AndreaBozzo/ceres-open-data-index huggingface dataset:
Preliminary Geology of the Northeast Third of Grass Lakes Map Area (105G/7), Pelly Mountains, southeastern Yukon

The northeast corner of Grass Lakes map area is underlain by polydeformed metasedimentary, metavolcanic and metaplutonic rocks of Yukon-Tanana Terrane, and ultramafic rocks of unknown affinity. Layered metasedimentary and metavolcanic rocks, about half the area mapped, include a basal unit of quartz-rich schist, psammite, metapelitic schist, and grit with a laterally continuous sandy marble marker high in the unit; a unit made up of a variety of mafic metavolcanic (?) rock types interlayerd with carbonaceous phyllite, grey quartzite, quartzofeldspathic psammite and grit; Devono-Mississippian felsic metavolcanic (?) rocks interlayered with carbonaceous phyllite and grey quartzite, and an upper mafic metavolcanic (?) unit with quartzofeldspathic psammite and grit, and carbonaceous phyllite and quartzite. Metarhyolite of the third unit hosts the Kudz Ze Kayah massive sulphide deposit and underlies numerous gossans. The succession is thought to be upright based on an interpretation of the structure of metarhyolitic rocks at Kudz Ze Kayah.

The remainder of the area is underlain by metaplutonic rocks. Quartz-feldspar metaporphyry near Kudz Ze Kayah is thought to be a hypabyssal intrusion coeval with the adjacent metavolcanic pile. Coarse-grained granitic to monozonitic Grass Lakes Orthogneiss of probably Early Mississippian age underlies much of the area; it and its apophyses intrude the layered units. The undated North Lakes Metadiorite is thought to intrude the Grass Lakes Orthogneiss. Three large undated bodies and numerous discordant dykes of weakly foliated biotite-muscovite granite intrude the layered succession.

Ultramafic rocks occur in two settings in the eastern part of the area. Discontinuous 10 to 100 metre-scale bodies of ultra-mafic rock occur along the contact between actinolite-chlorite schist and calcareous quartzose psammite (above) near the Pack occurrence. A km-scale body of ultramafic rock also overlies the same calcareous quartzose psammite in the prominent peak along the east side of the map area. An axial surface trace of a recumbent north-closing fold lies between the two localities suggesting that the ultramafic rocks are folded.

All rocks except biotite-muscovite granite and ultramafic rocks are strongly foliated and lineated. The prominent foliation transposes an older foliation and bedding and is axial-planar to south-vergent folds mappable at 1:50 000 scale. This deformation occurred after the intrusion of the Grass Lakes Orthogneiss (therefore post-Mississippian) and waned during the emplacement of biotite-muscovite granite. Two weak later phases of deformation comprise sporadically developed north-trending, east-vergent folds of the second-phase foliation and regional arching of the second phase foliation over a southwest-trending hinge in the central part of the map area.

Organization: Government of Yukon | Gouvernement du Yukon
Preliminary investigation of the bedrock geology of the Livingstone Creek area (NTS 105E/8), south-central Yukon

The Livingstone Creek area is underlain by metasedimentary and metaigneous rocks of Yukon-Tanana Terrane. It is intruded by at least five distinct suites of intrusive rocks of probable Mississippian to Late Cretaceous ages, at least three of which provide timing constraints on the development of tectonic foliations. Two phases of isoclinal folding, the development of a transposition foliation and late, northeast-vergent open folds characterize the ductile deformation in the area. Brittle-ductile dextral strike-slip deformation is localized along the north-trendingd Abbadie fault zone in the eastern part of the area. Bedrock in the area has potential for lode gold, copper-gold massive sulphide and nickel (platinum-group element?) mineralization along d'Abbadie Fault.

Organization: Government of Yukon | Gouvernement du Yukon
Volcano-sedimentary megaclast in Wernecke breccia, Yukon, and its bearing on the Proterozoic evolution of northwestern Laurentia.

A group of hydrothermal breccias, collectively known as Wernecke breccia, formed at approximately 1.60 Ga in Yukon. The breccias consist of a hydrothermally precipitated matrix that cements clasts derived mainly from the metasedimentary Wernecke Supergroup. Locally, clasts and megaclasts of the Bonnet Plume River intrusions, the Slab volcanics, and other volcanic rocks are also present within the breccias. This paper describes a volcano-sedimentary succession interpreted as a megaclass within Wernecke breccia. The succession consists of pyroclastic and epiclastic rocks that formed in a volcanic environment in a region of evolved crust. This finding adds detail to the character of a postulated Proterozoic terrane that may have collided with the northwestern margin of ancestral North America toward the end of the Paleoproterozoic.

Organization: Government of Yukon | Gouvernement du Yukon
Reed Creek property, southwestern Yukon

Placer mining on the Reed Creek property in the 1980's produced coarse, angular nuggets with adhering gangue material which resembles quartz-carbonate alteration outcropping on the canyon wall. The gangue is predominantly a white mixture of quartz, calcite and clay, but at least one of the nuggets is associated with distinctive black calcareous and graphitic material containing quartz veinlets. Similar black alteration has been exposed on the wall of the lower canyon at the location of an old adit. Shear zones with demonstrable oblique slip movement cut a thick sequence of low grade metavolcanic rocks at several locations in the canyon and raise the possibility that a significant shear-zone hosted gold deposit could exist in the area.

Organization: Government of Yukon | Gouvernement du Yukon
Active Transportation Design Guide for Yukon Highways

The active transportation design guide helps planners and engineers design active transportation infrastructure for Yukon highways.

It offers essential guidance on the design, operation and maintenance of active transportation infrastructure, particularly within rural highway rights-of-way. The guide also addresses key local considerations, such as winter maintenance, to ensure year-round accessibility and safety.

This guide builds on national and international best practices but is uniquely tailored to Yukon’s climate, geography, and active transportation needs. This will maximize safety, comfort and accessibility of active transportation infrastructure in the territory.

If you have questions about the guide, email hpw.teb-traffic@yukon.ca.

Organization: Government of Yukon | Gouvernement du Yukon
Yukon Exploration and Geology 2006

The 2006 volume has four parts. The first - Mineral Industry - includes overviews of hardrock and placer mining, development and exploration in the Territory as well as a summary of the Yukon Mining Incentives Program. The second part - Government - outlines the activities and organization of the Yukon Geological Survey, and includes announcements of the seventh Mining Land Use Reclamation Awards, the Robert E. Leckie Awards. The third part - Geological Fieldwork - contains reports describing regional mapping, and more detailed geoscience studies. The last part - Property Descriptions - is meant for submissions from the mineral industry on mineral occurrences and deposits.

Organization: Government of Yukon | Gouvernement du Yukon
Summary Information on the Dublin Gulch Project, Yukon Territory

The Dublin Gulch project is an intrusive-hosted gold deposit near Mayo, Yukon. It resembles the Fort Knox gold deposit near Fairbanks, Alaska. Alteration and mineralization in the area is related to the Dublin Gulch Stock, a granodiorite body dated at 92.8 ±0.5 Ma. The deposit is low-sulphide and non-acid generating which makes it amenable to heap leaching.

Organization: Government of Yukon | Gouvernement du Yukon
Recent Deglacierization of the Upper Wheaton River watershed, Yukon

We document rapid loss of glacier ice in the Wheaton River watershed which contains the northeastern-most glaciers within the Coast Mountains. Our research involves the study of the Wheaton glacier, the largest of the glaciers in the Wheaton River watershed. Since the Little Ice Age, the Wheaton glacier has lost 50% of its area and 58 to 63% of its volume. Thinning and retreat have accelerated in the past 40 years and the glacier is now so thin and short that it may disappear during this century. This loss was quantified through the analysis of sequential aerial photography and bivariate scaling analysis. Observations in the climate record from 1907 to 2005 have shown an increase in mean atmospheric temperature, as well as an increase in average winter snowfall. Despite increasing winter snowfall, changes in temperature continue to be the main cause of the persistent negative mass balance of the Wheaton glacier. If air temperatures continue to rise and glaciers disappear from the Wheaton River watershed, discharges and timing of peak flow events of the Wheaton River will be affected.

Organization: Government of Yukon | Gouvernement du Yukon
Mineral zoning in the Keno Hill silver-lead-zinc mining district, Yukon

The Keno Hill-Galena Hill mining district of central Yukon has been a prolific silver-lead-zinc producer since the early part of the century. Typical orebodies are extensive vein systems with a mineralogy consisting of siderite, quartz, pyrite, galena, sphalerite, and freibergite in varying combinations. The veins are restricted to steep SE-dipping fault zones principally contained within a brittle graphitic quartzite unit and some concordant greenstone bodies. The main silver lodes form a narrow east-west belt, 25 km long, and have been assigned a mid-Cretaceous age as have nearby granitic bodies and their associated tin and tungsten mineralization.

This study of the vein minerals indicates that groups of adjacent deposits have characteristic mineral assemblages distinguishing them from other groups; these form zones along the entire length of the belt. The following summarizes the principal mineralogical zones from west to east:: 1) pyrargyrite in quartz-siderite veins with some native silver, polybasite, stephanite, and acanthite are mainly in the west; 2) siderite, galena, sphalerite, and freibergite occur in most deposits but are found without the other index minerals on top of Galena Hill; 3) pyrrhotite and arsenopyrite are in deep vein exposures in the valley between Galena Hill and Keno Hill; 4) calcite is also in the deep veins along the eastern flank of Galena Hill but extends to the east onto Keno Hill; and 5) boulangerite-jamesonite and abundant quartz-arsenopyrite rich fractions of veins at the eastern end of the district overlap with the calcite zone. Higher gold values are recorded in zones 1, 2, and 5.

The changing mineralogical facies record an evolving environment of deposition in a continuous, 25 km long hydrothermal vein system. The western deposits are thought to be higher level, or laterally "downstream" equivalents of the eastern deposits.

This zoning sequence is typical and is well established in other regions of the world. Such systems are known to progress further downwards, into gold-quartz veins before attaining tin and tungsten mineralization and associated granitic bodies.

Organization: Government of Yukon | Gouvernement du Yukon
Updated geology and porphyry copper potential of the Klaza deposit, Mount Nansen district (Yukon MINFILE 115I 067)

Porphyry to epithermal deposit models are inferred to best describe the Late Cretaceous Klaza Au-Ag-Pb-Zn-(Cu) deposit. Here we report evidence for a protracted and complex magmatic-hydrothermal system typical of porphyry-epithermal deposits (e.g., multiple magmatic events, magma mingling, relevant vein-alteration types). In the Klaza area, there are at least four compositionally and texturally distinct intrusions interpreted as part of the Casino intrusive suite (ca. 80–76 Ma) that intrude granodiorite country rock of the Whitehorse suite (ca. 105 Ma). A ca. 72 Ma dike swarm (likely Prospector Mountain suite) was emplaced approximately 4–5 m.y. after emplacement of the Casino suite. Evidence of high-T hydrothermal activity consists of early dark micaceous (EDM) veins, sinuous and planar A-type veins, B-type, and D-type veins, and molybdenite-quartz veins. Composite epithermal-type sulphide veins cut high-T Cu-Au-Mo mineralization associated with phyllic and lesser potassic alteration assemblages. The age of porphyry-type mineralization is constrained by 187Re-187Os molybdenite dating to ca. 77 Ma (Kelly) and ca. 71 Ma (Cyprus). The 40Ar-39Ar muscovite dates from phyllic alteration in the Central Klaza zone yield ages of ca. 77 Ma. These field observations, integrated with archival Cu-Au-assay data, suggest the Klaza epithermal veins are located in the phyllic alteration shell of a two-stage Cu-Au-Mo porphyry system. It is possible that the Klaza epithermal veins represent a Prospector Mountain-age porphyry–epithermal system overprinting a Casino-age porphyry system.

Organization: Government of Yukon | Gouvernement du Yukon
Re-Os dating of gold in gold-bearing orogenic vein systems in the Klondike district – progress report

This is a preliminary study to determine the feasibility of using Re-Os to determine the age of gold in orogenic vein gold of the Klondike district, Yukon. Our objectives were to measure gold from several different vein systems to determine if enough Re and Os exists in native gold samples from the Klondike district to properly date the system. Six samples from different veins contain measurable concentrations of Re and Os and plot with significant variation on a Re-Os isochron diagram. The results indicate the need for detailed sampling of one vein system to better constrain age and source information from Re-Os systematics. Analysis of both native gold and synchronous pyrite from veins may provide enough data to determine age contraints, if native gold is not available.

Organization: Government of Yukon | Gouvernement du Yukon
Yukon Exploration 1985-86

Yukon Exploration 1985-1986 provides details of exploration and mining activity in the Yukon, including placer mining. It discusses the geology of Yukon mineral deposits and mineral districts under active investigation and provides a summary of exploration work done by mineral exploration companies. Summaries are based on reports submitted to the department for assessment credit.

Organization: Government of Yukon | Gouvernement du Yukon
Catchment basin analysis and weighted sums modeling: enhanced interpretation of RGS data using examples from map sheets 105M, 105O, and part of 105P

Yukon Geological Survey re-analyzed stream sediment sample pulps from GSC's archives in Ottawa. As a next step to improving the dataset, two of the areas covered by the recently-released Open Files were selected for further data processing to add value to the raw data. Catchment areas were delineated for each sample, and data were modeled to isolate the geochemical signatures that are characteristic of the known mineral deposit types in the area.

This report and the accompanying series of maps present the results of this “value-added” analysis of raw stream sediment geochemical data. The project was funded by the Canadian Northern Economic Development Agency (CanNor) through their Strategic Investments in Northern Economic Development program.

Organization: Government of Yukon | Gouvernement du Yukon
Yukon Exploration and Geology 1999

Yukon Exploration and Geology 1999 consists of four parts: Part 1 is a comprehensive overview of mining and exploration activity in the Yukon; Part 2 outlines the activity and organization of the Yukon Geology Program; Part 3 contains regional reports from new government mapping, geochemical and geophysical studies, as well as some placer deposit studies; and Part 4 is a collection of reports by industry and government geologists on new mines and mineral occurrences with recent exploration advances.

Organization: Government of Yukon | Gouvernement du Yukon
General Administration Manual (GAM): Volume 1

The purposes of this manual are to: 

1. provide standardized administrative policies across government departments, covering areas such as communications, public engagement, intergovernmental relations, and use of government resources.
2. support consistent governance and accountability by outlining procedures for decision-making, documentation, and interactions with Indigenous governments, boards and committees.
3. ensure compliance with legislative and ethical standards, including directives on post-employment restrictions, internal audits, and the responsible use of public assets and infrastructure.

Published by [Executive Council Office](https://yukon.ca/en/executive-council-office).

### See also

- [General Administration Manual (GAM): Volume 2](https://open.yukon.ca/information/general-administration-manual-volume-2)
- [General Administration Manual (GAM): Volume 3](https://open.yukon.ca/information/general-administration-manual-volume-3)
- [Financial Administration Manual](https://open.yukon.ca/information/financial-administration-manual)

Organization: Government of Yukon | Gouvernement du Yukon
Surficial Geological Map of Black Hills Creek (115O/7) and Parts of 115O/2, 115O/6 and 115O/10, Stewart River, Yukon

Surficial geological map (1:50,000 scale) of Black Hills Creek map area, Stewart River, central Yukon (NTS 115O/7 and parts of 115O/2,6,10) including marginal notes on surficial geology and geomorphology.

Organization: Government of Yukon | Gouvernement du Yukon
2009–10 Supplementary estimates no. 2

Supplementary estimates no. 2 for the Government of Yukon 2009–10 Budget. 
This document was prepared by the Department of Finance under the direction of Management Board for the 1st Session of the 32nd Legislature, Yukon Legislative Assembly. March 2010, Whitehorse, Yukon.

Organization: Government of Yukon | Gouvernement du Yukon
Yukon Placer Mining Industry 1989-1990

This volume is a compilation of two types of data: placer mining inspection reports and placer publications by government and industry sources. Mining inspection reports were compiled from site visits conducted by the Placer Mining Inspection Unit from 1989 to 1990. This report differs from the preceding volume "Yukon Placer Mining and Exploration 1985 to 1988" in that it does not contain summaries of Placer Exploration Programs filed for assessment credit.

Organization: Government of Yukon | Gouvernement du Yukon
Department of Education Organizational Structure

Historical organizational structures (org charts) for the [Department of Education](https://yukon.ca/en/your-government/departments/department-education) over time. This includes, as applicable, each division, sub-division, unit, program or activity, or other type of component that forms a part of its structure.

For the most recent organizational structure, see [Ministerial public body organizational structures](https://open.yukon.ca/information/publications/ministerial-public-body-organizational-structures).

Organization: Government of Yukon | Gouvernement du Yukon
Structural geology of the eastern Richardson Mountains, Yukon and Northwest Territories: Some field observations and a note of caution for palinspastic reconstructions

The Richardson anticlinorium is a major tectonic feature marking the eastern limit of the Cordilleran orogen in northern Yukon and Northwest Territories. Limited structural observations on the eastern flank of the Richardson anticlinorium indicate that the strain intensity increases significantly close to major faults that are associated with deformation zones tens to hundreds of metres wide. A predominant dextral sense of motion is documented for several major faults belonging to the Richardson fault array. However, second-order features exhibit highly variable kinematics. In several cases, strike-slip faults cut shallower dipping faults and follow steep bedding planes, suggesting that dextral motion occurred in a previously deformed and tilted sedimentary succession. The amount of displacement along the Richardson fault array is poorly constrained. Further investigation is warranted as potential large displacements may bear significant consequences on palinspastic reconstructions.

Organization: Government of Yukon | Gouvernement du Yukon
Yukon Exploration and Geology 2000

Yukon Exploration and Geology 2000 consists of four parts. Part 1 is a comprehensive overview of mining and exploration activity in the Yukon; Part 2 outlines the activity and organization of the Yukon Geology Program and includes an update on the Yukon Mining Incentives Program as well as announcements of the Mining Land Use Reclamation Awards and the Robert E. Leckie Awards; Part 3 contains reports describing regional mapping, and more detailed geological, geochemical, geophysical, geochronological, paleontological, paleomagnetic and placer deposit studies; and Part 4 is a collection of reports of mineral occurrences with recent exploration advances and is authored by industry and government geologists, as well as university students.

Organization: Government of Yukon | Gouvernement du Yukon
A structural analysis of the upper Swift River area (105 B/3), Yukon, Part I: Dan Zn occurrence and implications for sulphide mineralization

Marble, calc-silicate rock and pelitic layers of the Ram Creek assemblage surrounding the Dan Zn (± Cu-Pb-Ag) occurrence display ample evidence of a monocyclic structural evolution with three main events of progressive deformation (D1-D3). These events developed a tightly folded package of west-northwest-trending tectonites. Primary planar structures (S0) generally lie sub-parallel to two tectonic foliations (S1 and S2), which dip shallowly to steeply southwest. Inter-foliation slip (D3) resulted in a transverse, sub-vertical foliation (S3) that dips generally shallowly to moderately north. Cross-sections based on new mapping and fold analysis indicate that similar folds containing stratabound zinc-sulphide mineralization should be present south of the Dan occurrence, as part of regional north-northeast-verging folds or a thrust-fault-repeated succession.

Organization: Government of Yukon | Gouvernement du Yukon
Residual total magnetic field, McQuesten Aeromagnetic Survey, NTS 115P/6 and 115P/7, 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
Residual total magnetic field, McQuesten Aeromagnetic Survey, NTS 115P/3 and 115P/4, 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