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The Sheahan Diamond Literature Reference Compilation - Technical, Media and Corporate Articles based on Major Region - Yukon
The Sheahan Diamond Literature Reference Compilation is compiled by Patricia Sheahan who publishes on a monthly basis a list of new scientific articles related to diamonds as well as media coverage and corporate announcements called the Sheahan Diamond Literature Service that is distributed as a free pdf to a list of followers. Pat has kindly agreed to allow her work to be made available as an online digital resource at Kaiser Research Online so that a broader community interested in diamonds and related geology can benefit. The references are for personal use information purposes only; when available a link is provided to an online location where the full article can be accessed or purchased directly. Reproduction of this compilation in part or in whole without permission from the Sheahan Diamond Literature Service is strictly prohibited. Return to Diamond Region Index
Sheahan Diamond Literature Reference Compilation - Scientific Articles by Author for all years
Each article reference in the SDLRC is tagged with one or more key words assigned by Pat Sheahan to highlight the main topics of the article. In addition most references have been tagged with one or more region words. In an effort to make it easier for users to track down articles related to a specific region, KRO has extracted these region words and developed a list of major region words presented in the Major Region Index to which individual region words used in the article reference have been assigned. Each individual Region Report contains in chronological order all the references with a region word associated with the Major Region word. Depending on the total for each reference type - technical, media and corporate - the references will be either in their own technical, media or corporate Region Report, or combined in a single report. Where there is a significant number of technical references there will be a technical report dedicated to the technical articles while the media and corporate references are combined in a separate region report. References that were added in the most recent monthly update are highlighted in yellow within the Region Report. The Major Region words have been defined by a scale system of "general", "continent", "country", "state or province" and "regional". Major Region words at the smaller scales have been created only when there are enough references to make isolating them worthwhile. References not tagged with a Region are excluded, and articles with a region word not matched with a Major Region show up in the "Unknown" report.
Kimberlite - diamondiferous
Lamproite - diamondiferous
Lamprophyre - diamondiferous
Other - diamondiferous
Kimberlite - non diamondiferous
Lamproite - non diamondiferous
Lamprophyre - non diamondiferous
Other - non diamondiferous
Kimberlite - unknown
Lamproite - unknown
Lamprophyre - unknown
Other - unknown
Future Mine
Current Mine
Former Mine
Click on icon for details about each occurrence. Works best with Google Chrome.
CITATION: Faure, S, 2010, World Kimberlites CONSOREM Database (Version 3), Consortium de Recherche en Exploration Minérale CONSOREM, Université du Québec à Montréal, Numerical Database on consorem.ca. NOTE: This publicly available database results of a compilation of other public databases, scientific and governmental publications and maps, and various data from exploration companies reports or Web sites, If you notice errors, have additional kimberlite localizations that should be included in this database, or have any comments and suggestions, please contact the author specifying the ID of the kimberlite: [email protected]
Gold bearing sulfide veins in shoshonites, formed by high -T, high -Clalkaline fluids, Prospector Mtn. Yukon Territory
Geological Association of Canada (GAC)/Mineralogical Association of Canada (MAC)/SEG Annual Meeting May 27-29. Toronto, Ontario, Abstract, Vol. 16, p. A46. Abstract
Implications of HFS/LIL trace element variations for the mantle sources of recent alkaline volcanism in northern British Columbia and the Yukon, Canada
Eos Transactions, Vol. 73, No. 14, April 7, supplement abstracts p.325
Collisional orogenesis in the northern Canadian Cordillera: implications for Cordilleran crustal structure, ophiolite emplacement, continental growth, and the terrane hypothesis.
Earth and Planetary Science Letters, Vol. 232, 3-4, April 15, pp. 333-344.
Upper mantle temperature determined from combining mineral composition, electrical conductivity laboratory studies and magnetotelluric field observations:
Earth and Planetary Science Letters, Vol. 236, 1-2, pp. 258-268.
Canada, British Columbia, Alberta, Yukon, Cordillera
Upper mantle temperature determined from combining mineral composition, electrical conductivity laboratory studies and magnetotelluric field observations.
Earth and Planetary Science Letters, Advanced in press,
Subsidence and exhumation dynamics of eclogites in the Yukon-Tanana Terrane, Canadian Cordillera: petrological reconstructions and geodynamic modeling.
Abstract: The Rae craton in Canada’s North contains several kimberlite fields and has been the subject of episodic diamond exploration, with proven diamond-bearing deposits. However, relatively little is known about the deep mantle lithosphere that underpins the architecturally complex crust of this craton. The Darby Kimberlite field, located ~120 km southwest of the community of Kugaaruk, Nunavut, provides an opportunity to study the mantle beneath the western portion of the central Rae craton via mantle xenoliths. The Darby kimberlite field contains eight kimberlite bodies erupted at circa 540 Ma. Five of the kimberlites have proven to be diamond-bearing including the 12 hectare ‘Iceberg’ kimberlite. Mantle xenoliths were collected from kimberlite float above proven kimberlite targets across the property. Most of the surface kimberlite is highly altered and hence the peridotite xenoliths they contain are generally serpentinized or deeply-weathered. Eclogites/pyroxenites were recovered from each locality visited. A total of 33 mantle xenoliths exceeding one cm in maximum dimension (14 peridotites and 19 “eclogites”) were selected for mineral chemistry and bulk analysis. Four peridotite xenoliths contain fresh garnet. Clinopyroxenes from kimberlite heavy mineral concentrate provide a preliminary geotherm for the West Central Rae lithosphere and indicate a lithospheric depth of ~200 km. Using Ni-in-garnet temperatures, four garnet peridotites and 49 peridotitic garnets from concentrate yield two distinct mantle sampling depths. Whole rock Re-depletion ages for Darby peridotites range from Mesoarchean to Paleoproterozoic. Archean whole rock TMA ages for the eclogites/pyroxenites are consistent with a Mesoarchean age for the western Central Rae lithosphere, older than the lithosphere beneath the Repulse Bay block to the East. The anomalously high abundance of eclogite/pyroxenite xenoliths and garnet concentrate found in the Darby field (58 % of xenoliths and 82 % of concentrate) is at odds with the abundance of eclogite thought to be present in cratonic lithospheric mantle from xenocryst studies (~one to five %). The high abundance may be related to the proximity of the field to the proposed suture between the Committee Block and the Queen Maud Block to the far West of the Rae craton
Abstract: We examine the partial melting and the cooling history of a ~5?km section of mantle lithosphere preserved in the Donjek massif, part of a Permian ophiolite in the northern Cordillera of Yukon, Canada. The mantle rocks are depleted spinel harzburgite containing <3% clinopyroxene displaying steep rare-earth element (REE) chondrite-normalized profiles and low (Gd/Yb)n (0.02 to 0.07) compared to most other ophiolites. The REE patterns of clinopyroxene can be modeled as 16-20% partial melts of typical depleted mid-ocean ridge (MOR) mantle. The REE exchange between coexisting ortho- and clinopyroxene preserves temperatures (TREE) of 1150-1360?°C, some of the highest values recorded in ophiolites and abyssal peridotites, and show a positive correlation with CaMg exchange (solvus) temperatures (TBKN) of 900-970?°C. The harzburgite represents lithosphere formed at an initial melting temperature of ~ 1350?°C that cooled at rate of 10?1 to 10?4?°C/year as deduced by TREE values with cation diffusion and grain size data. The TREE temperatures and cooling rates for the Donjek massif show a regular systematic variation with depth from the crust-mantle transition along a trend similar to the Samail ophiolite of Oman, consistent with conductive heat transfer beneath a cool lower crust. High near-solidus temperatures and the cooling rates in the massif were a consequence of rapid obduction against oceanic crust along either a transform or low angle detachment soon after melt extraction. Final emplacement of the ophiolite as klippen on underlying continental crust occurred ~ 40?m.y. later.
