IV written by Charlie W. Jefferson and published by . This book was released on 2007-01-01 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Uranium Exploration in Athabasca Basin Saskatchewan Canada written by Geological Survey of Canada and published by Geological Survey of Canada. This book was released on 1983 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Overview of Uranium Exploration Work Along the Northern Rim of the Athabasca Basin Northeastern Alberta written by D. I. Panǎ and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Uranium Exploration in Athabasca Basin written by Geological Survey of Canada and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Interim Results of the EXTECH IV Seismic reflection Program in the Athabasca Basin Northern Saskatchewan written by and published by . This book was released on 2003 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-resolution & regional multi-channel seismic reflection profiling were conducted in 2000 under the auspices of the EXTECH-IV Athabasca Multidisciplinary Uranium Studies Project. Overall goals of the Project were to test the effectiveness of this technique as an exploration tool and contribute to the geoscience framework for uranium exploration within the deeper recesses of the Athabasca Basin. This paper provides some interim results from seismic profiling carried out at the McArthur River mine site, northern Saskatchewan, where very high-grade uraninite pods are located at a depth of about 550 metres. It includes results from the regional seismic profiles, high-resolution seismic profiles, high-resolution pseudo-three-dimensional survey, and seismic simulation results for a model of the ore body.
Download or read book An Evaluation of Seismic Reflection Methods as Applied to Uranium Exploration written by David R. Northrup and published by . This book was released on 1984 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EXTECH IV Athabasca Uranium Multidisciplinary Study of Northern Saskatchewan and Alberta Part 2 written by and published by . This book was released on 2003 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The EXTECH IV study aims to enhance the four-dimensional geoscience knowledge base of the Athabasca Basin of northern Saskatchewan & Alberta and to develop new exploration methods for deep uranium deposits. The study comprises 15 sub-projects. This paper summarizes goals, strategies, and results for 2002-03 for sub-projects 1 to 5. Topics covered in these sub-projects are: regional & high-resolution seismic reflection surveys; multi-parameter borehole geophysical measurements; origin of bitumens, hydrocarbons, fluids, & diagenesis associated with uranium ore & mineralization; Athabasca stratigraphy & sedimentology; and the basement geology of the western Basin & its influence on the location of uranium ore.
Download or read book Applied Mineral Exploration with Special Reference to Uranium written by Robert V. Bailey and published by . This book was released on 1977 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Uranium Exploration Case Histories written by International Atomic Energy Agency and published by . This book was released on 1981 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EXTECH IV Athabasca Uranium Multidisciplinary Study of Northern Saskatchewan and Alberta Part 3 written by and published by . This book was released on 2003 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The EXTECH IV study aims to enhance the four-dimensional geoscience knowledge base of the Athabasca Basin of northern Saskatchewan & Alberta and to develop new exploration methods for deep uranium deposits. The study comprises 15 sub-projects. This paper summarizes goals, strategies, and results for 2002-03 for sub-projects 6, 6a, 7, 9, 10, & 11. Topics covered in these sub-projects are: gamma ray geophysical surveys; surficial geology of the Basin; clay mineral studies; magnetotellurics as an exploration tool for detecting graphitic material associated with deep uranium ore; high-resolution gravity surveys; and geochronology of Athabasca uranium.
Download or read book Uranium Exploration Methods written by and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exploration for Unconformity Type Uranium Deposits with Audio magnetotelluric Data written by Volkan Tuncer and published by . This book was released on 2007 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exxon uranium exploration written by Exxon Uranium Exploration And Navajo Nation and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
