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The key benefits of geophysical methods such as ERT are that they can provide non invasive spatial subsurface information they can be very sensitive to moisture driven deterioration processes and they can be configured to enable remote condition monitoring of assets Key activities and projects The team has developed novel geophysical monitoring technology to enable cost effective remote
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Vertical Electrical Sounding VES is probably the original electrical method from which all other methods derive VES is a DC electrical resistivity method usually conducted using one a Schlumberger or Wenner array These are generally four electrode arrays with progressively larger spacings between the current and/or potential electrodes
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Pyramid utilizes Electrical Resistivity Tomography ERT as a surface geophysical tool to provide information to our clients regarding geologic site conditions hydrogeologic characteristics and conductivity variability associated with environmental concerns We utilize the Advanced Geosciences Inc AGI Supersting R8 multi electrode
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Solving crimes with geology Geoforensics is a method the police and forensic scientists use to help solve murder related crimes Here we uncover cases where the innovative approach of analysing soil evidence proved successful Twenty two series and 200 episodes of the BBC CSI drama Silent Witness testifies to the enduring appeal of
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We here tested the ability of geophysical methods to characterize a large technical landfill installed in a former sand quarry The geophysical surveys specifically aimed at delimitating the deposit site horizontal extension at estimating its thickness and at characterizing the waste material composition the moisture content in the present case
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Incorrect prediction of the rock mass quality can lead to economic problems for the quarry By performing geophysical measurements a more complete understanding of the subsurface geology can be determined This study shows that by doing 2D parallel data sampling a 3D inversion of the dataset is possible which greatly enhances the visualization of the subsurface Furthermore the electrical
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Timing of these events on a global scale can only be answered using correlation among many sections and multiple correlation proxies including biostratigraphy lithostratigraphy geochemistry and geophysical methods Here we present litho and biostratigraphy for five successions located in the southeastern USA To broaden the scope of correlation we also employ carbon and oxygen stable
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The chosen test site was located in a dismissed limestone quarry near the town of Assisi in the Northern Apennines Reconnaissance geophysical methods in landslide investigations Engineering Geology 29 1 59 78 Article Google Scholar Moser T Van Eck and G Nolet 1992 Hypocenter determination in strongly heterogeneous earth models using the shortest path method Journal of
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Fender Geophysics has a long history of undertaking geophysical studies to support mineral exploration We also undertake projects to support groundwater resources quarries infrastructure development monitoring of tailings dams and environmental site inspections The broad range of techniques we can bring to any problem ensure a successful outcome for our clients
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In order to improve productivity through the early detection of fractures in the cutting procedure geophysical methods like GPR EM and ERT have been tested in Dionyssos quarry with its
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The geophysical methods applied at the site facilitated analysis of subsurface conditions extending downward to 200 feet or more below the existing ground surface Horseshoe Casino Baltimore MD GTA provided subsurface explorations and laboratory testing for the new two story Casino with 122 000 SF of gaming space 20 000 SF of food and beverage outlets and associated seven level 3 500 car
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the East Kirkton Limestone locally but within the area of the survey no lateral limits to the formation are observed KEY WORDS Geophysics hot springs magnetic surveys mineralisation resistivity surveys Lower Carboniferous The East Kirkton quarry at Bathgate Fig 1 is the only
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Marble is probably the most popular ornamental stone in the world Technological evolution in the extraction techniques resulted in significant improvements with regard to productivity and quality of the commercial blocks In order to improve productivity through the early detection of fractures in the cutting procedure geophysical methods like GPR EM and ERT have been tested in
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method of site cleanup will involve excavation of portions of the site a refined understanding of the subsurface conditions was required to aid in planning of future delineation studies A geophysical survey including an electromagnetic survey a magnetometer survey and a seismic refraction study were performed at the Bennett s Dump site during the week of December 14 1998 This report
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METHOD Resistivity LOCATION Central NSW BRIEF In 2024 Fender Geophysics were approached by Corkery to undertake a geophysical survey to assist with resource definition at a gravel quarry in central NSW The quarry extracts both gravel and pebbles which are dominantly used for landscaping purposes in the region
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Imaging the subsurface with geophysical methods and routing the quarry have been performed by the quarry management to prevent his losses in terms of time and cost High resolution images may be effectively obtained by ground penetrating radar GPR and electrical resistivity tomography ERT methods
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Collected data for each method were evaluated by state of the art processing and modeling techniques A three layer model depicts the subsurface layers and better delineates the groundwater aquifer and water table elevation The resistivity of the aquifer layer and seismic velocity vary between 40 and 80 Ω m and between 1500 and 2500 m s −1 respectively The average water table elevation
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Needham Market Quarry in Suffolk was operated by Needham Chalks Ltd for more than 50 years having previously been farmland Hopkins Homes purchased the site for redevelopment to provide 266 homes Harrison Group was employed at the pre acquisition stage by Hopkins Homes to provide factual ground investigation information for consultant
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This geophysical research as part of Master s Thesis was the first geophysical project in Diabaswerk Saalfelden Electrical resistivity tomography ERT method and seismic refraction method have been applied to enable more detailed model of the quarry surrounding The expected geological model contains diabase rock metamorphic and
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The main methods of geophysical survey are magnetometry and resistivity although a number of other techniques such as ground penetrating radar are also used With risk minimisation a key concern for most developers geophysical survey can offer a cost effective way of testing large areas for the presence of sub surface remains
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Quarry site assessment Water exploration Geotechnical site investigation optimised location for bridge abutments based on depth to basement Monitoring of leakage from waste management and liquid storage facilities Location of fractured ground and shallow underground openings Soil profiling
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The aim of this project is to investigate how geophysical instruments can be a tool in prospecting for rock quarries and also how they can be a help in which direction they should expand in To have control over the quality of the aggregates is important and therefore to know when the rock mass is changing is of interest for the production Two quarries with different properties were
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One of the method used to determine the amount of overburden of the quarry is by using geophysical survey According to previous study seismic reflection electromagnetic and electrical resistivity have been used in mapping the bedrock[1 3] Seismic refraction survey method is geophysical survey commonly used in exploration
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Geophysical surveying was utilised in order to measure the stiffness or density of the material forming the subgrade MASW and CSWS were selected as being the most appropriate techniques for gaining information on material subgrade MASW and CSWS Both techniques are a seismic geophysical method based on the analysis of Surface waves or
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Geo electric resistivity test was used to delineate the waste materials from natural ground materials Surface and downhole P and S wave velocity measurements were used for the estimation of dynamic elastic properties of the wastes
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In this work we demonstrate the combined use of ERT and seismic methods as a tool to assess geotechnical models used to evaluate subsidence due to ground water level drop at the area of Valtonera in northwestern Greece The simulations were applied on certain geotechnical models corresponding to the studied geophysical lines which were measured over existing fissures The geotechnical model
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Geophysical methods all depend on measuring a physical property of rocks There are only a few such properties shown in Table 1 Table 1 Geophysical properties useful for surveys roughly in order of increasing survey cost Property Typical rocks/minerals Geophysical Methods Notes Magnetic susceptibility Magnetite ultra mafics iron rich rocks Magnetic Mainly used for geologic mapping
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Data acquired were interpreted using the manual partial curve matching method and a fast computer iteration technique to generate the geoelectric layer of various resistivity values and thicknesses The geoelectric sections revealed the lithological sequence as topsoil weathered layer and fresh bedrock
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In order to improve productivity through the early detection of fractures in the cutting procedure geophysical methods like GPR EM and ERT have been tested in Dionyssos quarry with its famous worldwide marbles which have been used for Acropolis of Athens construction
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Geophysical studies were conducted over a shallow mining excavation near a sinkhole that was created by partial collapse of the excavation The main aim of this study was to detect the fractured zones induced by mining activity and so threatening the stability of the surface
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