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Overview of Yukon placer geology, gold production and prospects
The physiography and glacial history of Yukon bear directly on the geological setting, grade and economic viability of Yukon placer deposits. The limits of several advances of the Cordilleran Ice Sheet are evident in south central Yukon in the form of deposits and ice-marginal features left successively southeast by retreat of the three main glacial episodes. The oldest, including multiple glaciations, was the pre-Reid at up to 3 Ma, succeeded by the Reid at up to 200 Ka, and the McConnell which ended approximately 10.3 Ka. Yukon placer deposits are grouped into five broad categories based on age, gemorphic and sedimentologic characteristics. These are 1) Pliocene to early Pleistocene alluvial placer deposits preserved as high level terraces buried beneath non-auriferous overburden; 2) Pleistocene non-glacial alluvial placer deposits that occur as valley-bottom fill and low to high level terraces in unglaciated terrain; 3) Interglacial placer deposits that occur as valley-bottom alluvial fill or low terraces in drainages that have escaped the effects of glacial erosion; 4) Glacial placer deposits that have formed when gold from regional bedrock or paleoplacer sources was incorporated into glacial drift; and 5) Recent placer deposits that are found as colluvial deposits, valley-bottom alluvial blankets in gulches and tributary valleys, bar deposits in major river systems and beach and nearshore marine deposits. Ten major regions produce placer gold in Yukon:: Indian River; Klondike; west Yukon (Sixtymile/Fortymile/Moosehorn); Lower Stewart; Clear Creek; Mayo; Dawson Range; Kluane; Livingstone and Whitehorse South. Since 1886, these areas have produced over 15 million crude ounces of placer gold, mainly from the unglaciated Klondike, west Yukon and Lower Stewart regions. Many areas in Yukon remain unexplored for new placer gold deposits, both in unglaciated and glaciated areas. Areas of exploration potental in unglaciated areas include abandoned channels, oxbows and point bars, high level terraces, and tributary gulch and creek placers. In and along the margins of glaciated areas, pre-glacial or interglacial placer deposits may lie buried by glacial and glaciofluvial drift. Lower-grade placer deposits may have formed by glaciofluvial reworking of pre-glacial or interglacial placers. Non-glacial placer deposits may be found unconformably overlying glacial drift. Deeply incised interglacial valleys oriented obliquely to paleo-ice flow directions are also favourable locations for the preservation of economic placer deposits in glaciated areas. Interest in exploring for new gold reserves has been sparked by new placer research and surficial mapping programs initiatied by the Yukon Geology Program and the Geological Survey of Canada. As this research continues to add to the understanding of placer gold deposits, exploration activity is expected to continue and new reserves in both unglaciated and glaciated areas may be found.
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Yukon Exploration 1985-86
공공데이터포털
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.
Yukon Geology and Exploration 1979-80
공공데이터포털
This volume follows earlier annual Mineral Industry Reports for Yukon published by the Department of Indian Affairs and Northern Development. In addition to the summaries of work by exploration companies found in those earlier publications, this volume contains reports on the geology of mineral deposits and mineral districts under active investigation by geologists of the Department. This volume further includes a set of maps showing most known mineral occurrences in relation to the mineral and placer claims in good standing with references to descriptions of each occurrence. It is intended to keep these maps up-to-date and to produce them annually as a convenient inventory of occurrences. This volume contains material for two years, effectively bringing this report series up-to-date. The new title for the report was chosen to more accurately reflect its content.
Yukon Exploration and Geology 1981
공공데이터포털
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.
Yukon Exploration and Geology 2024
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The Yukon Exploration and Geology (YEG) volumes include two publications: Yukon Exploration and Geology Overview, and Yukon Exploration and Geology Technical Papers. These key annual publications from the Yukon Geological Survey (Energy, Mines and Resources, Government of Yukon) highlight geoscience research and activities across the Yukon from the previous year. The YEG Overview includes four papers that provide summaries of the Yukon Geological Survey’s staff activities, as well as exploration and development overviews for both the hardrock and placer industries in the Yukon. The YEG Technical Papers volume contains a number of current research reports on various geoscience projects across the territory. The YEG Overview is available in digital format and in a limited colour print run. The YEG Technical Papers volume is available in digital format only. All Yukon Geological Survey publications can be downloaded from our website, https://data.geology.gov.yk.ca/. As in previous volumes, YEG 2024 aims to provide the most up-to-date information on mining and mineral exploration activity in the Yukon, both in the hardrock and placer sectors. The success of YEG relies on the continued contributions from prospectors, exploration and government geologists, mining companies, and academic students, all of whom are willing to contribute to public geoscience for the benefit of the scientific community, the public, and the mineral industry of the Yukon. Their work is greatly appreciated. More importantly, I would like to acknowledge the support from our 14 Yukon First Nation partners whose lands and traditional territories we continue to work on. The mining industry and the valuable geoscience data that is gathered would not happen without their engagement and support. We look forward to strengthening and fostering honest and meaningful partnerships with all Yukon First Nations.
Yukon Placer Mining Industry 1991-1992
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This report documents the state of the Placer Mining Industry in the Yukon Territory for the 1991 and 1992 mining seasons. The majority of this volume consists of detailed descriptions of placer operations visited by the staff of the Placer Mining Section of the Mineral Development Division, Northern Affairs Program, Yukon Region. Also included is information that may be useful to readers who are interested in searching for and developing placer properties in the Yukon Territory.
Yukon Placer Mining Industry 2021 to 2023
공공데이터포털
The Yukon Placer Mining Industry report reflects the strong relationship between the Yukon Geological Survey (YGS) and the Yukon placer mining industry. Our annual tours into the various gold fields are always productive and provide new details on placer gold settings, which this report encapsulates.
Yukon Exploration and Geology 1992
공공데이터포털
Yukon Exploration and Geology 1992 consists of three parts: Part A is a comprehensive overview of mining and exploration activity in the Yukon; Part B summarizes the activities of the Exploration and Geological Services Division (EGSD) of the Northern Affairs Program; Yukon Region and the activities of the Canada/Yukon Geoscience Office; and Part C which documents significant new geoscientific information gathered by EGSD geologists, Canada/Yukon Geoscience Office geologists and affiliated geologists such as students and contractors. Part C is a compilation of geological research papers based on geological fieldwork; these papers are searchable as separate individual metadata records.
Yukon Exploration and Geology 1983
공공데이터포털
This report contains three main sections: 1) description of Exploration and Geological Services Division, mining and exploration overview, and overview of Mineral deposits of the northern Cordillera; 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 1983 and summaries of assessment work undertaken by exploration companies to obtain assessment credits.
Yukon Exploration and Geology Overview 2017
공공데이터포털
This volume is the complete set of overview papers for 2017: Summary of YGS activities Placer mining summary YMEP Hard rock mining, development and exploration summary Osiris and Plateau property summaries Leckie award winners List of YGS publications for 2017
Yukon Exploration and Geology 1982
공공데이터포털
This report contains three main sections: 1) introduction, description of Exploration and Geological Services Division 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 1982 and summaries of assessment work undertaken by exploration companies to obtain assessment credits.
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