geologist Articles

  • Find out why Minestis domain modeling meets the support of resource geologists

    Minestis provides geostatistics-based application for estimation domain modeling including automatic sample clustering into domains and implicit modeling of envelopes. It has never been so quick to achieve reliable domain modeling. ...


    By Geovariances

  • Minestis - automatic domaining - has proven to be efficient with big datasets

    Minestis offers a unique feature called Automatic Domaining which quickly groups borehole samples into domains in an automatic way. Those who have seen the tool run qualifies it as impressive. The classification of samples into geological domains is a fastidious and ...


    By Geovariances

  • 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

  • Electrotelluric Geophysical Exploration

    Noted petroleum geologist Jack Elam writes about the abilities of Geophysic's patented electrotelluric tool known as the Petro-Sonde.  It's ability to give the client the depth, thickness and contents of a pay zone without the need for boreholes first.  By far the most advanced surveying tool on the market today the Petro-Sonde has been used in thousands of surveys all across the globe. ...


    By Geophysics International

  • Drilling: Then & Now

    In a recent conversation with a colleague, we discussed the then and now of drilling. Reflecting back to 1988, it was jarring to realize that we have entry-level Geologists & Engineers today that were born that year! They won’t ever truly know what it was like then, and how far the drilling industry has come. They would be amazed at the lives, limbs, and hearing lost over past decades, ...


    By Woodward Drilling

  • Using the Pencil-Paper Method with a Tablet Computer to Increase Borehole / Well Logging Efficiency

    Traditionally, geologists use pencil and paper when logging soil descriptions, drilling tests, and well diagrams in the field.  We wanted to see if we could speed up this process using a field computer.  We tested a fully ruggedized Yuma2 tablet computer (retail value of $3500) and a consumer grade Dell Venue 8 (retail value $250).  Both computers run a full version of Windows 7 or ...


    By M-Tech Software Inc.

  • Minestis found its audience at WMC 2016

    Our Managing Director, Olivier Bertoli, presented Minestis at the World Mining Congress in Rio de Janeiro in October. The presentation was a success. Vale mentionned there that Minestis is reliable and makes sense. We can say that the software definitely found its audience there. After his presentation, Olivier was congratulated by students, university professors and geologists or exploration ...


    By Geovariances

  • Roadlog: water resources development projects in Southern California.

    Introduction Four projects will be visited as part of the 1999 San Diego Association of Geologists annual field trip, emphasizing water resources development projects in southern California underway at the turn of the 21st Century. This Roadlog directs you to the meeting location for the first day of the field trip, followed by a description of the route and a short summary of each major stop. ...


    By Hargis + Associates Inc

  • Groundwater resource exploration

    Resistivity method is very suitable for groundwater exploration. Two methods can be used, the surface method and crosshole method. Surface method is cost effective, though it is sometime not as accurate as the crosshole method. Geologists usually narrow down the exploration area and then operators can use geophysical methods to find groundwater.  Surface method involves laying two cables on ...

  • Installing Continuous Multi-Chamber Tubing Using Sonic Drilling

    As a geologist, core is the first thing that comes to mind when talking about sonic drilling— continuous, near complete core recovery through almost any lithology. Sand to silt transitions can be logged on a centimeter scale if desired. Geologic contacts can be mapped with accuracy of less than one foot. In an environmental ground water assessment, it seems an awful shame to collect (and pay for) ...


    By Solinst Canada Ltd.

  • Drilling: Then & Now

    In a recent conversation with a colleague, we discussed the then and now of drilling. Reflecting back to 1988, it was jarring to realize that we have entry-level Geologists & Engineers today that were born that year! They won’t ever truly know what it was like then, and how far the drilling industry has come. They would be amazed at the lives, limbs, and hearing lost over past decades, ...


    By Woodward Drilling

  • Building analytical competence for geoscience students through use of Raman spectroscopy

    Introduction: Traditionally, a geologist's analytical toolkit consisted of a hand lens, rock hammer, acid bottle, magnet, and perhaps a polarizing light microscope back in the laboratory. In geoscience professions, these tools are increasingly being supplemented by field and laboratory instrumentation that utilizes spectroscopy. The availability of newly-developed, lower-priced ...


    By B&W Tek

  • Sensitivity of response of LISST-ABS and OBS to size distribution changes

    This Note shows how the calibration of the LISST-ABS acoustic backscatter sensor and of optical backscatter sensor (OBS) changes when water contains a broad distribution of particle sizes, and why LISST-ABS is inherently superior. Particle size distributions in water are usually not very narrow, i.e. particles of more than a single size exist in suspension. It is common practice to consider ...


    By Sequoia Scientific, Inc.

  • Software review: dips v.5.0

    Dips (5.0) for WINDOWS is the latest version of the brawny steregraphic projection program from Roescience'. It comes packed with enoough functionality to provide solutions to the most complex problems in the fields of Earth Sciences or Engineering requiring the analysis of orientation based data. Dip has obviou applications in the fields of: Stability/instability investigations in mining or ...


    By Rocscience Inc.

  • A folded wedge model for determination of true stratigraphic thickness in directional wells

    For exploration and development the geologists and engineers try to know the true stratigraphic thickness (t). The monoclinal and folded bed models are published methods for t calculation. Both models assume parallel beds which can lead to significant deviations. In order to calculate the values of t considering the effects of both folding and stratigraphic variation we propose the 'folded wedge ...


    By Inderscience Publishers

  • Case Study - 28 MW Dual-Flash Power Plant

    Brady Hot Springs, Nevada, USA – 1992 GDA was a partial owner in this successful project and was responsible for exploration and development of the resource. As Manager of Wellfield Development, GDA recommended the comprehensive wellfield development plan, formulated the exploration program, supervised surface geological mapping and geophysical surveys for siting production and injection ...

  • Using EQuIS and ArcGIS for Environmental Decision Support at a Large Oil Refinery

    Untitled Document Abstract Environmental site characterization activities at a ...


    By EarthSoft, Inc

  • Air monitoring in the Bosnian valley of the pyramids – part 2

    In the first part of this series, ‘Air monitoring in the Bosnian Valley of the Pyramids—Part 1’, I recounted my trip to Visoko in March 2015. Bosnia and Herzegovina is a fascinating country and well worth going to—not only to experience Tunnel Ravne and the nearby ...


    By Analox Sensor Technology

  • India - Groundwater governance case study

    Groundwater comprises 97 percent of the worlds readily accessible freshwater and provides the rural, urban, industrial and irrigation water supply needs of 2 billion people around the world. As the more easily accessed surface water resources are already being used, pressure on groundwater is growing. In the last few decades, this pressure has been evident through rapidly increasing pumping of ...


    By IWA Publishing

  • Establishing environmental baseline case study

    Challenge: A major integrated oil company, intending to divest a portfolio of 68 retail petroleum facilities in the northwest United States, requested the services of Antea Group to conduct Phase II Environmental Site Assessments in order to establish an environmental baseline prior to selling the assets. Among the project-specific challenges were a short performance timeframe, a newly ...


    By Antea Group - USA

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