AndreaBozzo/ceres-open-data-index huggingface dataset:
Reprocessing of Yukon magnetic data for NTS 115B

Aurora Geosciences Ltd was contracted to perform a review of publicly available digital magnetic geophysical data submitted with assessment reports to develop standardized products and compilations. Data submitted prior to March 2015 were considered.

Individual assessment report data were levelled and integrated with 1:250 000 compilations.

Four gridded PDFs have been produced (residual total magnetic field, reduced to pole, vertical derivative and tilt derivative). Original 250k geophysical data can be found in YGS Open File 2017-33.

Organization: Government of Yukon | Gouvernement du Yukon
First Vertical Derivative of the Magnetic Field, Aeromagnetic Survey of the Wolf Lake Area, Yukon, Part of NTS 105C (north half)

This aeromagnetic survey was carried out by Novatem Inc. from February 23, 2019 to April 2, 2019. The data were recorded using split-beam cesium vapour magnetometers mounted in the tail booms of two Piper Navajo aircraft. The nominal traverse and control line spacings were 400 m and 2400 m, and the aircraft flew at a nominal terrain clearance of 150 m. Traverse lines were oriented N45°E with orthogonal control lines.

Organization: Government of Yukon | Gouvernement du Yukon
Reprocessing of Yukon magnetic data for NTS 116G

Reprocessing of magnetic data for Yukon was performed between November 2016 and March 2017. Aeromagnetic data were compiled, data of different resolutions were merged, and a series of images individually levelled for each map sheet were produced. For each 250k-scale map, the following magnetic derivative maps were produced: 1. Residual Total Magnetic Field; 2. Reduced-to-Pole Magnetic Field (RTP); 3. First Vertical Derivative of the Reduced-to-Pole Magnetic Field (RTP_VD); and 4. Tilt Derivative of the Reduced-to-Pole Magnetic Field (RTP_TDR). These maps are provided as pdfs, geotiffs and Geosoft grid files. Colour ramps/legends are provided for each map.

Organization: Government of Yukon | Gouvernement du Yukon
Reprocessing of Yukon magnetic data for NTS 105M

Aurora Geosciences Ltd was contracted to perform a review of publicly available digital magnetic geophysical data submitted with assessment reports to develop standardized products and compilations. Data submitted prior to March 2015 were considered.

Individual assessment report data were levelled and integrated with 1:250 000 compilations.

Four gridded PDFs have been produced (residual total magnetic field, reduced to pole, vertical derivative and tilt derivative). Original 250k geophysical data can be found in YGS Open File 2017-21.

Organization: Government of Yukon | Gouvernement du Yukon
Potential radiogenic heat production from granitoid plutons in Yukon

This map presents results for calculations of the potential for granitoid plutons to produce radiogenic heat. The calculations are performed using U, Th, and K concentrations from whole rock geochemical data compiled from various sources in the Yukon Geological Survey lithogeochemical database. The objective of this exercise was to identify plutons with anomalously high potential for radiogenic heat production to use as a targeting tool for geothermal resource exploration.

Organization: Government of Yukon | Gouvernement du Yukon
Enhanced interpretation of stream sediment geochemical data for NTS 115A

New geochemical data from re-analysis of archived stream sediment samples have been assessed using weighted sums modeling and catchment basin analysis as described in the methodology report that accompanies this map (YGS Open File 2015-10). Both commodity and pathfinder element abundances are evaluated to highlight areas that show geochemical responses consistent with a variety of base and precious-metal mineral deposit types. The results of modeling, completed using two approaches, are presented as a series of catchment maps and associated data files. This release is part of a regional assessment of stream sediment geochemistry that covers a large part of Yukon.

Organization: Government of Yukon | Gouvernement du Yukon
First vertical derivative of the magnetic field, Eagle Plains Aeromagnetic Survey, NTS 116 H (north half), Yukon

This map of the first vertical derivative of the magnetic field was derived from data acquired during an aeromagnetic survey carried out by EON Geosciences Inc. in the period between April 10, 2009 and September 16, 2009. The data were recorded using split-beam cesium vapour magnetometers (sensitivity = 0.005 nT) mounted in each of the tail booms of a Piper Navajo and a Cessna 206 aircraft. The nominal traverse and control line spacings were, respectively, 800 m and 2 400 m, and the aircraft flew at a nominal terrain clearance of 250 m. Traverse lines were oriented N90°E with orthogonal control lines. The flight path was recovered following post-flight differential corrections to the raw Global Positioning System data and inspection of ground images recorded by a vertically-mounted video camera. The survey was flown on a pre-determined flight surface to minimize differences in magnetic values at the intersections of control and traverse lines. These differences were computer-analysed to obtain a mutually levelled set of flight-line magnetic data. The levelled values were then interpolated to a 200 m grid. The International Geomagnetic Reference Field (IGRF) was not removed from the total magnetic field.

Organization: Government of Yukon | Gouvernement du Yukon
Reprocessing of Yukon magnetic data for NTS 105G

Reprocessing of magnetic data for Yukon was performed between November 2016 and March 2017. Aeromagnetic data were compiled, data of different resolutions were merged, and a series of images individually levelled for each map sheet were produced. For each 250k-scale map, the following magnetic derivative maps were produced: 1. Residual Total Magnetic Field; 2. Reduced-to-Pole Magnetic Field (RTP); 3. First Vertical Derivative of the Reduced-to-Pole Magnetic Field (RTP_VD); and 4. Tilt Derivative of the Reduced-to-Pole Magnetic Field (RTP_TDR). These maps are provided as pdfs, geotiffs and Geosoft grid files. Colour ramps/legends are provided for each map.

Organization: Government of Yukon | Gouvernement du Yukon
Reprocessing of Yukon magnetic data for NTS 115K

Reprocessing of magnetic data for Yukon was performed between November 2016 and March 2017. Aeromagnetic data were compiled, data of different resolutions were merged, and a series of images individually levelled for each map sheet were produced. For each 250k-scale map, the following magnetic derivative maps were produced: 1. Residual Total Magnetic Field; 2. Reduced-to-Pole Magnetic Field (RTP); 3. First Vertical Derivative of the Reduced-to-Pole Magnetic Field (RTP_VD); and 4. Tilt Derivative of the Reduced-to-Pole Magnetic Field (RTP_TDR). These maps are provided as pdfs, geotiffs and Geosoft grid files. Colour ramps/legends are provided for each map.

Organization: Government of Yukon | Gouvernement du Yukon
Reprocessing of Yukon magnetic data for NTS 105I

Aurora Geosciences Ltd was contracted to perform a review of publicly available digital magnetic geophysical data submitted with assessment reports to develop standardized products and compilations. Data submitted prior to March 2015 were considered.

Individual assessment report data were levelled and integrated with 1:250 000 compilations.

Four gridded PDFs have been produced (residual total magnetic field, reduced to pole, vertical derivative and tilt derivative). Original 250k geophysical data can be found in YGS Open File 2017-17.

Organization: Government of Yukon | Gouvernement du Yukon
Incidental catch at BC marine finfish aquaculture sites

Fisheries and Oceans Canada’s (DFO’s) Conditions of Licence for finfish aquaculture include requirements to minimize harm to wild fish that swim into facilities.  Facility operators must also maintain an incidental catch log, which is a record of wild fish caught at the facility during harvest and transfer events.  This information is submitted to DFO and public reports are posted quarterly. The tables provided list the reported incidental catch of dead wild finfish and the year and month in which they were captured from B.C. marine finfish facilities during harvest and transfer events. Data  are reported in the quarter in which the harvest activities ended and will not exist for farms that do not have fish on site or where no incidentally caught fish were recorded.

Organization: Fisheries and Oceans Canada | Pêches et Océans Canada
Results of industry benthic monitoring of British Columbia marine finfish aquaculture sites, 2011 and ongoing

Fisheries and Oceans Canada requires operators of active marine finfish aquaculture sites in British Columbia to monitor for benthic (seabed) impacts. The benthic monitoring program is designed to limit the location, area and intensity of impact created by fish farms to the seabed and to support sustainable aquaculture by maintaining healthy ecosystems.  
All operational sites must be monitored at peak production, when the greatest environmental impact is most likely to occur. If the thresholds outlined in Aquaculture Activities Regulations are exceeded, the site must be fallowed (left empty) until further monitoring shows the seabed has sufficiently recovered.

Fisheries and Oceans Canada assesses industry reports and video data for compliance and uses the data to better understand benthic impacts. See [Results of DFO benthic monitoring audits of BC marine finfish aquaculture sites](http://open.canada.ca/data/en/dataset/c1a54a0c-4eb0-4b50-be1f-01aee632527e "Results of DFO benthic monitoring audits of BC marine finfish aquaculture sites").

Related links:
 
+ Infographic: [Monitoring benthic impacts at BC aquaculture sites](https://www.dfo-mpo.gc.ca/about-notre-sujet/publications/infographics-infographies/benthic-benthique-eng.html)
+ Graph: [Benthic performance at marine finfish aquaculture sites in BC](http://www.pac.dfo-mpo.gc.ca/aquaculture/reporting-rapports/benth/index-eng.html)

Organization: Fisheries and Oceans Canada | Pêches et Océans Canada
Geological Framework of West Lake Map Area (NTS 105 N/9), Hess Mountains, East-Central Yukon

West Lake map area (105N/9) is underlain by three fault-bounded structural blocks containing tectonically thickened (Late Proterozoic to Mississippian) Selwyn Basin strata. Northeast of the West Lake Fault tightly folded Hyland Group is structurally overlain by Road River Group. Between the West Lake and Wilson Range faults Hyland Group is thrust over Earn Group. In this block the variety of rocks preserved beneath the sub-Earn Group unconformity is greater than surrounding areas. Southwest of the Wilson Range Fault is a tectonically thickened, homoclinal succession of Road River and Earn groups. Silver-bearing quartz veins above and below a thrust fault were mined at the Plata occurrence. Anomalously high Ag, Zn and Pb concentrations in stream sediments result from black shale of the Earn Group exposed in three belts across the map area.

Organization: Government of Yukon | Gouvernement du Yukon
Natural revegetation of placer mine tailings near Mayo, central Yukon

Placer mining occurs extensively in parts of the Yukon, denuding riparian zones and lining valley bottoms with mine tailings. Revegetation of tailings was examined at two placer mines near Mayo to determine the influence of environmental variables on the speed and direction of the natural process. Vegetation species density and frequency on various substrates were compared with: age, slope and aspect of the site, and pH, particle size distribution, moisture content and organic content of the soill. In central Yukon, tailings are first colonized by ruderal (weedy pioneer) species such as fireweed and members of the Compositae (dandelion) family. These are replaced by willow-dominated communities after nine years. Willow communities support many species characteristic of the adjacent undistrubed black spruce forest, suggesting that the placer succession is similar to that of riverbank environments in interior Alaska. Revegetation of the tailings proceeds at the same rate for the first twelve years as does that following natural disturbance. Of the environmental factors examined, only age and slope were, statistically, associated with rate of revegetation. Both the percent cover and the number of species at a site were inversely associated with slope, suggesting that reduction of slope angle enhances vegetation regeneration.

Organization: Government of Yukon | Gouvernement du Yukon
Dan property, south Yukon

Massive black sphalerite occurs with pyrrhotite and magnetite in up to 3 irregular but roughly concordant layers at the contact between massive white marble and hard green and white-banded meta-tuff. The mineralization is believed to have replaced brecciated marble in the footwall of a south-dipping thrust fault which passes through the DAN prospect and extends through the Crescent Lake area 5.8 km to the east.

Organization: Government of Yukon | Gouvernement du Yukon
Yukon Placer Mining Industry Report 2003 to 2006

Since the publication of the last industry report, Yukon has undergone significant change: mineral prices have increased dramatically, with a corresponding boom in economic activity, mineral exploration, mine development, housing prices and employment. In contrast with the hard-rock sector, however, the placer industry has only just begun to share in these prosperous times - fuel prices have remained high and major regulatory changes have occurred.

We hope that the research and information that the Yukon Geological Survey provides to the placer industry will encourage exploration and development of new placer mines in upcoming years.

Organization: Government of Yukon | Gouvernement du Yukon
Yukon Mineral Deposits Summary 2023

This publication is intended as a snapshot of the hard rock mineral resources of Yukon. It is up-to-date as of December 1, 2023.

The tables herein have been compiled from information derived from Yukon MINFILE – A database of mineral occurrences, and from various technical reports and information filed in SEDAR (system for electronic document analysis and retrieval).

This document does not include cut-off grades for resources and reserves. Numbers have been rounded for readability. Tonnages and grade are provided in metric measure – converted from imperial as required. Total contained metals are estimated as a result of tonnage multiplied by grade; reported values are converted to either metric or imperial as required. Amounts are for all deposits/zones on the property.

Deposit resources are identified as being compliant with either the minimum requirement for mineral resources and reserves as defined by the Canadian National Instrument for the standards of disclosure for mineral projects (NI 43-101), the Australasian code for reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC) standards or the disclosure requirements for the mining companies in the United States, in accordance to the Securities and Exchange Commission Industry Guide 7 (S-K 1300). Deposits that are not compliant with these definitions are identified as historical estimates. 

The Owner/optionee indicate the company owner as stated in the resource estimate or on the company website. In the case of historical resource calculations where there is no resource estimate or website available, the owner is the registered quartz claim holder.

The reader is encouraged to refer to the original reference for detailed information. We accept no responsibility for any errors or omissions.

Organization: Government of Yukon | Gouvernement du Yukon
2000–01 Supplementary estimates no. 2

Supplementary estimates no. 2 for the Government of Yukon 2000–01 Budget. 
This document was prepared by the Department of Finance under the direction of Management Board for the 2nd Session of the 30th Legislature, Yukon Legislative Assembly. October 2000, Whitehorse, Yukon.

Organization: Government of Yukon | Gouvernement du Yukon
Natural Attenuation of Aqueous Zinc in Shallow Soils over Permafrost Downslope of Galkeno 300 mine Adit, United Keno hill Mines, central yukon

This study investigated the natural attenuation of zinc in mine drainage at the Galkeno 300 mine site, located at the northern limit of the discontinuous permafrost zine in central Yukon Territory. The mine drainage contains ~150 mg/L Zn where it exits the mine; where these same waters enter the receiving environment of Christal Creek, the Zn concentrations have been reduced to ~2 mg/L. The research program examining this natural attenuation consisted of two phases. Phase 1 was comprised of a site investigation along with the collection of samples for chemical analyses and laboratory testing. Phase 2 consisted of laboratory characterisation and testing of samples collected during Phase 1.
The Phase 1 site investigation was carried out during summer 2000. A climate station was established to monitor precipitation and temperature during the study period. Site water balance was monitored through the erection of two weirs; input exceeded outputs by and averages of 16%, indicating a minor degree of dilution. Water samples collected at sites along the longitudinal mine drainage flowpath showed no temporal trends, but clearly outlined a dramatic decrease in Zn concentrations with distance from the adit. Soil samples of upper organic and lower mineral horizons were collected from within and immediately adjacent to the flowpath. Chemical analysis of aliquots of these samples clearly showed elevation of Zn concentrations in samples in contact with mine drainage; upper organic horizons samples in particular were found to contain highly anamalous Zn levels.
The Phase 2 laboratory investigation subjected the collected samples to physical and chemical characterisation, as well as batch adsorption testing and column leaching with synthetic and natural mine drainage. Batch adsorption tests showed the organic soils to have the highest Zn attenuation capacity; in particular, organic soils from the midpoint of the site (site C) were found to have the highest adsorptivity. Similar results were obtained in the column leaching and desorption test; organic samples from site C had both the highest Zn attenuation capacity and and the greatest degree of Zn retention under increasingly aggressive desorbing conditions. 
Selective extractions of the collected soils showed that the oxide fraction was the repository for much of the soil zinc. In the organic sils in particular, the oxide fraction dominates the geochemical fractionation of Zn in Galkeno 300 soils. High concentrations of Mn are removed form the mine drainage simultaneously with Zn; the coprecipitation of Mn-Zn oxides appears to be the dominant process of natural attenuation of Zn at the Galkeno 300 site.

Organization: Government of Yukon | Gouvernement du Yukon
Assessment of the thermo-hydraulic properties of rock samples near Takhini Hot Springs and in the Tintina fault zone, Yukon

As part of an emerging program to understand ground temperature and geothermal heat potential in Yukon, the Yukon Geological Survey drilled two temperature gradient wells in south-central Yukon: one near the Takhini Hot Springs in 2017, and a second in the Tintina Trench in 2018. This study presents the thermo-hydraulic properties of drill core from these wells and from selected outcrops, to evaluate heat transfer mechanisms in the subsurface and provide a heat flow model to characterize the geothermal potential of these regions. Thermo-hydraulic properties of the rocks in the Takhini well have a moderate thermal conductivity and a low matrix hydraulic conductivity for consolidated rocks, corresponding to a linear geothermal gradient in the upper part of the well. The rocks in the Tintina well have low thermal conductivity and hydraulic conductivity. The linear geothermal gradient indicates conductive heat transfer even though the rocks are permeable. The proximity of the well to a mountain range suggests a shallow groundwater path in the Tintina well area, with no evidence of surface hot springs.
The location of steep faults appears to be a key pathway for deep groundwater to seep to surface and can explain the geothermal context near the Takhini well. Such a framework is a typical geothermal play type in orogenic belts. Although the Tintina well is found in a similar setting, this study does not identify potential for deep forced convective groundwater flow movements because hydraulic head difference along the faults may not be enough for the deep groundwater to rise since the faults are expected to be subvertical. This research, therefore, helps to characterize the subsurface and provides critical information needed for a successful exploration of geothermal energy resources.

Organization: Government of Yukon | Gouvernement du Yukon
Report on the Detailed Mineral Assessment of the Proposed Pickhandle Lakes Special Management Area, Yukon

The proposed Pickhandle Lakes Special Management Area (SMA) consists of 50.2 square kilometers in southwestern Yukon on NTS map sheet 115F/16. The Yukon and Canadian governments and Kluane and White River First Nations agreed to create a SMA, to be designated as a Habitat Protection Area, which covers Pickhandle Lake and the surrounding wetlands. The Habit Protection Area designation does not require the withdrawal of the area from mineral staking and withdrawal has not been requested in the Memorandum of Understanding signed between the Governments of Canada, Yukon and the First Nations. The purpose of this report is to present the results of the detailed mineral assessment of an approximately 281.7 km2 area that encompassed the proposed Special Management Area. This enlarged area was included to provide some relative context for the assessment. The proposed SMA area has no known mineral occurrences and fieldwork conducted during 2002 did not identify any mineral resources. As the proposed SMA is a wetland in the overburden covered Shakwak Trench no rock exposures were found within the SMA in 2002 and conventional soil and stream sediment sampling were determined to be ineffective. The detailed mineral assessment is based on the mineral potential of the geology as identified by a panel of industry experts. The resulting detailed mineral potential map indicates that the belt of Wrangellia Terrane rocks, on the southwest side of proposed SMA, have the highest relative mineral potential. Due to insufficient information the detailed assessment panel did not establish any applicable potential mineral deposit models for the proposed SMA area. This resulted in the tract containing the proposed SMA having the lowest relative mineral potential. The assessment panel determined that the Wrangellia Terrane has potential for hosting gabbroic nickel-copper, volcanic massive sulfide volcanogenic type, gold-quartz vein and copper skarn deposits. The Nasina Assemblage rocks on the north east side of the SMA were considered to have potential for hosting gabbroic nickel - copper, volcanic massive sulfide Besshi/Cyprus and gold-quartz vein deposits. Field work in 2002 located outcrops with anomalous gold, arsenic and antimony values in quartz veins in the tract bounding the northeast side of the proposed SMA. No further evaluation work is recommended for the proposed SMA area at this time. It is recommended that land use planners take into account the relatively high mineral potential of the area surrounding the proposed SMA.

Organization: Government of Yukon | Gouvernement du Yukon