Crosshole seismic investigations at voisey s bay, canada. The voisey s bay nickelcoppercobalt deposit provides a unique opportunity to test the latest minimumstructure gravity inversion program developed by the university of british columbiageophysical inversion facility ubcgif. A plan view of the voisey s bay deposit can be seen in figure 3. This section contains free ebooks and guides on geophysics, some of the resources in this section can be viewed online and some of them can be downloaded. The exploration program was completed in october 2017 and comprised 1,469 metres of drilling in eight holes and accompanying borehole geophysics for five of the holes. Since 1995, numerous technical publications have described and interpreted the geology of the voiseys bay deposit, whilst others have assessed the many other. Equitas aims to solve mystery with geophysics near voiseys bay. Equitas aims to solve mystery with geophysics near voisey. Model for the voisey s bay deposit after naldrett et al. Theory and an example from voisey s bay, labrador, canada. Exvales principal geologist and chief geophysicist on the case to answer the multibilliondollarquestion can be read here as a pdf. Pdf the voiseys bay nicuco sulfide deposit, labrador. Examples given by balch 2000 illustrate the ability of various electromagnetic systems to detect and identify the voiseys bay nisulfide. Pge exploration bill peters australian society of exploration geophysicists australian institute of geoscientists perth, october 18th2017 au this talk discusses.
Current local time in conception bay south, newfoundland. Voiseys bay extension property was staked in anticipation of a multifaceted and exciting exploration project for magmatic nickel sulphide deposits. About 650 construction jobs and 400 fulltime operations positions will be created at voisey s bay some through its main contractor, semhatch. The apparatus used at voiseys bay consists of a piezoelectric source based on the swept impact seismic technique sist park et al. The geology and geochemistry of the ashley and floodplain. Steve is an ontario registered geoscientist with 32 years experience in geophysics, specializing in the magnetic and electromagnetic methods, but also with experience in large exploration compilations. Occurrence model for magmatic sulfiderich nickelcopper. Voiseys bay mine is a nickel mine in labrador, canada, near the bay of the same name. Lets look at why geophysics works, what new technology we have, some ni. Johns based company, chipped samples from an iron stained rock outcrop. The property is situated in the northeastern part of.
Get conception bay souths weather and area codes, time zone and dst. Crosshole seismic investigations at voiseys bay, canada. Vertical slice of a threedimensional seismic reflection survey of the faroe. One of the richest nickelcoppercobalt finds in the world, the voisey s bay deposit was discovered in 1993, some 350 km north of happy valleygoose bay. While prospecting in eastern labrador in 1993, two newfoundlanders, albert chislett and chris verbiski of archean resources, a small st. Geophysical survey outlines strong conductors on south voisey. Introduction to geophysics lecture notes download book. Expected voisey s bay annual cobalt deliveries to cobalt 27 after voisey s bay mine expansion fully ramped up, based on vale management expectations. Significant infrastructure is required to support the mine and concentrator and to ensure a safe and comfortable living environment for the people that work at the site. In july 2015, vales board of directors sanctioned the development of the underground deposits at voiseys bay, launching the voiseys bay mine expansion.
A large nickel deposit was discovered in the hills along the western shore of potato island in september 1993 by archean inc. The mineral resources of the voisey s bay deposit are contained within three deposits. An em anomaly, as it is commonly termed, consists of measurements that indicate the presence. The south voisey s bay svb nickelcoppercobalt property is located in labrador, 80 km south of the operating voisey s bay nickel mine. Pdf the voiseys bay nicuco sulphide deposit is hosted in a 1. The voisey s bay project several factors contributed to the success of the voisey s bay project getting through a complex set of negotiations with a number of stakeholders. The cunico deposit at voiseys bay, labrador wat on earth. The utem vertical and north h field components over line. Ni 43101 technical report on voisey s bay west property, voisey s bay area, labrador 5 jal exploration inc.
The voisey s bay nickelcoppercobalt deposit provides a unique opportunity to test the latest minimumstructure gravity inversion program developed by the university of british columbia geophysical inversion facility ubcgif. It is probable that the immiscible sulphide liquid separated from the gabbroic magma as it was moving along a feeder dyke to its final location. Geology and petrology of the voiseys bay intrusion. In canada nickel sulphide deposits are typically found in clusters or belts often spanning 10s to 100s of kilometres. Analysis of the sulfide ores and associated host rocks from the voiseys bay nickelcoppercobalt deposit indicates that in the pyrrohotite. The company is an exploration stage mineral resource. Results presented here suggest that much of the neiic is composed.
Nicu sulphide deposits with examples from voiseys bay. The information contained herein, while obtained from sources which we believe are reliable, is not guaranteed as to its accuracy or completeness. After working at inco for six years in the sudbury basin and at voisey s bay. Cvrd inco, copper cliff, ontario, canada abstract as in the case of the geological models for ni cupge deposits, a wide variety of geophysical signatures of nicupge deposits can. Pdf crosshole tomography is emerging as the most common geophysical technique for mapping sulphide distribution between drillholes. However, the standard gaussnewton algorithms that are commonly used for the minimization procedure and that employ forward solvers based on analytic formulas require large memory storage for the formation and inversion of the involved matrices. Constrained inversion of gravity data over the ovoid and mini. The shallow mineralized zone at discovery hill was easily detected by horizontal loop em hlem and ground magnetic surveys and led to the discovery of the ovoid deposit and the eastern deeps. Job opportunities at vales voiseys bay mine expansion note. The success of generating geologically meaningful results depends on the inherent uncertainty and spatial properties of the raw gravity data set, and on the. In july 2015, vales board of directors sanctioned the development of the underground deposits at voisey s bay, launching the voisey s bay mine expansion. The 141 mmt voisey s bay nicuco deposit is located in labrador. The 141 mmt voiseys bay nicuco deposit is located in labrador.
This case history illustrates the 3d inversion of surface gravity data acquired over the ovoid ore body at the voiseys bay deposit in labrador, newfoundland, canada. Home business mining nickel our operations voiseys bay vales voiseys bay nickel mine and concentrator is transitioning from open pit to underground mining. The voiseys bay nicuco deposit is associated with two. The voisey s bay ovoid is an example that demonstrates the need for both fine and regional electrical structures.
Fundamentals and case histories nicu sulphide deposits with examples from voisey s bay stephen j. Robust estimation of the bandlimited inductivelimit. This book explains the following topics in geophysics. Job opportunities at vales voisey s bay mine expansion note. Current local time in canada newfoundland and labrador conception bay south. Summary the 33 ma voisey s bay intrusion was emplaced at a depth of 14 km and represents one of the earliest magmatic events recorded in the development of the nain plutonic suite. Metalliferous mining geophysics state of the art after a decade in the. Review of geophysical technology for nicupge deposits dmec.
Heat flow measurements in 4 deep drillholes near voisey bay, labrador, have yielded the lowest value ever reported in the canadian shield, 22 mw m. Final report on a multiple discipline geophysical survey tartan and hicks lake area, thunder bay on page 7 2. A multiplediscipline, geophysical, surveyprogramme with airborne survey components was completed on the shining tree property in the benneweis and champagne township area of ontario by voisey s bay geophysics ltd. An electronic journal of the earth sciences published by agu. The voisey s bay nicuco sulfide deposit is located in eastern labrador, and transects the 1. The voisey s bay ovoid was the object of many geophysical surveys including a test 30hz surface utem survey done in 1995.
Equitas resources, nickel exploration in labrador preface. The current state of the art in geophysical acquisition, power. Cu deposits, and targeting for new discoveries geophysics for magmatic nicupge exploration bill peters the nova. Gravimetry, newtons law of gravitation, gravity effect of selected bodies, magnetometry, magnetism of rocks and minerals, magnetic measurements for an archaeological prospection, geoelectrical methods, resistivities of. Geology of the voiseys bay intrusion 9 the voiseys bay intrusion can be divided into three parts. Results are presented as a model of the subsurface density contrast with respect to host rock. Geological and geophysical settings the voiseys bay intrusion belongs to the nain plutonic suite and transects the collisional boundary between the proterozoic churchill province to the west and the archean nain province to the east fig. Their story is an example of how most of nearsurface canadian mines. Forward modeling of gravity data using finitevolume and.
Mar 02, 2015 geophysical survey outlines strong conductors on south voisey s bay nickel project. Commander and fjordland announce results from drilling at. Canadian journal of earth sciences nrc research press. These include deposits in the voiseys bay area of labrador, the raglan cape smith belt of northern quebec, the thompson belt in northern manitoba and a number of deposits in the timmins area in the southern abitibi.
See below for a live map of ship positions in voiseys bay, schedules for vessels arriving port calls, the list of ships currently in port, a company register and a local weather forecast. Constrained inversion of gravity data over the ovoid and. Okak bay amt survey regional setting okak bay is a small inlet in the northern labrador coast 100 km north of the spectacular worldclass voisey s bay nickel deposit figure 1, and the area of interest lies within national topographic system nts 1. Leave your phone number if you would like us to call you. Voiseys bay, labrador, canada arcelormittal piling. Geochemistry, geophysics and terrain sciences section. Voisey s bay mine is a nickel mine in labrador, canada, near the bay of the same name. May 05, 2015 a crustal geophysics and geochemistry science center. May 01, 20 minimumstructure inversion is one of the most effective tools for the inversion of gravity data. On the emplacement of the voiseys bay intrusion labrador, canada article pdf available in geological society of america bulletin 1281.
Three subsequent drillholes encountered similar mineralization, and geophysical surveys indicated a large electromagnetic anomalyem anomaly nearby. The geology of the voiseys bay deposit still needs more exploration and interpretation. Integrated compilation and modelling of geophysics has never been done. Pdf on the emplacement of the voiseys bay intrusion. Practically unlimited additional funds became available after the initial drill results were published. Russel from the department of earth sciences, university of waterloo, ontaria, canada. Since voiseys bay is located in an area subject to land claims by both innu nation and the. The following is an excerpt from the february 2006 issue of the international mining magazine mentioning the potential of the garland lake area to host another voisey s bay style deposit. The geology and geochemistry of the ashley and floodplain troctolite intrusions, voisey s bay, labrador, canada luke maddigan, derek wilton, and greg dunning department of earth sciences, memorial university, st. Technical program expanded abstracts, international exposition and sixtyeighth annual meeting of the seg. The more details you give on your situation, the better we can help you. Pdf crosshole seismic investigations at voiseys bay, canada. The contrasting shapes of these subchambers may be a primary feature, or reflect slightly different erosion levels, as at voisey s bay.
Job opportunities at vales voiseys bay mine expansion. The following is a summary of the genesis and discovery of the voiseys bay deposit by alan v. Using stochastic crosshole seismic velocity tomography and. The voiseys bay nicuco sulfide deposit is located in eastern labrador, and transects the 1.
The nearsurface 20m depthtotop of the highlyconductive massive sulphide deposit requires a detailed conductivity grid. The port of voiseys bay is a very small port in canada. Seismic properties of the voiseys bay massive sulfide deposit. About 650 construction jobs and 400 fulltime operations positions will be created at voiseys bay some through its main contractor, semhatch. Review of geophysical technology for nicupge deposits king, a. The voiseys bay ovoid is an example that demonstrates the need for both fine and regional electrical structures. The source employed at voiseys bay produce sweeps of high voltage 6000 v pulses during 20 to 30 s. Free geophysics books download ebooks online textbooks. Crosshole seismic investigations at voisey s bay, canada enescu, n. This opportunity has expired or is an event which has already taken place. Home business mining nickel our operations voisey s bay vales voisey s bay nickel mine and concentrator is transitioning from open pit to underground mining. Port of voiseys bay, canada arrivals, schedule and. First year assessment report on the geology of the voisey s bay property licenses 018628m nts 14d01, nad 83, zone 20n.
Voisey s bay plate 1 will eventually be an important part of the provinces mining history. Comparison between the voisey s bay and sally malay deposits. Robust estimation of the bandlimited inductivelimit response from impulseresponse tem measurements taken during the transmitter switchoff and the transmitter offtime. Review of geophysical technology for nicupge deposits. Explore conception bay souths sunrise and sunset, moonrise and moonset. Voisey s bay, labrador, canada voisey s bay is situated in a remote area on the northeast coast of labrador, in the canadian arctic. Introduction a multiplediscipline, geophysical, surveyprogramme with airborne survey components was completed on the tartan lake and hicks lake area of ontario by voisey s bay geophysics ltd. Geophysical survey outlines strong conductors on south. Fundamentals and case histories nicu sulphide deposits with examples from voiseys bay stephen j. Voisey s bay is a lowcost, highmargin nickel mine, ranking in the lowest half of the nickel cost curve enhances growth profile and cash flow production to start accruing to wheaton starting in 2021, coincident with the anticipated ramp up in. Are there voiseys baytype nicuco sulphide deposits in the.
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