 | | Journal (article/letter/editorial) | | Primitive Magma From the Jericho Pipe, N.W.T., Canada: Constraints on Primary Kimberlite Melt Chemistry S. E...UNIVERSITY OF BRITISH COLUMBIA, VANCOUVER, B.C., CANADA, V6T 1Z4 RECEIVED APRIL 23, 1999; REVISED TYPESCRIPT...primary kimberlite melt composition from the Slave craton, based on samples of aphanitic kimberlite from...from the Jericho kimberlite pipe, N.W.T., Canada. Three samples derive from the margins of dykes where kimberlite...CO2 (10â17 wt %). Relative to bulk macrocrystal kimberlite, they have lower mg-numbers and lower MgO but |  | | Journal (article/letter/editorial) | | Peridotite and Pyroxenite Xenoliths from the Jericho Kimberlite: Implications for the Thermal State of the...the Mantle beneath the Slave Craton, Northern Canada M. G. KOPYLOVA1â, J. K. RUSSELL1 AND H. COOKENBOO2...UNIVERSITY OF BRITISH COLUMBIA, VANCOUVER, B.C., CANADA, V6T 1Z4 2 CANAMERA GEOLOGICAL LTD, 399 MOUNTAIN...MOUNTAIN HIGHWAY, NORTH VANCOUVER, B.C., CANADA, V6B 2M9 RECEIVED NOVEMBER 21, 1997; REVISED TYPESCRIPT ACCEPTED...following types of mantle xenoliths from the Jericho kimberlite in the Slave craton: (1) coarse peridotite; |  | Kamenetsky, Vadim S., Kamenetsky, Maya B., Weiss, Yakov, Navon, Oded, Nielsen, Troels F.D., Mernagh, Terrence P. (2009) How unique is the Udachnaya-East kimberlite? Comparison with kimberlites from the Slave Craton (Canada) and SW Greenland. Lithos, 112. 334-346 doi:10.1016/j.lithos.2009.03.032 | Journal (article/letter/editorial) | | Udachnaya-East kimberlite? Comparison with kimberlites from the Slave Craton (Canada) and SW Greenland...2009 Available online 31 March 2009 Keywords: Kimberlite Olivine Melt inclusions Alkali carbonates Chlorine...Contrary to existing dogma that the Udachnaya-East kimberlite was either contaminated by the crustal sediments...idea of alkali- and chlorine enrichment of the kimberlite parental melt by studying olivine-hosted melt...in kimberlites from the Slave Craton, Canada (Gahcho KuĂ©, Jericho, Aaron and Leslie pipes) and southern |  | | Journal (article/letter/editorial) | | Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2E3 b Division of Earth Sciences, University...diamond productions from Panda (Ekati Mine) and Snap Lake with those from southern Africa shows significant...central and southern Slave (Panda, DO27 and Snap Lake kimberlites) and the Kaapvaal indicates that the...southeast side of Lac de Gras (pipe DO27 of the Tli Kwi Cho kimberlite complex, see Doyle et al., 1999)...inclusions in diamonds from the Snap Lake kimberlite dike (near Camsell Lake, 220 km NE of Yellowknife); no |  | Masun, K.M., Doyle, B.J., Ball, S., Walker, S. (2004) The geology and mineralogy of the Anuri kimberlite, Nunavut, Canada. Lithos, 76 (1) 75-97 doi:10.1016/j.lithos.2004.03.022 | Journal (article/letter/editorial) | | Anuri kimberlite, Nunavut, Canada K.M. Masun *, B.J. Doyle, S. Ball, S. Walker Kennecott Canada Exploration...Suite 354, 200 Granville Street, Vancouver, BC, Canada V6C 1S4 Received 25 June 2003; accepted 6 January...online 18 May 2004 Abstract The 613 F 6 Ma Anuri kimberlite is a pipelike body comprising two lobes with...â 5 ha. The pipe is infilled with two contrasting rock types: volcaniclastic kimberlite (VK) and, less...hypabyssal kimberlite (HK). The HK is an archetypal kimberlite composed of macrocrysts of olivine, spinel, mica |  | | Journal (issue) | | FEATURE ARTICLE______________ 208 Diamonds in Canada B. A. Kjarsgaard and A. A. Levinson This article...Massachusetts A. A. Levinson Calgary, Alberta, Canada Christopher P. Smith Lucerne, Switzerland Editor...still a newcomer as a supplier of rough diamonds, Canada is now among the worldâs most important diamond... GEMS & GEMOLOGY FALL 2002 207 DIAMONDS IN CANADA By B. A. Kjarsgaard and A. A. Levinson A newcomer...supplier of rough diamonds to the world market, Canada is currently the seventh most important diamond |  | | Journal (article/letter/editorial) | | University, 3450 University Street, Montreal, Quebec, Canada H3A 2A7 Abstract The Earthâs continents are cored...mantle. Low-temperature mantle xenoliths from kimberlite pipes indicate that the shallow parts of these...composition of Fig. 1. Radar mosaic map of northwestern Canada showing the locations of mantle xenolith localities...Cordillera, the Jericho kimberlite pipe in the Slave Province, and the Nikos kimberlite pipe of Somerset...unimodal Cordilleran xenolith suitesâblack circles, Jericho pipe and Nikos pipesâwhite triangles. D. Francis |  | Griffin, W.L., O'Reilly, Suzanne Y., Doyle, B.J., Pearson, N.J., Coopersmith, H., Kivi, K., Malkovets, V., Pokhilenko, N. (2004) Lithosphere mapping beneath the North American plateâ. Lithos, 77 (1) 873-922 doi:10.1016/j.lithos.2004.03.034 | Journal (article/letter/editorial) | | Australia c Kennecott Canada Exploration Inc., 200 Granville Street, Vancouver, BC, Canada V6C 1S4 d Great...80522, USA e Kennecott Canada Exploration Inc., Thunder Bay, Ontario, Canada P7B 2Y1 f United Institute...reflect extensive metasomatic modification. In E. Canada, the degree of modification increases toward the...less refractory. The SCLM beneath the Kansas kimberlite field is highly melt-metasomatised, reflecting...Localities and number of garnets analysed Locality Pipe Alberta Arkansas Three pipes Prairie Creek Twin |  | | Journal (article/letter/editorial) | | report a redox proïŹle based on MoÌssbauer data of spinel and garnet to a depth of 210 km from mantle xenoliths...(N) and southeastern (SE) Slave craton (northern Canada). The proïŹle transects three depth facies of peridotites...diïŹerent bulk composition, represented by spinel peridotite, spinelâgarnet peridotite, lowtemperature garnet...pyroxenite. The shallow, more depleted N Slave spinel peridotite records lower oxygen fugacities compared...less depleted N Slave spinelâ garnet peridotite, consistent with their diïŹerent spinel Fe3+ concentrations |  | | Book | | © 2011 Royal Ontario Museum, Toronto, Ontario, Canada. All rights reserved. No part of this publication...Cataloging-in-Publication Data (U.S.) Library and Archives Canada Cataloguing in Publication Tait, Kimberly. Tait...States by Firefly Books (U.S.) Inc. Published in Canada by Firefly Books Ltd. PO. Box 1338, Ellicott Station...at the Royal Ontario Museum, Toronto, Ontario, Canada. Photography: Brian Boyle, MPA, FPPO, and Miguel...publishing program by the Government of Canada through the Canada Book Fund as administered by the Department |  | | Journal (article/letter/editorial) | | com/locate/lithos The influence of Cr on the garnetâspinel transition in the Earthâs mantle: experiments in...2004 Abstract The position of the transition from spinel peridotite to garnet peridotite in a simplified...pressure â temperature field exists where garnet and spinel coexist. The width of this divariant field strongly...Garnet lherzolite; Spinel lherzolite; Experimental petrology; Chromium; Garnet spinel transition; MgO â...clinopyroxene, orthopyroxene and spinel. At higher pressures, however, the spinel bearing assemblage converts |  | | Journal (article/letter/editorial) | | clinopyroxene (cpx) inclusions in diamonds from a kimberlite pipe in northeastern China. The observed high mg#...from the âNo. 50â kimberlite pipe near Dalian, Liaoning Province, China. The pipe intruded into the Sino-Korean...of the typical Type I kimberlite. The geological settings of this kimberlite pipe and the general features...that the mineral inclusions in diamonds from this pipe are almost exclusively the peridotitic suite, with...cpx inclusions in diamonds from the âNo.50â kimberlite pipe, shaded area shows the compositional range |  | | Journal (article/letter/editorial) | | have d13C of -2.5 to -4.0 % and derive from the spinel-garnet and garnet facia of harzburgite. Geothermobarometry...Columbia, 6339 Stores Rd, Vancouver, BC V6T 1Z4, Canada e-mail: cmiller@eos.ubc.ca J. Ryder Dianor Resources...649 3rd Avenue, 2nd Floor, Val-dâOr, QC J9P 1S7, Canada 150 km by the Jurassic, when the mantle was heated...fluids. Keywords Diamond inclusion Neoarchean kimberlite Southern Superior Tectonic erosion Cratonic...Manitouwadge-Hornepayne; 3 Shebandowan; 4 Winston Lake; 5 Michipicoten. The Wawa metaconglomerate host |  | | Book | | org/details/seventhinternati07inte SEVENTH INTERNATIONAL KIMBERLITE CONFERENCE Cape Town, April 1998 EXTENDED ABSTRACTS...Organising Committee of the 7th International Kimberlite Conference takes no responsibility for authorsâ...omissions. SOUTH AFRICA SEVENTH INTERNATIONAL KIMBERLITE CONFERENCE SPONSORS The 7IKC Organising Committee...recently discovered kimberlites of the Siberian kimberlite province. 9 K - rich clinopyroxenes as mantle...Chromite Macrocrysts and their Inclusions, Guaniamo Kimberlite Field, Venezuela. Primary and related diamond |  | | Journal (article/letter/editorial) | | and Geophysics, University of Calgary, Calgary, Canada AB T2N 1N4 b Department of Geology, Dickinson College...Sciences, University of British Columbia, Vancouver, Canada BC V6T 1Z4 Received 4 January 2007; accepted 31...Nisling (Ns), Nisling (Ns), Cassiar terrane (Ca), Lake George assemblage, and Seventymile-Slide Mountain...Devonian and Mississippian augen gneisses of the Lake George assemblage; no granulites have been detected...2). DuselBacon et al., (2002, 2006) interpret the Lake George assemblage as a parautochothonous continental |  | | Journal (article/letter/editorial) | | Geoscience, University of Calgary, Calgary, Alberta, Canada T2N 1N4 a r t i c l e i n f o Article history:...part of the Slave craton and beneath the Kimberley region of the Kaapvaal craton based on known petrologically-observed...the Lac de Gras region of Slave craton (northern Canada) and below the Kimberley region of the Kaapvaal...depletion of this layer. In contrast, the Kimberley region of the Kaapvaal craton exhibits far more uniform...decreasing Vp but increasing Vs with increasing Mg# of spinel and garnet peridotites. As the Slave lithospheric |  | | Journal (article/letter/editorial) | | Kaapvaal craton, South Africa, and Slave Province, Canada, indicates that cooling rates at the base of Archean...Off-craton, massif peridotite 0.018 Off-craton, spinel peridotite 0.033 [33] [33] Average values for...On-craton, all 0.093 On-craton, kimberlite hosted 0.104 On-craton, non-kimberlite hosted 0.028 [33] [33] [33]...[33] Values for xenolith samples from the Jericho kimberlite, Slave Province Low T xenoliths 0.15â0.27...linked to the deep perturbations that generated kimberlite eruptions [16]. Part of this enrichment, however |  | | Journal (article/letter/editorial) | | de Paris, France Geotop-UQAM-McGill, MontrĂ©al, Canada A R T I C L E I N F O Article history: Received...volcaniclastic rocks of the Wawa region of the Superior Province, Canada (Poujol et al., 2003; Stachel et...the lithosphere and will be restricted to a lower region where viscosity variations do not exceed about...worldwide Province Canada Slave Superior Trans Hudson Orogen Lynn Lake Belt Flin-Flon Snow Lake Belt Grenville...samples Off-craton, massif peridotite Off-craton, spinel peridotite 0.018 0.033 (2) (2) Average values |  | | Journal (article/letter/editorial) | | from the inversion of magnetotelluric (MT) data. Spinel lherzolite and granulite xenoliths found in basaltic...mantle and crust beneath southern Tien Shan. The spinel lherzolite xenoliths correspond to the lithospheric...equilibration conditions of mafic granulites and spinel lherzolites infer that the paleogeotherm corresponded...70â66 Myr ago. The presentâday heat flux in the region is about 55â60 mW mâ2. The position of the Moho...for the mafic granulite and 8.0 km sâ1 for the spinel lherzolite. The electrical conductivity of xenoliths |  | | Book | | Society (Fig. 2.14), Mineralogical Association of Canada (Fig. 9.23), Mineralogical Society of America (Fig... see Fig. 1.5); the dashed lines delineate the region of overlap between alkali and subalkali basalts...may also form near the base of a lava flow; such pipe vesicles (Fig. 2.8b) result from the upward invasion...vesicularity in a basalt lava (Auckland, New Zealand). (b) Pipe amygdales at the base of a basalt lava in Skye;...lines in Fig. 2.1, and basalts plotting in this region are commonly designated as transitional basalts |  | | Book | | garnet peridotite xenolith from the Monastery kimberlite in South Africa. Polarizers are only partially...2, France D. Canil University of Victoria, BC, Canada M. J. Drake University of Arizona, Tucson, AZ,...USA R. W. Luth University of Alberta, Edmonton, Canada W. F. McDonough University of Maryland, College...transformations as upper mantle olivine changes first into spinel and then into perovskite structured high-pressure...pressure, temperature, and composition of the melting region or magma chamber changes during progressive melting |  | | Report (volume) | | more than 10,000 prospectors to the semi-desert region, and inevitably led to the recognition of diamond...diamond in their volcanic host rock, dubbed kimberlite (Davies 1984; Hazen 1999). The South African kimberlitesâ...intrusion in coal/graphite; 2 = meteorite; 3 = kimberlite; 4 = other ultramafic **See Table 3 for locality...analysis shows that ophiolite-hosted Code Locality Canada C1 Jeffrey Mine, Quebec Carbides* 15 Type**...K K, M China C2 Fuxian kimberlite field, Liaoning Prov. C3 Mengyin kimberlite field, Linyi Prefecture |  | | Book | | position of 56Fe; and (iv) the abundance peaks in the region past iron at the neutron closed shell positions...mixing caused by the convection, the entire unstable region evolves essentially chemically homogeneouslyâreplenishing...of burning region (central or shell burning) and depleting the fuel elsewhere in that region at the same...burning of this fuel then commences outside that region. Table 1 summarizes the burning stages and their...maximum temperatures that have been reached in each region in the preceding hydrostatic burning stages (Table |  | | Book | | continental crust, it is useful to begin by defining the region under consideration and to provide some generalities...rocks may not be representative of their source region. These elements include the alkali and alkaline-earth...natural division of the crust into thirds; (ii) the region beneath the upper crust and above a Conrad discontinuity...there is a layer beneath the Conrad; and (iii) the region immediately beneath the Conrad if there are two...Central Slave Province, Canada Host Xenolith types Types of analyses Pipe age Crust age Age References |  | | Journal (issue) | | lithosphere at the Cordlllera-craton boundary of western Canada Dante Canil and J. Kelly Russell 1140 Mercury...illustrate the effects of magmatic: sulfide across a P-T region (Fig. 2). To introduce S, 0.5 wt% FeS was added...central CLP is the classical study site of the region. Studies there provided the first detailed magneto-...Gulang, and Jingbian sections, which span a wide region of the CLP (Hao et al., 2012; Sun et al_, 2006a;...of state for carbon dioxide covering the fluid region from the triple-point temperature to I JOO Kat |
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