Mira Geoscience has held 4 days GOCAD training session in Toronto with support of MacDonald Mines and Energiser Resources.
The Gocad® Mining Suite is the most advanced, easy-to-use, and cost-effective 3D earth modelling system available to the mining, geotechnical, and environmental industries. It is an extension of Paradigm™ Gocad®, the earth modelling standard in the oil and gas industry.
SEG invites papers on the topic of “Hydrogeophysics — Electric and Electromagnetic Methods” for publication in the July-August 2010 special section or supplement of Geophysics.
“Hydrogeophysics is a rapidly evolving discipline of geophysical methods dedicated to revealing properties and monitoring processes in the vadose zone as well as in aquifers. The discipline is relevant for environmental, hydrological, and agricultural research and engineering. Key processes in the application areas are contaminant transport, sustainability of ecosystems and biodiversity, plant growth, and soil-atmosphere interactions. Groundwater is the key component in the subsurface pore volume, for which reason electric and electromagnetic methods are most suitable for addressing the problems related to shallow subsurface spatial and temporal variability, its inaccessibility, which hinders the observation of relevant processes, and its role in connecting atmosphere, surface, and groundwater/reservoirs.
For this topic, Geophysics invites papers describing the theory, application, and benefits of advanced methods of hydrogeophysics. The application scale may range from the pore scale to the field scale involving more than 1 hectare of surface area. In particular we welcome techniques that exploit the evolution of new passive and active electric and electromagnetic acquisition strategies and advanced data processing and inversion schemes that show an increase in computational speed. Finally, we also encourage papers that highlight case studies and thereby emphasize the practical aspects and illustrate the potential pitfalls, problems, and limitations of the applied techniques.”
Fortress Minerals Corp. announces assay results on an additional eight holes from the phase 1 drilling program at its 74-square kilometre Malmyzh license in eastern Russia.
At the Central prospect, Hole AMM-012 intercepted 444.7 metres grading 0.36% copper from 3.8 metres to the bottom of the hole. The Central prospect is constrained only to the northeast by Hole FMCX-2, which intercepted 215 metres grading 0.34% copper. Drill results from the Central prospect show strong westward-increasing vectors in copper grade, increasing gold to copper ratios, and overall increasing grade-thickness along a coincident magnetic anomaly. The western extension of this anomaly will be tested during the second round of drilling.
Ground magnetic map is here: http://www.fortressminerals.com/i/pdf/Malmyzh_Drill_Results.pdf
The phase 1 drill program, which will include approximately 5,200 metres of drilling in 26 holes, will test ten large geophysical and geochemical targets. Determination of hole locations for the first-pass drilling program was based almost exclusively on soil geochemistry and magnetic anomalies due to the extensive soil and vegetative cover that characterizes the Malmyzh license. The phase 2 drill program, which is scheduled to commence in November 2010, will concentrate on delineation drilling of higher-priority mineralized targets identified in phase 1 and focused drilling in the priority prospects to identify higher-grade copper-gold feeder zones.
Malmyzh:
The Malmyzh Copper-Gold Project is located 215 kilometres northeast of the City of Khabarovsk near well developed infrastructure, including high voltage power lines, the Amur River (a major shipping route in the Russian Far East) and all season roads that connect the project to the regional capital of Khabarovsk City and the seaport City of Nikolaevsk at the northern end of the Sea of Japan. The Malmyzh prospect is held under a 20-year Exploration and Mining License.
Codevintec was on the receiving end of numerous hours of training regarding 3D technology and Marine Seismology including the GeoEel (digital towed hydrophone streamers) and MicroEel (analog seismic solid streamer). Bart Hoekstra, 3D Product Manager conducted the training.
Source: http://www.geometrics.com/blog/2010/03/italy-embraces-3d-and-marine-seismic-technology
Silver Swan (Australia) commenced its 2010 drilling program. The drilling will be focused on further exploring target zones in the Quinns and Yagahong project areas. Subordinate drilling is also planned for the remaining three project areas in the Company’s current portfolio of assets. The drilling program is expected to be executed in staggered phases across projects to allow time for the cumulative assessment of results.
On 12 March 2010, Fugro formally took delivery of a new-build survey vessel, the M/V Fugro Searcher which it commissioned in 2007. Fugro took the opportunity to look at all aspects of overall survey vessel design in detail and install the latest equipment, making it the most advanced vessel of its type in the world. The vessel will operate in the offshore oil and gas industry and the offshore renewable energy sector. It will be able to carry out the full range of site and route survey tasks to obtain the high resolution data necessary for safe, efficient and cost-effective planning, design and engineering activities involving the seabed and the installation of pipelines, platforms, wind turbines, subsea structures and other seabed furniture. The new vessel will have permanently mobilised geophysical and hydrographic survey spreads. Geotechnical equipment will be installed on a project by project basis. The Fugro Searcher represents initial steps in a global vessel replacement schedule with the objective of removing older tonnage from the fleet and clearly differentiating Fugro’s Offshore Survey Division from other providers. On 19 March 2010, Fugro formally took delivery of a new-build seismic survey vessel, the M/V Geo Caspian, which is on long term charter from ship-owner Volstad Maritime AS.
The vessel was outfitted at Fosen Yards in Norway and is one of the largest and most advanced seismic vessels ever built. Caspian is the third C-class vessel in a series of four delivered to Fugro since 2007. Geo Caspian is designed to work worldwide in the most challenging offshore areas, and is capable of towing 16 seismic streamers. The C-class vessel design allow deployment of the largest possible spread of seismic streamers which are considered essential for efficiency when performing geophysical exploration on large prospects in the ”high end” market segment. The next C-class vessel, the M/V Geo Coral will be delivered to Fugro in August 2010.
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The first airborne geophysical survey of the historically prolific Gjegjan District in Albania has identified multiple exploration targets, never before drilled.
Initial data processing from the recently flown airborne geophysical survey has identified several geophysical anomalies that are previously undrilled. Of particular interest is a new target called Perbreg. The Perbreg geophysical anomaly is located on strike and approximately 2km south of the Gjegjan mine, which operated between 1961 and 1993, and estimated production 4,420,000 tons of 3.3% Cu (source: Albanian Geological Survey). The newly identified Perbreg anomaly is under a very thin limestone cover that hid the volcanic sequence from past state run exploration programs. The Perbreg anomaly is coincident with a significant geochemical anomaly that was identified in 1985 but was never drilled and never explained.
Several other anomalies within a 10km radius of the former mine have been identified as high priority exploration targets. Based on the airborne geophysical data, technical crews are now mobilizing onsite to follow up in these target areas with ground work including Max/Min electromagnetic ground geophysics, induced polarization ground geophysics, detailed soil sampling and geological mapping. This initial fieldwork is being done to develop multiple initial drill targets in the northern block of the property, in close proximity to the historic mine.
Data interpretation from the airborne survey flown on the southern portion of the district is expected within two weeks. The airborne survey was approximately 1200 line kilometers in two survey grids. Line spacing was 125m on the north grid and 200m on the south grid. Geotech Airborne Ltd. completed the survey, which was a combined high-resolution helicopter borne magnetic and electromagnetic survey, utilizing their Versatile Time Domain Electro Magnetic System (“VTEM“).
John LaGourgue, Volcanic’s President and Chief Operating Officer states, “These positive results are indicative of what can be accomplished as Volcanic conducts the first ever large scale and modern exploration of the Gjegjan District. While the district is home to significant past production, Volcanic is using modern exploration tools and techniques in the district to fully explore the potential of this 200 square kilometer property.”
(Marketwire – March 24, 2010) – Universal Wing Technologies Inc. announces the commencement of its first commercial survey contract of 2010. Field engineers are currently undertaking a magnetometer-based mission for a third party client using the company’s Sky Dart system.
The Sky Dart is a versatile helicopter-towed bird system developed by the payload specialists at Universal Wing Geophysics. Unlike many competitor systems – which are dependant on their parent helicopter – Sky Dart is self-contained, self-powered, and is easily installed. Once pilot navigational aids are installed into the helicopter (a simple and quick operation), the system is ready to go to work.
Sky Dart has been designed to reduce survey mobilization costs to an absolute minumum, and to provide maximum flexibility in operation with no compromise of data quality. Field-ready when it arrives on site, the system benefits from Universal’s years of experience designing payloads for its unmanned aerial vehicle (UAV) fleet.
Declan Sweeney, CEO of Universal, said, “We’re very pleased to engage in our first revenue-generating assignment since the company began trading as Universal Wing Technologies Inc. in December 2009. Sky-Dart and our UAV camera system are already commercially viable systems. Later this summer we will also introduce a horizontal magnetometer system deployed on board our Venturer UAV.”
15-20 August 2010
Snowbird, Utah
This five-day meeting in Utah will include proposed topics such as:
The SEG dictionary (Sheriff, 1991), spake thus:
1. A deviation from uniformity in physical properties; a perturbation from a normal, uniform, or predictable field.
2. Observed minus theoretical value.
3. A portion of a geophysical survey, such as magnetic or gravitational, which is different in appearance from the survey in general.
4. A gravity measurement which differs from the value predicted by some model, for example, a Bouguer or free-air anomaly (q.v.).
5. In seismic usage, generally synonymous with structure. Occasionally used for unexplained seismic events.
6. Especially, a deviation which is of exploration interest; a feature which may be associated with petroleum accumulation or mineral deposit.
7. An induced polarization anomaly is usually positive and greater than background (or the normal effect) to be economically interesting. In the frequency domain an anomalous region has a resistivity which decreases with frequency. An interesting re s i s t i v i t y anomaly is generally smaller than background.
Well, fine. These specific points are useful, as far as they go. But what do they add up to? Item 2 only seems to mathematize item 4, but 4 is unaccountably restricted only to gravity surveys. And is an anomaly source generally a structure (item 5)? Is a geophysical anomaly the same as the geologic feature which is its source (items 1 and 5), or are these phenomena of different categories? Are only those anomalies deemed of exploration interest worthy of the title (item 6)? Why different anomaly definitions for different survey types?…”
Henry Lyatsky about it: http://www.cseg.ca/publications/recorder/2004/06jun/06jun-meaning-of-anomaly.pdf
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