Authors may use MDPI's The seismic reflection method has been used extensively in mineral exploration and for imaging crustal structures within hardrock environments. Our dedicated information section provides allows you to learn more about MDPI. Joint analysis of these images and cross-validation with lithological logging data from 135 nearby boreholes led to successful interpretation of key geological contacts including the target sulfide mineralization. Its founders are recognised leading academics in this new field. The seismic reflection method … We show that by using an advanced pre-stack depth imaging algorithm it is possible to retrieve meaningful and robust seismic images with sparse shot points, using only 3–4 source points per kilometer along a seismic profile. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Natural Resources Canada, K1A 0E8 Ottawa, Canada, Institute of Geophysics, Polish Academy of Sciences, 01-452, Warszawa, Poland, Faculty of Science and Engineering, Curtin University, Bentley WA 6102, Australia, In many parts of the world, exploration for mineral deposits is moving progressively but persistently to greater depths, relying on knowledge gained from previous exploration campaigns and on new exploration tools and techniques used to guide deep and costly boreholes to most suitable, In many parts of the world, exploration for mineral deposits is moving progressively but persistently to greater depths, relying on knowledge gained from previous exploration campaigns and on new exploration tools and techniques used to guide deep and costly boreholes to most suitable targets [...], (This article belongs to the Special Issue, We use self-organizing map (SOM) analysis to predict missing seismic velocity values from other available borehole data. All papers will be peer-reviewed. Predicted reflectivity logs, based on measured densities and predicted velocities, show that some contacts between olivine pyroxenite/olivine websterite-dominant host rocks of the Kevitsa disseminated sulfide mineralization—and metaperidotite—earlier extensively used “lithology” label that essentially describes various degrees of alteration of different olivine pyroxenite variants—are reflective, and thus, alteration can potentially cause reflectivity within the Kevitsa intrusion. Reflection and transmission at normal incidence. doi: https://doi.org/10.1190/geo2012-0028.1. The survey was completed in the northern part of the Carpathian Foredeep (SE Poland) where sulfur deposits occur up to a depth of ca. This amounts to a lower total acquisition cost, which makes DAS a valuable tool for future mineral exploration activities. SEISMIC METHODS Seismic techniques have had relatively limited utilization, due to their relatively high cost and the difficulty of acquiring and interpreting seismic data in strongly faulted and altered igneous terranes, in mineral assessments and exploration at the deposit scale. In addition to the measurements, we generated a realistic synthetic dataset based on a detailed geological model derived from extensive drilling data and petrophysical laboratory analysis. Research articles, review articles as well as short communications are invited. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). At present, high-resolution 2D surveys mostly are performed in mining areas, but there is a general increasing trend in the use of 3D seismic methods, especially in mature mining camps. The method involves the propagation and measure of artificial acoustic waves into the earth. With the utilization of well log data and results of simultaneous inversion, we were able to calculate the elastic properties of the deposit to evaluate sulfur ore content and changes in lithology. Sisprobe, a French company, is the world leader in passive seismic ambient noise methods. Seismic data acquired in this early stage of the Metal Earth project benefited greatly from recent advances in the petroleum sector as well as those. When a … The emergence of the concept of a “mineral system” has changed the way regional-scale mineral prospectivity is assessed. Seismic methods for hard rock mineral exploration; 34th IGC Brisbane 19. Metamorphosed, igneous and polydeformed rocks, which are common subjects of mineral exploration, can be far more complicated than the stratified rocks examined in the search for oil and ga… The interpretation of these reflections has been complicated by disparate borehole data, particularly because of the scarce amount of available sonic borehole logs and the varying practices in logging of borehole lithologies. 1.1 Application of methods Example applications of geophysical techniques to mineral-environmental problems are summarized in Table 1 (Section 3), which lists application, problems, processes, and The petrophysi… Gravity and magnetic methods, which are The course will provide the participants with a profound understanding of seismic methods for deep mineral exploration and consists of two parts/modules: The classroom part/module comprises the theoretical concepts, practical implementations and case studies, including basic, as well as state-of-the art approaches in seismic data processing and imaging for surface and borehole based seismic methods… Find support for a specific problem on the support section of our website. You seem to have javascript disabled. Not only does this broadband signal enhance reflections from the deepest to the shallowest crust, but it also helps the use of full waveform inversion (e.g., to mitigate cycle-skipping) and related techniques. The site has been the target of extensive. This special issue belongs to the section "Mineral Deposits". With this setup, we successfully recorded seismic reflections from the deposit and its nearby geological contrasts. The sulfur content is strongly dependent on the carbonate reservoir’s porosity. Seismic methods were not used for hard-rock mineral exploration until relatively recently. With encouraging results recently obtained in various mining camps, seismic methods continue to make valuable contributions to deep mineral exploration worldwide. Copyright © 2021 Society of Exploration Geophysicists. Vibroseis acquisition with receivers having a 5 Hz response (10 dB down) generated records from a sweep signal starting at 2 Hz, sweeping up to 150 Hz or 200 Hz. Seismic Methods Seismic methods can provide valuable information of the subsurface, such as the seismic velocity structure of the geology (e.g. The integrated analysis of seismic rock properties, lithogeochemical data, and mineral compositional data, estimated via scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), provides insight into the effects of hydrothermal alteration on seismic reflectivity in the footwall of the Lalor volcanogenic massive sulfide (VMS). Exploration geophysics is the practical application of physical methods (such as seismic, gravitational, magnetic, electrical and electromagnetic) to measure the physical properties of rocks, … However, depth imaging methods were used only recently for mineral exploration because they require accurate velocity models that are particularly difficult to obtain with the low signal-to-noise ratio seismic … Seismic reflection methods have been used for the exploration of mineral resources for several decades. Seismic reflection is the most effective exploration tool available to the oil and gas industry, using the transmission of sound waves through the earth and their reflections off different … With encouraging results recently obtained in various mining camps, seismic methods continue to make valuable contributions to deep mineral exploration worldwide. Specific processing and imaging of the acquired and synthetic datasets yielded high-resolution reflectivity images. The survey was completed in the northern part of the Carpathian Foredeep (SE Poland) where sulfur deposits occur. Please note that many of the page functionalities won't work as expected without javascript enabled. A wide range of case studies are covered, including some that are published in the special issue accompanying this article, from surface to borehole seismic methods, as well as petrophysical data and seismic modeling of mineral deposits. Our results encourage the use of 2D seismic reflection profiling as a reconnaissance tool for mineral exploration in areas with limited access for active seismic surveys. In this article, we present a high-resolution shallow seismic surveying method for imaging the inner structure of the Miocene evaporitic formation, where sulfur ore occurs. The site has been the target of extensive seismic reflection surveys, which have revealed a series of reflections beneath the Kevitsa resource area. We discuss post-stack and pre-stack data processing and compare time and depth imaging techniques in this geologically complex Precambrian hardrock area. Due to high metal prices and increased difficulties in finding shallower deposits, the exploration for and exploitation of mineral resources is expected to move to greater depths. This includes topics such as regional reconnaissance of ore system elements; rock physics and quantitative analysis for improved characterization of mineral deposits; modelling, inversion, and integration of seismic data with ore deposit geology. In Canada, 3D seismic investigations focus on massive sulfide deposits, rich in copper, nickel and zinc. Please visit the Instructions for Authors page before submitting a manuscript. The statements, opinions and data contained in the journal, © 1996-2021 MDPI (Basel, Switzerland) unless otherwise stated. Because Metal Earth was proposed to map and compare entire Archean ore and geologically similar non-ore systems, regional sections cover the entire crust to the Moho in the Abitibi and Wabigoon greenstone belts of the Superior craton in central Canada. However, despite their unmatched spatial resolution and depth penetration, they only have played a minor role in mineral discoveries so far. Geodesy and … As wav… Manuscripts can be submitted until the deadline. The site of this study is the Kevitsa Ni-Cu-PGE deposit within the mafic-ultramafic Kevitsa intrusion in northern Finland. Papers addressing technical aspects of the seismic workflow with a particular focus on state-of-the-art methods opening new frontiers in mineral exploration are especially welcome. SOM is an unsupervised data mining method based on vector quantization. Gravity and magnetic geophysical methods are passive. In this research the seismic reflection method has been … Page 3 Saskatchewan Mining Association www.saskmininged.com are in mapping folds, ore deposits, groundwater, underground contamination, and site investigation for construction. The statements, opinions and data contained in the journals are solely During the month, the seismic stations recorded thousands of mining induced earthquakes and strong ambient seismic … The Metal Earth project acquired 927 km of deep seismic reflection profiles from August to November of 2017. However, they were applied to mineral exploration in sedimentary environments because of the similarities to … The book is 438 pages, hardcover and 225 × 280 mm in size. We use cookies on our website to ensure you get the best experience. The method operates by emitting a percussive force to the ground, producing seismic waves … East European Craton: Early Precambrian History and 3D Models of Deep Crustal Structure, Evolution of Early Earth's Atmosphere, Hydrosphere, and Biosphere - Constraints from Ore Deposits, Petroleum Geology of NW Europe: 50 Years of Learning – Proceedings of the 8th Petroleum Geology Conference, This site uses cookies. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Alireza Malehmir, Raymond Durrheim, Gilles Bellefleur, Milovan Urosevic, Christopher Juhlin, Donald John White, Bernd Milkereit, Geoff Campbell; Seismic methods in mineral exploration and mine planning: A general overview of past and present case histories and a look into the future. Due to high metal prices and increased difficulties in finding shallower deposits, the exploration for and exploitation of mineral resources is expected to move to greater depths. MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Relevance of Geophysics across the world is as a result of oil and solid mineral exploration. The Kylylahti area is characterized by folded and faulted, steeply dipping geological contacts and structures. You could not be signed in. Seismic reflection methods have been used for the exploration of mineral resources for several decades. However, despite their unmatched spatial resolution and depth penetration, they only have played a minor role in mineral discoveries so far. Once you are registered, click here to go to the submission form. 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