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Academic literature on the topic 'Magnetic prospecting Magnetic prospecting Magnetometers'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Magnetic prospecting Magnetic prospecting Magnetometers"

1

Dransfield, Mark. "Searchlights for gravity and magnetics." GEOPHYSICS 80, no. 1 (January 1, 2015): G27—G34. http://dx.doi.org/10.1190/geo2014-0256.1.

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The development of mental schemata is important in developing an understanding of physical phenomena and processes. Gravitational and magnetic fields are often visualized by geophysicists as equipotential surfaces (for gravity) and field lines (for magnetics). In these cases, the schemata treat the geology as the source of the field. In seismic and electromagnetic prospecting, one instead visualizes a field that is emitted by the instrument. Example schemata are traveling wavefronts (seismic) and smoke rings (electromagnetic induction in the dissipative limit). I carried this instrument-focused conceptualization over to potential field prospecting by a schema, which envisages the instrument as a probe, illuminating the earth in a manner analogous to a searchlight. Different potential-field instruments (potentiometers, gravimeters, magnetometers, and gradiometers) each have different beam characteristics and consequently illuminate the earth in different ways. This schema provides a new way of visualizing potential fields in prospecting with applications in instrument development, data acquisition and processing, and interpretation.

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2

Fu, Guo Hong, and Tian Chun Yang. "Theoretical Analysis of Magnetic-Electric Prospecting Method for Piping and Seepage Detection of Dyke." Applied Mechanics and Materials 103 (September 2011): 587–91. http://dx.doi.org/10.4028/www.scientific.net/amm.103.587.

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On the basis of presenting the piping and seepage detection by magnetic-electric prospecting method, the authors analyzed and testified validity of the method. According to calculated results, the magnitude of magnetic field of artificial current was smaller on section if electrodes and cables were set rationally. Usually, the magnetic field magnitude of piping had several times to more than decuple comparing with magnetic field of artificial current. So, the magnetic abnormity could be detected easily by high-precision magnetometers. At the same time, their curves’ characteristics were different evidently. The analysis result shows that the piping and seepage of dyke can be detected by combining method of direct current supplying and high-precision magnetic survey.

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3

Clark, Anthony J. "Archaeological geophysics in Britain." GEOPHYSICS 51, no. 7 (July 1986): 1404–13. http://dx.doi.org/10.1190/1.1442189.

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I describe the approach followed by the Ancient Monuments Laboratory in adapting the instrumentation and techniques of resistivity and magnetic prospecting to the near‐surface problems of mapping buried archaeological sites. Such sites demand rapid and intensive ground coverage and the highest possible spatial resolution and instrument sensitivity. Resistivity is used largely for planning building foundations. Optimized resistivity results have required comparative studies of electrode configurations and the effect on resistivity of climatic variations in different lithologies. Magnetic prospecting is especially effective for detecting (1) fired structures such as kilns, and (2) excavated features such as ditches and pits filled with topsoil of relatively high susceptibility (which is further enhanced by human activities). Speed and resolution requirements have caused the proton magnetometer to be abandoned in favor of the fluxgate gradiometer. Valuable information about human activity can also be obtained from magnetic susceptibility measurements on topsoil.

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4

Liu, Qiang, and Run Min Peng. "Application of High-Precision Magnetic Survey to the Investigation of Mineral Resources in Halaganlawusu Area, Inner Mongolia." Advanced Materials Research 1073-1076 (December 2014): 2001–4. http://dx.doi.org/10.4028/www.scientific.net/amr.1073-1076.2001.

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In this paper 1:10 000 high-precision magnetic survey work has been done using GSM-19T proton magnetometer in Halaganlawusu area. There were data processing including gridding, filtering, reduction to the pole, continuation, derivation, and so on. By precise interpretation and inference with magnetic anomaly, the distribution characteristics of basic rock mass was found out. According to the magnetic survey data and geological research, fitting-inversion of measured magnetic section P1, P2 were done. It preliminarily concluded the distribution characteristics of underground ore rock mass and achieved the effect of the geophysical prospecting.

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Liang, Shengjun, Siyuan Sun, and Hongfei Lu. "Application of Airborne Electromagnetics and Magnetics for Mineral Exploration in the Baishiquan–Hongliujing Area, Northwest China." Remote Sensing 13, no. 5 (February 27, 2021): 903. http://dx.doi.org/10.3390/rs13050903.

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Airborne electromagnetics is an effective and efficient exploration tool in shallow mineral exploration for its high efficiency and low cost. In 2016, airborne electromagnetic and airborne magnetic surveys have been carried out at the border of Xinjiang Uygur Autonomous Region and Gansu Province, the Northwest China. With an integrated system, the airborne electromagnetics and airborne magnetic data were collected simultaneously by AreoTEM-IV system from Aeroquest International Limited in Vancouver, BC, Canada, and the CS3 Cesium Vapor magnetometer from Scintrex in Concord, ON, Canada. About 3149 line-km of both data with 250 m line space were acquired. After data processing, the comprehensive analysis and interpretation of resistivity and magnetic anomalies has been carried out to infer lithological structure and outline the potential ore deposits. Verified by the ground surveys, seven outlined anomalies are consistent with the known ore sites, and one new gold deposit and several mineralization clues were found. The prospective reserves of gold are expected to exceed 10 tons. Besides, some prospecting target areas were outlined as the possible locations of copper–nickel deposits. The successful case shows the airborne magnetic data accords with geological structures, and the airborne electromagnetic method is effective in finding metal mineral resources, which can help to quickly identify potential ore targets with no surface outcrop.

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Nilov, M. Y., L. I. Bakunovich, N. V. Sharov, and B. Z. Belashev. "D magnetic model of the Earth’s crust of the White Sea and adjacent territories." Arctic: Ecology and Economy 11, no. 3 (September 2021): 375–85. http://dx.doi.org/10.25283/2223-4594-2021-3-375-385.

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An important task for the White Sea region, Russia’s second largest diamond-producing province, is the search for magmatic bodies overlapped by sedimentary cover via magnetometer survey. The models, linking local and magnetic anomalies with their sources, are essential for interpretation of search results. The aim of the study is to build a 3D magnetic model of the Earth’s crust for the White Sea region using aeromagnetic data and the modeling technologies of the Integro software package. The simulation is basing on a digital map of the pole-reduced anomalous magnetic field. The sources of magnetic anomalies are believed to be located in the Earth’s crust. The researchers obtained 3D distribution of the relative magnetic susceptibility of rocks by solving the inverse problem of magnetic prospecting. To separate the magnetic sources by spatial frequencies and depth, the model magnetic field was recalculated upward, as well as the TDR derivatives, which determine the lateral boundaries of the sources of positive magnetic field anomalies, were calculated. The researchers further analyzed 2D distributions of the magnetic sources of the model for vertical and horizontal sections with depths of 10, 15 and 20 km, thus proving the relationship between the surface and deep structures of the magnetic sources of the Earth’s crust in the region.

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DAVYDOV, Vadim Anatol’evich. "Geophysical surveys in the area of the Krylatovskaya water well." NEWS of the Ural State Mining University 1 (March 15, 2021): 65–73. http://dx.doi.org/10.21440/2307-2091-2021-1-65-73.

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Relevance and purpose of the work. Surface sources of clean water are increasingly depleted. In this regard, the role of underground sources of drinking and domestic water supply is increasing. Geophysical exploration methods can be an e ective tool for fnding groundwater. The tasks of the research included determining the possibilities of magnetic prospecting in the areal search for promising zones, and identifying the features of electromagnetic fields during audiomagnetotelluric and magnetovariational soundings in the area of an operating water well. Methodology. The magnetic field was surveyed with an MMP-203 proton magnetometer (Geologorazvedka plant, Leningrad). Electrical exploration included vertical electrical sounding (VES) with ERA equipment (GNPP Geologorazvedka, St. Petersburg) and recording of audio magnetotelluric fields with OMAR-2 equipment (IGF UB RAS, Ekaterinburg). Results. The result of the magnetic survey was a map of the anomalous magnetic field of the study area, where the water-abundant groundwater zone of the weathering crust can be distinguished by structural features. The zones of tectonic faults, promising for the presence of fractured-vein waters, are confedently distinguished by positive linear anomalies of the magnetic field. The characteristic features of electromagnetic fields during audiomagnetotelluric and magnetovariational soundings in the area of distribution of fractured waters have been clarified. The most revealing behavior is the behavior of the real and imaginary quadratures of the magnetovariational tipper, characterized by minimum values and zero crossing, respectively. According to the results of electromagnetic sounding, an increase in the thickness of the weathering crust with a decrease in resistance is recorded in the area of the water intake well, which is evidence of its water cut. Conclusions. The significance of magnetic prospecting for clarifying the structural and geological structure of the territory when searching for water-saturated zones has been determined. The high e£ciency of electromagnetic soundings on direct and alternating current was confirmed to determine the nature, depth and power of the identied structures. Traditionally studied, in the search and exploration of groundwater, geophysical felds are replenished with new electromagnetic parameters. These include the module and quadratures of the audio range magnetovariational tipper. The research results indicate that these parameters are anomalous in relation to aquifers, which allows us to give reasonable recommendations on the location of drilling production wells.

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Davydov, Vadim A. "Geophysical research at the Revda intersection of the Serov-Mauk regional fault." Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal 1 (March 30, 2021): 64–69. http://dx.doi.org/10.21440/0536-1028-2021-2-64-69.

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Research aim is to study the characteristic features of geophysical fields over the main geological structures in the zone of influence of the Serov-Mauk regional fault in the Middle Urals. Methodology. Electromagnetic studies included an express version of audiomagnetotelluric sounding (AMT) with a broadband OMAR-2m receiver (Institute of Geophysics UB RAS, Ekaterinburg). Office processing is based on obtaining frequency spectra of impedance using fast Fourier transform, and their transformation into deep sections of electrophysical parameters of the medium. Magnetic prospecting was carried out using GEM GSM-19T proton magnetometer (GEM Systems, Canada). Gamma-field survey was carried out with a survey radiometer SRP-68-01 (Electron, Zhovti Vody). Results. Based on observation processing results, high-quality sections of electrical resistivity and effective longitudinal conductivity were constructed on the parametric profile, as well as graphs of magnetic and radiation fields. The studies revealed features of change in the electrophysical parameters and potential fields over various geological structures of the near-contact fault zone. Summary. The signs of the main geologic features border lines were identified by changes in physical properties. The lithological and tectonic boundaries have been identified of a complex rock assemblage adjacent to the regional fault according to the characteristic anomalies of geophysical parameters. Geophysical survey results comply with the real geological conditions of the study area.

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Davydov, Vadim, and Andrei Nazarov. "Geophysical survey at the southern end of the Degtyarsky pyrite deposit." Izvestiya vysshikh uchebnykh zavedenii Gornyi zhurnal, no. 2 (March 30, 2020): 37–43. http://dx.doi.org/10.21440/0536-1028-2020-2-37-43.

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Research aim is to study features peculiar to geophysical fields over the main geological features of the southern part of the Degtyarsky pyrite deposit at the Middle Urals. Methodology. Electromagnetic survey included symmetrical electric profiling (SEP) with ERA-MAX equipment (ERA Research and Production Enterprise, St. Petersburg) and rapid audio-magnetotelluric sounding (ATMS) with OMAR-2m wideband receiver (Institute of Geophysics UB RAS, Ekaterinburg). Magnetic survey was carried out with the help of the proton procession magnetometer GSM-19T (GEM Systems, Canada), gamma field survey was carried out with a survey meter SRP-68-01 (Electron, Zhovti Vody). Results. According to the results of observational analysis, high-quality sections of electrophysical parameters of the environment were constructed at the parametric profile together with the charts of other geophysical fields. The studies have shown significant changes of resistivity and potential fields anomalies over various geological features of the ore field. Summary. Geophysical indications of border line of the main geologic features have been determined. Excessive electrical conductivity of ore control tectonic structures and radiation anomaly have been revealed in the promises of the ore body, which can serve a prospecting criterion for a similar ore body. Geophysical results are well within the existing geological data on the Degtyarsky mine.

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10

Luo, Piao, and Tiancheng Hu. "Application of Computer Program Combined with Magnetic Prospecting in Polymetallic Ore Prospecting." Journal of Physics: Conference Series 1648 (October 2020): 032001. http://dx.doi.org/10.1088/1742-6596/1648/3/032001.

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Dissertations / Theses on the topic "Magnetic prospecting Magnetic prospecting Magnetometers"

1

Yee, Chin-ming. "Magnetic and gradiometer survey of a site in northeastern Lantau Island Hong Kong." Click to view the E-thesis via HKUTO, 2002. http://sunzi.lib.hku.hk/hkuto/record/B43895025.

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Naudé, Corus. "Target selection from airborne magnetic and radiometric data in Steinhausen area, Namibia." Thesis, Rhodes University, 2012. http://hdl.handle.net/10962/d1001520.

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The eastern branch of the late Proterozoic Damara Orogenic Belt of central Namibia hosts various copper, gold, manganese and uranium deposits, but in the vicinity of Steinhausen, approximately 145 km northeast of Windhoek, the Damara Belt becomes increasingly covered by recent Kalahari cover sediments resulting in little known geology and subsequent lack of discovered economic mineral deposits. Airborne magnetic and radiometric data over the Steinhausen Study Area was enhanced through image processing and filtering to accentuate characteristics of subsurface geology that, by comparing these characteristics to known geology, aided in the interpretive mapping of lithology, structure and targets for follow-up exploration. As a result, some important observations regarding the regional lithology can be drawn. An arenaceous stratigraphic unit that includes a coarse grained, glassy quartzite below the Kuiseb Formation equates to either the eastern Damaran equivalent of the Nosib Group subjected to high grade metamorphism or, alternatively, the upper part of the pre-Damaran sequence, immediately underlying the Damara. The Kuiseb Formation within the study area is uncharacteristically varied as compared to the same formation further west along the Damaran Orogen and can be subdivided into 5 separate units based on geophysical signature. Structural features evident within the study area include the prominent Kudu and Okahandja Lineaments and straddle an area of inferred uplifted stratigraphy of possibly pre-Damara age. The Ekuja Dome (Kibaran age and host to the Omitiomire copper deposit) is also clearly discernible on the airborne magnetic data and is cross-cut by an east-northeast structural zone. Direct targets for follow-up exploration include the Rodenbeck intrusion, anomalous magnetic bodies and numerous radiometric anomalies present within the study area. Identified dome-like features are considered prospective for Omitiomire-style deposits and the Okatjuru Layered Complex is considered a possible source of copper, chromite, magnetite, ilmenite, nickel and the platinum group elements.

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Yee, Chin-ming, and 庾前明. "Magnetic and gradiometer survey of a site in northeastern Lantau Island Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B43895025.

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4

Sunderland, Andrew. "Characterising and improving a magnetic gradiometer for geophysical exploration." University of Western Australia. School of Physics, 2009. http://theses.library.uwa.edu.au/adt-WU2010.0111.

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[Truncated abstract] Magnetic gradiometers are powerful tools for mineral exploration. The magnetic field contains valuable information about the mineral content of the surveyed terrain. The magnetic gradient specifies the amount of spatial variation in the direction and magnitude of the magnetic field. Surveys that measure the magnetic gradient provide vastly more information about geological targets than the magnetic field alone. This technology could have enormous benefits in terms of new discoveries and lower exploration costs. The magnetic gradient is normally calculated by subtracting the outputs of two total field magnetometers which are separated by a baseline. In 1997, a direct string magnetic gradiometer (DSMG) was developed that directly measures magnetic gradients using only a single string as its sensing element. This thesis describes research conducted to improve the sensitivity and performance of the DSMG. The main advantage of the DSMG is that only gradients can induce second harmonic vibrations in the string. Thus, the DSMG is insensitive to uniform magnetic fields that we are not interested in, such as the global magnetic field of the Earth. By using inductive electronics to measure second harmonic string vibrations, we can select to measure the magnetic gradient of nearby targets. Recent work has shown that a magnetic gradiometer with a noise floor of 0.01 nT/m/ v Hz should be sufficiently sensitive for geophysical exploration. In order to reach this goal, this thesis presents an investigation of all noise sources affecting the DSMG. ... Gas damping is negligible in high vacuum and no vibration isolation is required. This means that longer strings with low resonant frequencies can be used. Using theoretical modelling, I show that a space borne DSMG should be able to match the white noise level of SQuID based magnetic gradiometers and have a lower 1/f noise corner. Deployment in space could be the most viable application of the DSMG because of the ease of operation and enhancement of sensitivity. If the thermal noise level is reduced then other sources of noise will start to become more important. When rotated in the Earth's magnetic field, the DSMG detects a pseudo magnetic gradient despite the field being almost uniform. A possible cause is magnetically susceptible parts which are magnetically aligning with the Earth's field. I have conducted a thorough investigation of magnetic susceptible parts in the DSMG and reported the results in this thesis. In the DSMG, a pair of inductive pickup coils are used to measure the string's displacement with a root mean square accuracy of 1011 m/ v Hz. This is adequate at present but the inductive electronics may not be sensitive enough after other improvements in the DSMG are implemented. Here, I present a new capacitive displacement readout with a high sensitivity of 1013 m/ v Hz. The thesis also presents some magnetic gradient measurements in the lab and the results of a ground survey in the field. These trial measurements are used to characterise the DSMG and demonstrate its effectiveness for airborne surveying.

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GRUSZKA, THOMAS PETER. "INDUCED POLARIZATION AND ITS INTERACTION WITH ELECTROMAGNETIC COUPLING IN LOW FREQUENCY GEOPHYSICAL EXPLORATION." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184239.

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Starting from the dynamic equations of electromagnetics we derive mutual impedance formulas that include the effects of induced polarization (IP) and electromagnetic (EM) coupling. The mutual impedance formulas are given for four geometries: a fullspace, a cylinder in a fullspace, a halfspace, and a layer over a halfspace. IP effects are characterized by a Cole-Cole model, the properties of which are fully investigated. From the general mutual impedance formulas specific limiting forms are defined to characterize the IP and EM effects. Using these limiting forms a framework is developed to justify the addition or multiplication of the two effects. The additive and multiplicative models are compared in the cylinder and layer geometries with the conclusion that the additive model proves to be more accurate over a wider range of frequencies than the multiplicative model. The nature of the IP and EM effects is illustrated in all four geometries showing the effects of relevant parameters. In all cases it is shown that the real part of the mutual impedance contains important IP information that is less influenced by EM effects. Finally the effects of boundaries are illustrated by the cylinder and layer geometries and a theory is developed to incorporate EM effects and IP effects from multiple regions which utilizes frequency dependent real dilution factors. We also include a brief review of some EM "removal" schemes and dilution theory approximations.

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Casto, Daniel W. "Calculating depths to shallow magnetic sources using aeromagnetic data from the Tucson Basin." Tucson, Ariz. : U.S. Dept. of the Interior, U.S. Geological Survey, 2001. http://geopubs.wr.usgs.gov/open-file/of01-505/.

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Pilkington, Mark. "Determination of crustal interface topography from potential fields." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=71958.

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A method is presented for the determination of interface topography of multi-layered crustal models from gravity or magnetic data. The technique is developed within the framework of discrete linear inverse theory and exploits the quasi-linearity of the problem to derive a simple cost-effective algorithm suitable for use on large gridded data sets.
Variation of auxiliary parameters allows a suite of acceptable models to be produced rapidly and appraised in the light of available geological and geophysical evidence. When independent knowledge concerning the behaviour of specified interfaces is available, the incorporation of such data in the form of linear equality constraints is outlined.
The proposed method is applied to Curie isotherm and Moho mapping in the Abitibi greenstone belt.

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8

Pickartz, Natalie Marie [Verfasser], Wolfgang [Akademischer Betreuer] Rabbel, and Jörg [Gutachter] Ebbing. "Quantitative Interpretation of Magnetic Measurements in Archaeological Prospecting / Natalie Marie Pickartz ; Gutachter: Jörg Ebbing ; Betreuer: Wolfgang Rabbel." Kiel : Universitätsbibliothek Kiel, 2020. http://d-nb.info/121329472X/34.

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Pickartz, Natalie Marie Verfasser], Wolfgang [Akademischer Betreuer] [Rabbel, and Jörg [Gutachter] Ebbing. "Quantitative Interpretation of Magnetic Measurements in Archaeological Prospecting / Natalie Marie Pickartz ; Gutachter: Jörg Ebbing ; Betreuer: Wolfgang Rabbel." Kiel : Universitätsbibliothek Kiel, 2020. http://nbn-resolving.de/urn:nbn:de:gbv:8-mods-2020-00207-9.

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Whiting, Thomas H. "A study of the lithology and structure of the eastern Arunta Inlier based on aeromagnetic interpretation : a lithological subdivision and structural history of the eastern Arunta Inlier, with particular emphasis on the relationship between magnetic mineral petrogenesis, rock magnetism and aeromagnetic signature /." Title page, contents and abstract only, 1987. http://web4.library.adelaide.edu.au/theses/09PH/09phw6125.pdf.

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Books on the topic "Magnetic prospecting Magnetic prospecting Magnetometers"

1

Gosen, B. S. Van. Ground magnetometer surveys over known and suspected breccia pipes on the Coconino Plateau, northwestern Arizona. Washington, [D.C.]: U.S. G.P.O., 1989.

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2

1927-, Keller George Vernon, ed. Inductive mining prospecting. Amsterdam: Elsevier, 1985.

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Kaufman, Alexander A. The theory of inductive prospecting. Amsterdam: Elsevier Science B.V., 2001.

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4

Mikov, B. D. Gravirazvedka i magnitorazvedka pri poiskakh obʺektov trubochnoĭ formy. Moskva: "Nedra", 1985.

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Campbell, David L. Time-domain geoelectric soundings in Jackson Hole, Wyoming. Denver, Colo: U.S. Geological Survey, 1995.

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Ponce, David A. Gravity, magnetic, and physical property data of the Deep Creek Range and vicinity, eastern Nevada and western Utah. [Menlo Park, CA]: U.S. Geological Survey, 1993.

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Overstreet, William C. Review of the use of magnetic concentrates in geochemical exploration. [Reston, Va.?]: Dept. of the Interior, U.S. Geological Survey, 1985.

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Overstreet, William C. Review of the use of magnetic concentrates in geochemical exploration. [Reston, Va.?]: Dept. of the Interior, U.S. Geological Survey, 1985.

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Overstreet, William C. Review of the use of magnetic concentrates in geochemical exploration. [Reston, Va.?]: Dept. of the Interior, U.S. Geological Survey, 1985.

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Murthy, I. V. R. Gravity and magnetic interpretation in exploration geophysics. Bangalore: Geological Society of India, 1998.

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Book chapters on the topic "Magnetic prospecting Magnetic prospecting Magnetometers"

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Tsokas, G. N., and C. B. Papazachos. "The Applicability of Two-dimensional Inversion Filters in Magnetic Prospecting for Buried Antiquities." In Theory and Practice of Geophysical Data Inversion, 121–44. Wiesbaden: Vieweg+Teubner Verlag, 1992. http://dx.doi.org/10.1007/978-3-322-89417-5_9.

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Linford, Neil, Paul Linford, and Andrew Payne. "Advanced magnetic prospecting for archaeology with a vehicle-towed array of cesium magnetometers." In Innovation in Near-Surface Geophysics, 121–49. Elsevier, 2019. http://dx.doi.org/10.1016/b978-0-12-812429-1.00005-2.

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Mušič, Branko, and Barbara Horn. "Results of Geophysical Investigations Related to the Excavated Remains of the Late Antique and Early Mediaeval Iron Production Sites in the Podravina Region, Croatia." In Interdisciplinary Research into Iron Metallurgy along the Drava River in Croatia, 18–42. Archaeopress Archaeology, 2021. http://dx.doi.org/10.32028/9781803271026-3.

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Several sites containing relatively high quantities of waste products from the bloomery iron production collected during archaeological field surveys in the Podravina region as part of the TransFER project were subsequently investigated by magnetic prospecting and topsoil apparent magnetic susceptibility mapping. The magnetic method proved to be very effective in identifying various archaeological remains of iron production activity in situ due to the high magnetic susceptibility of materials present in iron production workshops, which was confirmed in relation to the results of archaeological excavations at Sušine near Virje as well as Velike Hlebine and Dedanovice near the Hlebine sites. Reasons for the higher magnetic susceptibility include, in addition to the strongly magnetic minerals in iron production waste, fragments of fired clay from furnace construction and features such as shallow pits with burnt bottoms, as well as any other materials that have been exposed to high temperatures (burnt house plaster, etc.). The sites with remains of bloomery iron production were therefore reliably identified on the basis of their magnetic properties and the results were evaluated in relation to the excavated features. This study has also demonstrated that the sites with iron production activity present can also be reliably identified on the basis of changes in the apparent magnetic susceptibility of the topsoil to a depth of only 5 cm, after partial destruction of the archaeological layers by deep ploughing. These anomalies generally have a wider spatial distribution than those detected by magnetometers, due to a wide dispersion of material by ploughing mechanisms. With the aim of identifying layers with major enrichments of bog iron ore, electrical resistivity tomography (ERT) measurements were carried out at the site Novigrad Podravski–Milakov Berek, where pieces of bog iron ore appeared on the surface. Based on these results, we have not been able to reliably identify ore deposits, but it has been shown that it is possible to identify layers of relatively low resistivity on ERT profiles that have increased iron mineral content, as confirmed by X-ray analysis of core samples from shallow drillings at several other locations in the Podravina region.

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López Loera, Héctor. "The Magnetometry—A Primary Tool in the Prospection of Underground Water." In Magnetometers - Fundamentals and Applications of Magnetism. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.84322.

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One of the most important problems in arid and semi-arid zones in the Mexican Mesa Central is the one related to the exploration and exploitation of groundwater. It is found at depths over 200 m, and movement is primarily through fractures. This work presents a geophysical methodology, which shows the potential of combining natural and induced methods to locate confined aquifers in fault zones. The study begins by interpreting the aeromagnetic survey, mainly by searching alignments associated with low magnetic anomalies, which are correlated with faults zones, and/or fractures and/or geologic contacts where ferromagnetic minerals have undergone oxidation due to their association with recharged zones. These aeromagnetic alignments are confirmed on land by a ground magnetic survey. Based on these interpretations, electrical methods include sections and vertical electrical sounding are used to verify if the zones are correlated to the underground moisture. If both permeability and moisture are met together, then they considered as zones with a high probability of locating ground water in the Mexican Mesa Central.

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Datsenko, Liudmyla, and Ivan Lezhenkin. "TEMRYUK PROSPECTING AREAS (EASTERN AZOV AREA) OF LINING MATERIALS: GEOLOGY, STRATIGRAPHY, GEOLOGICAL-GEODESIC WORKS." In State trends and prospects of land sciences environment physics mathematics and statistics’ development (1st ed). Primedia eLaunch LLC, 2020. http://dx.doi.org/10.36074/stplsepmad.ed-1.02.

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Temryuk prospecting areas are situated in the Volodarskyi district of Donetsk region, in 3 km northen outside the village Starchenkov, on the right bank of the Temryuk River. Geographic coor-dinates to the center of the Temryuk prospecting areas: 37 degrees 12 minutes 30 seconds of eastern latitude, 47 degrees 3 minutes of 30 seconds of northen latitude. The lining materials are widely used in construction as an excellent long-term and durable material. The following types of topo-graphic and geodetic works were performed during the search and assessment works within the Temryuk prospecting areas: geodetic justification; concentration of geodetic laying-out; geophysical support of ground magnetic survey over a network of 100x10 m; binding of drilled wells to points of geodetic laying-out (planned and high-altitude). Temryuk prospecting areas of plagiogranite lin-ing materials has favorable mining and geological conditions for development into blocks. The pro-cessing of scientific works of the world geological community regarding granite (plagiogranite) de-posits led us to the conclusion that the granites of the Temryuk area of the Volodarskyi area have higher geological and economic indicators, the study of which is a further goal for the authors.

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Leach, Peter, Kerri Holland, and Joseph F. Balicki. "The Application of Magnetic Prospecting Methods on the 1863 Bivouacs of the 2nd Corps, 3rd Division, 2nd Brigade." In From These Honored Dead, 207–21. University Press of Florida, 2014. http://dx.doi.org/10.5744/florida/9780813049441.003.0014.

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Conference papers on the topic "Magnetic prospecting Magnetic prospecting Magnetometers"

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Grandis, H., and P. Sumintadireja. "Ground Magnetic Survey for Shallow Iron Ore Prospecting." In EAGE-HAGI 1st Asia Pacific Meeting on Near Surface Geoscience and Engineering. Netherlands: EAGE Publications BV, 2018. http://dx.doi.org/10.3997/2214-4609.201800406.

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Gillot, C., H. Yahoui, and G. Rojat. "Fine magnetic field prospecting of an inverter DC bus." In 2004 IEEE International Symposium on Industrial Electronics. IEEE, 2004. http://dx.doi.org/10.1109/isie.2004.1571772.

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V. Herwanger, J., H. R. Maurer, J. Leckebusch, and A. G. Green. "Acquisition, processing and inversion of magnetic data in archaeological prospecting." In 3rd EEGS Meeting. European Association of Geoscientists & Engineers, 1997. http://dx.doi.org/10.3997/2214-4609.201407381.

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Hao Hu and Yangang Wu. "High-precision magnetic measurement data in Huailai prospecting application areas." In 2011 International Conference on Multimedia Technology (ICMT). IEEE, 2011. http://dx.doi.org/10.1109/icmt.2011.6001850.

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Martyshko, Petr. "ALGORITHM FOR SOLUTION 3D DIRECT AND INVERSE PROBLEM OF MAGNETIC PROSPECTING." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/14/s05.002.

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Kravchenko, J. B., N. I. Lebib, and V. I. Tregubenko. "Search for Gold with the Help of Magnetic Prospecting in Pyrrhotine." In 64th EAGE Conference & Exhibition. European Association of Geoscientists & Engineers, 2002. http://dx.doi.org/10.3997/2214-4609-pdb.5.p287.

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N. Tsokas, G. "A Comparison of Homomorphic and Wiener Deconvolution in the Magnetic Prospecting." In 57th EAEG Meeting. Netherlands: EAGE Publications BV, 1995. http://dx.doi.org/10.3997/2214-4609.201409563.

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Itkis, S. E. "Study of Industrial Disturbances Affecting Magnetic Prospecting Data in Archaeological Sites." In Near Surface Geoscience 2013. Netherlands: EAGE Publications BV, 2013. http://dx.doi.org/10.3997/2214-4609.20131358.

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Itkis, S. E., S. Feinstein, and B. E. Khesin. "Archaeomagnetic Provinces in Israel as a Basis for Magnetic Prospecting of Archaeological Sites." In Near Surface 2008 - 14th EAGE European Meeting of Environmental and Engineering Geophysics. European Association of Geoscientists & Engineers, 2008. http://dx.doi.org/10.3997/2214-4609.20146243.

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Itkis, S. E., B. E. Khesin, and S. Feinstein. "Detailed Magnetic Prospecting at Archaeological Sites of Israel - Complications and Physical-Archaeological Models." In 64th EAGE Conference & Exhibition. European Association of Geoscientists & Engineers, 2002. http://dx.doi.org/10.3997/2214-4609-pdb.5.p278.

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Reports on the topic "Magnetic prospecting Magnetic prospecting Magnetometers"

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Thomas, M. D. Gravity and magnetic prospecting for massive sulphide deposits: a short course sponsored under the Bathurst Mining Camp EXTECH II Initiative. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1997. http://dx.doi.org/10.4095/209241.

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