geologist Articles
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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, ...
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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. ...
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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, ...
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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. It is ...
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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 ...
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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, ...
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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 ...
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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 ...
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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 8. So, we ...
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Using EQuIS and ArcGIS for Environmental Decision Support at a Large Oil Refinery
Untitled Document Abstract Environmental site characterization activities at a large industrial facility can be a complex and costly endeavor. The high volume of data generated from groundwater sampling, soil sampling and other field activities is often difficult to manage. As computer technologies have advanced, new data management and data visualization tools ...
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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 ...
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Exploiting the geological heritage of the Pyrénées-Orientales département - Case Study
A new book about the Pyrénées-Orientales département has been published in BRGM’s Curiosités géologiques collection The need Since the Act of 27 February 2002 on local democracy, geological heritage has been an integral component of the vast inventory of natural heritage compiled for the whole of France, encompassing land, rivers and ...
By BRGM
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Are This Summer’s Earthquakes Cause for Concern?
In July of this year, North America’s west coast experienced a string of earthquakes, some rating as high as 6.7 in magnitude. This recent seismic activity has left many people worried and wondering if these quakes are just par-for-the-course or a sign of something worse to come. Speaking to the Vancouver Sun, Simon Fraser University geologist Ben Ward says that people should be slightly ...
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Results of AMT survey at Patomsky crater case study
The Patomsky crater is located in east part of the Irkutsk region (Russia). This geological object has anomaly appearance and is discordant placed relative to hosting geological structure. The crater has been discovered in 1949 during routine geological survey of the territory by geologist V.V. Kolpakov. The drastic investigations of Patomsky crater by modern technology have begun since 2006. The ...
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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 ...
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Testing the upper limits - Case Study
PROJECT BACKGROUND For two days, hydrogeologist Lee Florea and his fellow explorers have been slowly plodding step by step to the top of Washington’s Mount Rainier. Laden with up to 80 pounds of supplies and scientific gear, they watch enviously as recreational climbers cruise past them carrying half that on their path to the summit. But there’s a big difference between the two ...
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Partner Spotlight: Run for Life
Run for Life Partner Spotlight Village Drill has been privileged to partner with Run for Life, a nonprofit group based in Canada. While Run for Life supports various programs in Canada and Kenya, the Village Drill involvement pertains specifically to their legacy project of well drilling in Kenya, Africa. In Kenya, Run for Life works to foster education as well as cultural exchanges between the ...
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Hydrogeology Practitioner Spotlight--Wayne Hutchinson
Name: Wayne Hutchinson Office: Milwaukee Practice Area: Environmental Liability Management Area of expertise: Hydrogeology About Me in 140 Characters (or more!): I suppose I was drawn to a career in science, and specifically hydrogeology, because it allows me to use and apply mathematics, chemistry and physics to solve three-dimensional puzzles. And, as it turns out, it was also the perfect ...
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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 spectroscopic ...
By B&W Tek
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Why we need to recycle plastic
In a recent article for Forbes, Trevor Nace, geologist, adventurer, and founder of Science Trends, expressed his concern about not recycling plastic. Worldwide people buy a million plastic bottles per minute and the 91% of them end up in the garbage. The consequences for our land, water, and wildlife are disastrous. Throwing away plastic bottles, instead of recycling them, means that most ...
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