AndreaBozzo/ceres-open-data-index huggingface dataset:
Atlas of Late Triassic to Jurassic plutons in the Intermontane terranes of Yukon

This Atlas presents an extensive geoscience data set for the Late Triassic to Jurassic plutons that intrude the Intermontane terranes in Yukon. Plutons of this age are associated with significant porphyry Cu ± Au ± Mo deposits in British Columbia. In Yukon, Cu–Au–Ag deposits at Minto and Carmacks Copper are hosted by an Early Jurassic batholith but are not typical porphyry deposits. This project aims to provide the regional framework for Late Triassic to Jurassic plutons and associated mineral occurrences in southern Yukon. We systematically describe over 34 plutons and present new data for most of these, including 47 U-Pb zircon dates, 44 Ar-Ar dates, 187 whole-rock geochemical analyses, 30 whole-rock Sr and Nd isotope analyses, 27 feldspar Pb isotope analyses, zircon Hf isotope analyses for 22 samples and 26 pressure estimates from aluminum-in-hornblende analyses. Complementing these analytical data are extensive photomicrographs, photographs and maps.

Organization: Government of Yukon | Gouvernement du Yukon
Geology and genesis of the Mount Skukum Tertiary epithermal gold-silver vein deposit, southwestern Yukon Territory

A copy of this thesis is available at the EMR library – QE195 M321.
This thesis is available online at https://open.library.ubc.ca/cIRcle/collections/ubctheses/831/items/1.0302650.

Organization: Government of Yukon | Gouvernement du Yukon
Yukon Exploration and Geology 1981

This report contains three main sections: 1) introduction and overview of the Yukon Mineral industry; 2) technical reports by government and contributing geologists on the geology of Yukon mineral deposits and mineral districts under active investigation; and 3) descriptions of mineral properties and mineral claims staked in 1981 and summaries of assessment work undertaken by exploration companies to obtain assessment credits.

Organization: Government of Yukon | Gouvernement du Yukon
Placer deposit grain size and water quality sampling program

A program of placer deposit sediment and water sampling was initiated by Indian and Northern Affairs Canada (DIAND) in the summer of 1998 to investigate possible relationships between the grain size distribution of pay gravels and effluent levels at Yukon placer mines. The sedimentology of placer deposits may be characterized in one way by examining the grain size distribution of pay (gold-bearing) gravels. In addition, the amount of clay and silt in gold-bearing gravels has a direct bearing on the treatment necessary for gold liberation during the placer mining process, and the resulting use of water for this process. The program consisted of sampling the pay or sluiced portion of an actively mined placer deposit (bank material), in conjunction with instrument monitoring and sampling the water upstream and at the discharge point of the mine.

Knowledge of the grain size distribution of pay gravels will allow interpretation of the fluvial depositional environment, which can be used as a tool for placer deposit exploration. Sampling and analysis of the water will result in the ability to relate the grain size distribution of the active mine site (bank material) to the suspended solids concentration of the water, and the subsequent impact mining of the deposits has on the water quality in the area. This data will be important for the complete review of the Yukon Placer Authorization in 2001.

Organization: Government of Yukon | Gouvernement du Yukon
Residual total magnetic field, McQuesten Aeromagnetic Survey, NTS 115I/15, Yukon

A map of the residual total magnetic field derived from data acquired by Goldak Airborne Surveys during the period of November 19, 2008 to February 19, 2009. Data were recorded using a split-beam cesium vapour magnetometer mounted in the tail boom of a Piper Navajo aircraft.

Organization: Government of Yukon | Gouvernement du Yukon
The July 2007 rock and ice avalanches at Mount Steele, St. Elias Mountains, Yukon, Canada

A large rock and ice avalanche occurred on the north face of Mount Steele, southwest Yukon Territory, Canada, on July 24, 2007. In the days and weeks preceding the landslide, several smaller avalanches initiated from the same slope. The ice and rock debris traveled a maximum horizontal distance 5.76 km with a maximum vertical descent of 2,160 m, leaving a deposit 3.66 km2 in area on Steele Glacier. The seismic magnitude estimated from long-period surface waves (M s) is 5.2. Modeling of the waveforms suggests an estimated duration of approximately 100 s and an average velocity of between 35 and 65 m/s. This landslide is one of 18 large rock avalanches known to have occurred since 1899 on slopes adjacent to glaciers in western Canada. We describe the setting, reconstruct the event chronology and present a preliminary characterization of the Mount Steele ice and rock avalanches based on field reconnaissance, analysis of seismic records and an airborne LiDAR survey. We also present the results of a successful dynamic simulation for the July 24 event.

Organization: Government of Yukon | Gouvernement du Yukon
Sedimentology of placer gravels near Mt. Nansen, central Yukon Territory

Unconsolidated sediments in the Mount Nansen area can be subdivided into eight clastic facies: 1) clay-rich diamicton; 2) massive/stratified silt/clay; 3) massive/disorganized pebbly sand/sand; 4) stratified pebbly sand/sand; 5) disorganized muddy gravel; 6) massive/stratified sandy gravel; 7) disorganized gravel; and 8) massive to crudely stratified gravel. Diamicton is interpreted as glacial till; other facies are fluvial/glaciofiuvial in origin. Sediments have a number of geomorphic settings, including Holocene colluvium, alluvial fans and stream deposits; Reid periglacial alluvial fans; and pre-Reid glacial and glaciofluvial deposits. Previous workers suggested that significant placer gold concentrations occur only in alluvium that lies either upon bedrock or glacial till. New data from this study suggests that significant amounts of placer gold also occur in the diamicton, primarily at the diamicton/bedrock contact. Gold concentration in the diamicton is likely due to glacial erosion and incorporation of a supergene-enriched bedrock mantle and pre-existing auriferous alluvium.

A copy of this thesis is available at the EMR library – QE571 L42.
This thesis is available online at http://hdl.handle.net/1880/30694 - embargoed.

Organization: Government of Yukon | Gouvernement du Yukon
First vertical derivative of the magnetic field, McQuesten Aeromagnetic Survey, NTS 115P/3 and 115P/4, Yukon

Map of the first vertical derivative of the magnetic field derived from data acquired during an aeromagnetic survey carried out by Goldak Airborne Surveys from November 19, 2008 to February 19, 2009. The data were recorded using a split-beam cesium vapour magnetometer mounted in the tail boom of a Piper Navajo aircraft.

Organization: Government of Yukon | Gouvernement du Yukon
Geology and alteration signature of a Middle Proterozoic Bear River dyke in the Slats Creek map area, Wernecke Mountains, Yukon (106D/16)

The Middle Proterozoic Bear River dykes (ca.1.27 Ga) are mafic intrusions that crosscut the Gillespie Lake Group of the Wernecke Supergroup in the Slats Creek and Fairchild Lake map areas (106 D/16, 106 C/13). The dykes are fine-to medium-grained gabbros and basalts with tholeiitic affinities.The most northwesterly dyke was examined in detail. It was emplaced into mainly dolostone, and crosscuts an older fault. A white-weathering aureole along the margins of the dyke consists of calcite-magnetite-serpentine skarn. Within the dyke, hydrothermal effects are dominated by Fe (hematite and magnetite), with local enrichments of Cu (chalcopyrite) and U, a signature characteristic of earlier-formed zones of Wernecke Breccia (1.6 Ga). Alteration of the dyke indicates that a later pulse of hydrothermal fluids was channelled along the dyke or the fault.The Bear River dykes may belong to the coeval, giant radiating Mackenzie dyke swarm of the northern Canadian Shield.

Organization: Government of Yukon | Gouvernement du Yukon
Yukon Community Libraries Facilities Review

The Yukon Government is in the process of evaluating the needs of its 14 community libraries. This Facilities Review will assess the libraries across various measures, looking at community demographics, operations and staffing, public accommodation, collection, and space provisions.
The review will provide the client and others, short and long-term recommendations based on the needs expressed by the libraries as well as general trends in library services.
It will also provide the client and others with a reference manual that can be used to assist in the development of design as well as administrative and organization policies and new services and operational procedures.
This review will additionally provide project approval and funding authorities with a business case, identifying capital and operational costs and include an implementation plan providing a schedule of capital improvements and/or new construction.

Organization: Government of Yukon | Gouvernement du Yukon
2002–03 Supplementary estimates no. 1

Supplementary estimates no. 1 for the Government of Yukon 2002–03 Budget. 
This document was prepared by the Department of Finance under the direction of Management Board for the 1st Session of the 31st Legislature, Yukon Legislative Assembly. February 2003, Whitehorse, Yukon.

Organization: Government of Yukon | Gouvernement du Yukon
A preliminary assessment of low pressure, amphibolite-facies metamorphism in the upper Hyland River area (NTS 105H), southeast Yukon

The regional metamorphic grade in southeast Yukon is low, but amphibolite-facies metamorphism has affected regions adjacent to numerous mid-Cretaceous intrusions. In the upper Hyland River area, contact aureoles approximately 300 m wide are developed around the Hyland and Boundary plutons, which are members of the 97-94 Ma Tungsten plutonic suite. Andalusite + cordierite + biotite-bearing assemblages in the aureole of the Hyland pluton imply emplacement at ~2.5-3 kbar, equivalent to a depth of 9 to 11 km. Cordierite + biotite assemblages in the aureole of the adjacent Boundary pluton suggest emplacement at shallower levels (<~2.5 kbar or <9 km). Metamorphism associated with these intrusions took place after most regional deformation. In contrast, rocks adjacent to the older (ca. 106 Ma) Mount Billings batholith were metamorphosed syn-kinematically. Staurolite ± andalusite ± sillimanite-bearing assemblages in metapelites east of the Mount Billings batholith indicate metamorphism at deeper levels (~4 kbar, or 15 km depth), coincident with the formation of structures oblique to the regional trend.

Organization: Government of Yukon | Gouvernement du Yukon
Yukon placer mining 2022 development and exploration overview

Placer mining in the Yukon remains a strong and innovative industry, and has the potential for a modern record-high reporting this season. The number of active operations is similar to previous years and 147 of them reported sluicing activity. Of the active operations, 72% are in the Dawson area, 20% are in central Yukon (South McQuesten, Mayo, Keno, Canadian, Big and Nansen) and 8% are in southern Yukon (Kluane, Livingstone, Whitehorse South, Nisutlin). For the sixth consecutive year, reported placer gold production exceeds 70,000 crude ounces. Crude ounces represent an unrefined measure. Placer gold can contain inclusions of quartz or other matrix material or impurities such as silver and copper. These impurities, on average, account for 20% of the mass.

Organization: Government of Yukon | Gouvernement du Yukon
Surficial Geology of Pelly Crossing (part of NTS 115I/15) Yukon (1:20 000-scale)

Local-scale surficial geology mapping was completed as part of a community hazards mapping program coordinated by the Northern Climate ExChange (Yukon Research Centre, Yukon College). This program assesses potential landscape hazards under changing future conditions by incorporating a variety of data sets, including surficial geology, topography (slope and aspect), permafrost distribution, site-specific permafrost data (e.g. ground penetrating radar, electrical resistivity tomography and borehole data), analyses of past hydrological and climatological trends, and future climate projections. The surficial geology map describes surface landscape features, sediment texture, genetic material, surface expression and geomorphological processes. Detailed descriptions of local surficial geology and hazard analysis methodology are presented in the accompanying report. The accompanying landscape hazard classification map identifies existing and potential geological hazards such as landslides, permafrost stability and flooding; the hazard map is presented in stoplight colours to provide an intuitive tool for community decision makers aiming to incorporate an adaptation planning framework into existing land use management practices.

Organization: Government of Yukon | Gouvernement du Yukon
Yukon Geoscience - Looking to the Next Millennium

Four years after the first Yukon Geoscience Planning Workshop (the Marsh Lake Workshop, Yukon Geoscience - A Blueprint for the Future, Yukon Geology Program, March, 1995), forty-two representatives of industry, academia, and government met at the High Country Inn in Whitehorse to re-examine the state of Yukon geoscience. Over two days, with the expert facilitation of Steve Morison, Gartner Lee Ltd., the participants reviewed the first plan, the work that was done since 1995, and produced a new set of priorities to guide Yukon geoscience into the next millenium. The 1999 Yukon Geoscience Planning Workshop had a format similar to the 1995 workshop and many of the original participants were able to attend. This continuity greatly added to the quality and credibility of the input.


Organization: Government of Yukon | Gouvernement du Yukon
Yukon Mining, Development & Exploration Overview 2005

This volumes contains overviews on Yukon Mining, Development and Exploration, Placer Mining, Mining Incentives Program, and activities of the Yukon Geological Survey.

Exploration expenditures in Yukon have continued their dramatic rise for the third consecutive year, with an estimated $53 million spent exploring for a wide range of commodities. The majority of expenditures were on advanced stage projects.

Organization: Government of Yukon | Gouvernement du Yukon
General Administration Manual (GAM): Volume 3

The General Administration Manual policies serve as Government of Yukon corporate policies, and apply to all departments.

Published by [Public Service Commission][].
[Public Service Commission]: https://yukon.ca/en/public-service-commission

##See also:
* [Financial Administration Manual](/information/financial-administration-manual "Financial Administration Manual")
* [General Administration Manual Volume 1](/information/general-administration-manual-gam-volume-1 "General Administration Manual Volume 1")
* [General Administration Manual Volume 2](/information/general-administration-manual-volume-2 "General Administration Manual Volume 2")

Organization: Government of Yukon | Gouvernement du Yukon
Digital compilation of bedrock geology and till geochemistry

Contains all the digital data files that were assembled or created during the Finlayson Lake TGI project. It includes two MS Access databases of field observations (bedrock and surficial), scanned and digitized maps, a series of georeferenced images (geophysical and LandSat), and a collection of reports from the Yukon Exploration and Geology (YEG) series.

The data are presented in formats that can be viewed using four software products. Adobe Acrobat Reader 5 and ESRI ArcExplorer 2 are provided. Microsoft Internet Explorer is required to view the interface screens (Netscape may not work properly). A runtime version of Microsoft Access is also included to view the field databases if the user does not already have Microsoft Access installed on their computer. These four software products, or equivalent licensed versions, must be installed to utilize the full interactive capability.

The spatial data can also be manually opened or imported.

Organization: Government of Yukon | Gouvernement du Yukon
Thermal studies related to surging glaciers

Deep-ice temperature measurements have been made in two surge-type glaciers in the Yukon Territory, Canada. Cold ice warming towards the bed was found in Trapridge Glacier and a model of basal ice temperatures predicts large regions of basal temperate ice. Thermal regulation of the surge behavior of this small glacier is inferred; theoretical considerations show that this hypothesis can reasonably be extended to large surging glaciers as well. Temperatures below 0°C were also recorded on Steele Glacier. An anomalously warm layer was detected at a depth of approximately 50 m. This is attributed to the severe crevassing associated with a glacier surge. Numerical modelling of the effects of water-filled crevasses in a cold glacier, refreezing and injecting latent heat into the ice, predicts temperature profiles very similar to that observed. The model further predicts long term maintenance of the resulting trapped water pockets and, in small surging glaciers, a thermal memory of the initial crevassing throughout the entire quiescent phase.

Organization: Government of Yukon | Gouvernement du Yukon
Processes and rates of development of talus slopes and protalus rock glaciers in the Ogilvie and Wernecke Mountains, Yukon Territory

A copy of this thesis is available at the EMR library – GB581.15.Y8 G72.
This thesis is available online at https://central.bac-lac.gc.ca/.item?id=TC-QMM-67745&op=pdf&app=Library&oclc_number=895199473.

Organization: Government of Yukon | Gouvernement du Yukon
New mineral potential mapping methodology for Yukon: Case studies from the Beaver River and Dawson regional land use planning areas.

Territory-wide mineral potential mapping in Yukon was last conducted 18 years ago. An updated suite of maps for land use planning is, therefore, necessary. The YGS has developed a new GIS-based mapping process for this purpose. Industry-based applications using the new method will be developed going forward.

The approach makes use of mineral system components that potentially contribute to metal accumulations in an area. The method is a hybrid between a classic data-driven probabilistic approach and an expert-driven fuzzy logic approach. It is non-specific in terms of commodity and/or deposit type – however, the claim and assessment report footprint data that are integral to the mapping process capture these important components.

The procedure makes use of block modeling techniques where each block is assigned a prospectivity and (bedrock mapping) confidence score. Calculations are based on the presence or absence of categorical features within unit cells, and the scores represent the posterior favourability of each cell. Evidential layers are weighted according to buffer distance and/or through the application of knowledge-based factors. Lithology classes are factored using a multiclass weights-of-evidence approach.

Mineral potential and confidence scores are converted to either a 1, 2 or 3 according to a defined mathematical schema. The values are then combined – blocks with scores of 1:1 have the lowest mineral potential/lowest confidence whereas blocks with scores of 3:3 have the highest mineral potential/highest confidence. Nine possible combinations exist. Mineral potential maps containing measures of both potential and confidence are generated based on the cumulative contrast values.

Areas cut by major structures along which significant displacement has occurred need to be evaluated separately, and then stitched back together at the end of the assessment process. Concurrently, the mineral potential data need to be leveled to account for prospectivity differences across the structure concerned.

Organization: Government of Yukon | Gouvernement du Yukon
Thermal drilling and deep ice-temperature measurements on the Fox glacier, Yukon

During the summer of 1969 a thermal drilling and deep ice-temperature measurement program was carried out on the Fox Glacier, Yukon Territory. The thermal drilling resulted in seven instrumented holes at six locations on the glacier, three reaching bedrock. Temperature measurements indicated that the glacier was below the pressure-melting point throughout and that memory of a disturbed thermal regime existed. Estimates of geothermal heat flow were determined and an anomalous value of 4.73 µcal/cm² sec obtained. Bottom temperature models were developed which indicate the possibility of basal melting.

Organization: Government of Yukon | Gouvernement du Yukon
Granite Pegmatites in the Canadian Cordillera, Yukon and Northwest Territories

In this report the authors describe the results of a research program on granitic pegamtites in Yukon and the western Northwest Territories. These unusual rocks are of scientific and economic interest for the following reasons:

1) Rare elements such as Ta, Nb, Li, Rb, Cs, Be, and Sn are commonly found in granitic pegmatites, and can occur in concentrations sufficiently high to warrrant mining operations (e.g. Bernic Lake, Manitoba). Tantalum and niobium are used in prostheses, capacitors, laser crystals, and piezoelectric instruments; lithium is medicinally important for the treatment of manic depression, is used in advanced technology batteries, and is a key ingredient of specialized glassware; and beryllium and tin are industrially important as components of alloys.

2) Granitic pegmatites host a diversity of rare mineral species, and are a globally important source of gemstones such as emerald, topaz, aquamarine and tourmaline. Pegmatites in western North America have known gemstone potential.

3) Granitic pegmatites reveal information about melting of rocks in the lower crust and are an important source of information regarding fractionation of felsic magma suites, especially extreme fractionation. The minerals from granitic pegmatites were among the first to be used in absolute (radiometric) dating; granitic pegmatites are of importance in relative and absolute dating of the late stages of tectonic events.

Organization: Government of Yukon | Gouvernement du Yukon
Geology and genesis of copper deposits and associated host rocks in and near the Quill Creek area, southwestern Yukon

The Kluane Ranges are underlain by a sequence of stratified rocks ranging in age from Permian to Triassic, cut by Cretaceous and Tertiary intrusions. Flow and pyroclastic rocks of Lower Permian Station Creek Formation were probably part of a volcanic arc environment. Argillaceous and tuffaceous rocks of the Transition Zone of Station Creek Formation and overlying sedimentary rocks of Lower Permian Hasen Creek Formation were deposited in a subaqueous environment, possibly a back-arc basin. Upper Triassic basalts of the Nikolai Greenstone are largely subaerial and were probably a product of rift volcanism. Prominent copper lode deposits in the Kluane Ranges include: (1) vein and disseminated types in Station Creek volcanic rocks; (2) nickel-copper associated with Kluane complexes; and (3) vein-type in the Nikolai Greenstone. A narrow, positive range of sulphur isotopic compositions for vein sulphides in Station Creek Formation contrast sharply with a large range for those in the Nikolai Greenstone. The former deposits resulted from only local mobilization of sulphur (and metals) during metamorphism in a closed system, whereas mineralization in the Nikolai Greenstone involved considerable variation in chemical parameters of ore fluids in an open system with more than one source of sulphur.

This thesis is available online at https://open.library.ubc.ca/cIRcle/collections/ubctheses/831/items/1.0052509. A copy of this thesis is available at the EMR library – QE195 C355 1981.

Organization: Government of Yukon | Gouvernement du Yukon