geological mapping Articles

  • Use of geological mapping tools to improve the hydraulic performance of SuDS

    Most cities in Denmark are situated on low permeable clay rich deposits. These sediments are of glacial origin and range among the most heterogeneous, with hydraulic conductivities spanning several orders of magnitude. This heterogeneity has obvious consequences for the sizing of sustainable urban drainage systems (SuDS). We have tested methods to reveal geological heterogeneity at field scale ...


    By IWA Publishing

  • Case study: RMOTC - Using existing wells, hydro-geologic barriers are mapped.

    In August of 2005, Willowstick Technologies, LLC performed an AquaTrack study at the Teapot Dome oil field near Casper, Wyoming. The project was performed together with the assistance of the Rocky Mountain Oilfield Testing Center (RMOTC), a unit of the United States Department of Energy. The purpose of the project was to demonstrate how the AquaTrack technology can be applied to ...


    By Willowstick Technologies LLC

  • Special purpose mapping for waste disposal sites: Report of IAEG Commission 1: Engineering Geological Maps

    This report results from work that was first proposed to a meeting of the International Association of Engineering Geology (IAEG), Commission No.1 held in Bratislava (Slovakia) in 1992. Following the publication of the Commissions report on Engineering Geological Maps (Engineering geological maps (1976) and reports on the description and classification of rock and soil and on recommended symbols ...


    By Springer

  • Geological characterization case study

    Oil Storage Terminal Grand Bahama Island, Bahamas GeoView, Inc. performed a geophysical investigation across a 65-acre area where large bulk oil storage tanks were planned for construction. The purpose of the investigation was to evaluate the condition of the underlying limestone, which from previous work was known to be suspect in certain areas. Of primary ...


    By GeoView, Inc.

  • Regional geological recognition for the implementation of a urban geothermal concept

    A reflection seismic survey was performed in the city of Lausanne (CH) to map geological layers relevant to geothermal energy production. By using a wireless seismic system and a powerful seismic vibrator source we were able to high quality results despite the presence of elevated urban noise levels. The new subsurface maps allow the estimation of the geothermal potential for the city of ...


    By Geo2X

  • An approach to assess risks of carbon geological storage technology

    Carbon geological storage (CGS) projects are designed to securely store carbon dioxide (CO2) for thousands of years. Because of this, there are several studies to evaluate the potential risks of long–term storage of CO2 in geological formations. This paper presents a new method for the qualitative risk assessment of CGS: the risk ...


    By Inderscience Publishers

  • Pollution mapping case study

    This exploration survey used the cross-hole resistivity method to detect if there was industrial waste water leakage from an industrial waste water process pond. Chemical analyses concluded that this specific waste water has a much lower resistivity than normal water. The figure below shows that the area above 45m is a relatively high resistive zone made of limestone. Below this depth is a middle ...

  • Mapping sedimentation features in an alluvial valley

    Sediments of the Rhone river are characterized by strong heterogeneity between clay, sand and gravel units. To map these units, we employed an electromagnetic instrument (DualEM421). This instrument das the advantage that no contact to the ground is required and it can be carried on foot. With the interpreted data it was possible to map different geologic units to a depth of up to 4.5m. ...


    By Geo2X

  • A comparison of landscape structure inside and outside the gates: analysis of the regional landscapes of four US Department of Energy facilities using US Geological Survey quadrangle maps and FRAGSTATS

    The US Department of Energy (USDOE) facilities encompass large tracts of land that include important regional ecological resources. The historical development and continued operation of these facilities has changed the structure of regional landscapes. A quantitative analysis was performed to determine if patterns of land use within the boundaries of selected USDOE facilities could be ...


    By Inderscience Publishers

  • Fluoride contamination mapping of groundwater in Northern India integrated with geochemical indicators and GIS

    There are many incidents of increasing fluoride concentrations observed in India's groundwater. In the present study, the fluoride content was chemically analysed and integrated with geochemical model WATEQ4F sampled from Allahabad district, Northern India, with other water quality parameters. Geospatial technique was employed to depict the spatial distribution of fluoride concentrations, ...


    By IWA Publishing

  • Mapping Top of Rock with Seismic Refraction and ERI case study

    Industrial Facility, Tennessee An environmental assessment and remediation design project was conducted at a chemical manufacturing facility in eastern Tennessee. As part of the project, GeoView was asked to determine the depth to limestone bedrock underlying the project site and identify any suspected karst features within the upper portion of the limestone stratum. ...


    By GeoView, Inc.

  • Hyperspectral thermal infrared line profiling for mapping surface mineralogy

    Abstract An airborne hyperspectral thermal infrared line profiling spectrometer (TIPS) has been developed by CSIRO and Fugro Airborne Surveys to measure and map surface mineralogies. TIPS is a spectrometer based on an FTIR instrument, recording radiance channel in about 100 channels in the 8 mm to 13 mm wavelength range from contiguous 10 meter pixels along the flightline, at a nominal ...


    By D&P Instruments

  • New Maps from Old Photos: Measuring Coastal Erosion

    U.S. Geological Survey scientists and their coauthors from the California Coastal Records Project have found a way to use historical aerial photographs not just to see evidence of coastal erosion, but to accurately measure how much has occurred over time. Applying a low-cost technique called “structure-from-motion” to five sets of oblique aerial photos spanning the years ...

  • Assessing ecological risks at US Department of Energy facilities using methods borrowed from landscape ecology and habitat suitability analysis. Part I. Analysis of historical aerial photography and maps

    Ecological risks are inherently spatial, and the consideration of scale is critical to all aspects of the ecological risk assessment process. Analysis of alterations in land use and habitat quality and quantity in relation to historical, continuing, and future US Department of Energy (USDOE) operations may be as important as assessing impacts resulting from the release of chemical contaminants ...


    By Inderscience Publishers

  • Borehole Log Interpretation

    While employed with Conoco, Inc. analyzed and correlated well-log data in order to produce geologic structural maps of subsurface horizons in Louisiana and Oklahoma, for the purpose of oil and gas prospect generation. Analyzed and correlated well-log data in order to map the top of a highly permeable subsurface formation that was utilized as an injection zone for the disposal of brines generated ...


    By ECA Geophysics

  • A GIS-based methodology to delineate aquifer recharge areas

    A GIS-based methodology to delineate risk areas for contamination of groundwater resources is presented by identifying recharge conditions to the aquifer. Identifying the recharge areas is based upon surface and subsurface geologic conditions that may control the risk of potential oil spill contaminants into the aquifer. This study uses the Chicot aquifer system in southwest Louisiana as a pilot ...


    By Inderscience Publishers

  • The total engineering geology approach applied to railways in the Pilbara, Western Australia

    The application of the total engineering geology approach to the investigation, design, construction and operation of several major iron ore railways in the ancient cratonic Pilbara region of Western Australia is described. The approach is based on developing a thorough understanding of the geological and geomorphological history of the area and adopting strategies such as staged investigations, ...


    By Springer

  • Case Study - Construction Aggregate: Sand

    Geologic Mapping of Sand Unit Thickness Pyramid was contracted to perform an electrical resistivity survey across 230 acres of undeveloped land in North Carolina. The purpose of the survey was to quantify the lateral extents and approximate depth/thicknesses of sandy soils near the ground surface. The client was interested in the potential of the site to be utilized as a sand mine, and ...


    By Advanced Geosciences, Inc.

  • Geology and coal potential of Somaliland

    Geological field mapping along with available geological and drilling data suggest that Somaliland (Northwestern Somalia) has favourable stratigraphy and structure for coal deposits. Lignitic to sub-bituminous coal deposits with ages from Jurassic to Oligocene-Miocene occur in various locations across the country including Hed-Hed valley south of Onkhor, Guveneh hills north of Las Dureh and Daban ...


    By Inderscience Publishers

  • Tools for assessing sea level rise vulnerability

    Increasing sea level has the potential to place important infrastructure we rely on every day at risk, yet we lack good data to make decisions on what to do, when, and with what priority. The objectives of the research were to develop a method for estimating the time scales for various increments of sea level rise (SLR) throughout the 21st century, develop an accurate methodology for predicting ...


    By IWA Publishing

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