 | | Journal (article/letter/editorial) | | systematics of peridotite xenoliths from Somerset Island kimberlites, Canada Stefanie S. Schmidberger a;b; ,...University, 3450 University Street, Montre¤al, QC, Canada H3A 2A7 GEOTOP, Universite¤ du Que¤bec a' Montre¤al...O. Box 8888, succ. Centre-Ville, Montre¤al, QC, Canada H3C 3P8 Received 6 November 2001; accepted 23...constituent garnets from the Nikos kimberlite (100 Ma) on Somerset Island in order to constrain the isotopic...low-temperature Nikos peridotites ( 6 1100‡C), which represent the shallow Somerset lithosphere, are |  | | Journal (article/letter/editorial) | | American craton: mantle xenolith evidence from Somerset Island kimberlites S.S. Schmidberger ) , D. Francis...UniÕersity, 3450 UniÕersity Street, Montreal, Quebec, Canada H3A 2A7 Received 23 March 1998; received in revised...Abstract The recently discovered Nikos kimberlite on Somerset Island, in the Canadian Arctic, hosts an...garnet–pyroxenite. The whole rock and mineral data for 54 Nikos xenoliths indicate a highly refractory underlying...continental terranes Žave. olivine Fo s 91.0.. The Nikos xenoliths yield pressures and temperatures of last |  | | Journal (article/letter/editorial) | | from Somerset Island kimberlites: Evidence for lithosphere stratification beneath Arctic Canada S. S...University Street, Montréal, Québec, H3A 2A7, Canada GEOTOP, Université du Québec à Montréal, CP...succ. Centreville, Montréal, Québec, H3C 3P8, Canada 2 (Received December 14, 2000; accepted in revised...pyroxenite xenoliths and their host Nikos kimberlite (100 Ma) from Somerset Island to constrain the isotopic character...root beneath the northern Canadian craton. The Nikos peridotites are enriched in highly incompatible |  | Wu, Fu-Yuan, Yang, Yue-Heng, Mitchell, Roger H., Li, Qiu-Li, Yang, Jin-Hui, Zhang, Yan-Bin (2010) In situ U–Pb age determination and Nd isotopic analysis of perovskites from kimberlites in southern Africa and Somerset Island, Canada. Lithos, 115 (1) 205-222 doi:10.1016/j.lithos.2009.12.010 | Journal (article/letter/editorial) | | from kimberlites in southern Africa and Somerset Island, Canada Fu-Yuan Wu a,⁎, Yue-Heng Yang a, Roger...Geology, Lakehead University, Thunder Bay, Ontario, Canada P7B 5E1 a r t i c l e i n f o Article history:...U–Pb ages Nd isotopes Perovskite Kimberlite Southern Africa Canada a b s t r a c t Determination of...emplacement ages and initial isotopic composition of kimberlite by conventional isotopic methods using bulk rock...twelve samples from 7 kimberlites from Somerset Island, Canada have been selected for in situ perovskite |  | | Journal (article/letter/editorial) | | of the Archean Mantle Root beneath Somerset Island, Arctic Canada S. S. SCHMIDBERGER∗ AND D. FRANCIS...UNIVERSITY STREET, MONTRÉAL, QUÉBEC H3A 2A7, CANADA RECEIVED APRIL 11, 2000; REVISED TYPESCRIPT ACCEPTED...and garnet pyroxenites from the Nikos kimberlite pipe on Somerset Island, Canadian Arctic, their constituent...constituent garnet and clinopyroxene, and the host kimberlite. These refractory mantle xenoliths are depleted...between calculated and analyzed REE contents for the Nikos bulk rocks that amount to LREE deficiencies of 70–99% |  | Malarkey, J., Pearson, D.G., Kjarsgaard, B.A., Davidson, J.P., Nowell, G.M., Ottley, C.J., Stammer, J. (2010) From source to crust: Tracing magmatic evolution in a kimberlite and a melilitite using microsample geochemistry. Earth and Planetary Science Letters, 299 (1) 80-90 doi:10.1016/j.epsl.2010.08.020 | Journal (article/letter/editorial) | | source to crust: Tracing magmatic evolution in a kimberlite and a melilitite using microsample geochemistry...3LE, United Kingdom Geological Survey of Canada, Ottawa, Canada K1A 0E8 Colorado School of Mines, Golden...2010 Editor: R.W. Carlson Keywords: perovskite kimberlite melilitite Sr isotopes megacrysts a b s t r...study of primary minerals within the Jos kimberlite, Canada, in order to observe how different phases...progressive crustal interaction in the evolving kimberlite. Identification of the least contaminated phases |  | | Journal (article/letter/editorial) | | University, GEOTOP UQAM-McGill, Montréal, Québec, Canada H3A 2A7 A R T I C L E I N F O Article history:...May 2008 Available online 4 June 2008 Keywords: Kimberlite Aillikite Lithospheric mantle Continent Diamond...Si-poor side of the composition of olivine. Group-I kimberlite can be distinguished from aillikite on the basis...inverse correlation between diamond grade and kimberlite Fe and Ti contents may simply reflect the fact...diamond production of kimberlite fields and the Fe and Ti contents in their host kimberlite and conclude that |  | | Journal (article/letter/editorial) | | What is a Kimberlite? Petrology and Mineralogy of Hypabyssal Kimberlites Roger H. Mitchell1, Andrea Giuliani2...analyses. Melt inclusion studies have shown that kimberlite melts contain higher alkali concentrations than...(magmatic and/or crustal), the composition of primary kimberlite melts remains unknown. intrusive bodies of holocrystalline...coherent rock (Fig. 1A) occur at different depths in kimberlite pipes (see Fig. 4 in Giuliani and Pearson 2019...ic k imberlites” (K PK; formerly “tuffisitic kimberlite”; named after a classic locality in South Africa) |  | | Journal (article/letter/editorial) | | oceanic setting mimics that defined by cratonic kimberlite provinces and suggests that the Malaitan upper...chain is located within the southwestern Pacific region and delineates the boundary between the Pacific...Indo–Australian lithospheric plates (Fig. 1). The region is dominated by the Ontong Java Plateau (OJP; Fig...et al., 1999): The Pacific Province (includes the island of Malaita — Fig. 1B), the Central Province, and...oceanic basalts (Hughes and Turner, 1976). The island of Malaita (Fig. 1B) is geologically distinct from |  | | Book | | They reveal that, like other Archean cratons, this region is underlain by a very refractory, melt-depleted...reveals that these samples are ancient fragments of island arc basalts that were once at the Earth's surface...British Columbia, Vancouver, British Columbia, Canada V6T 1Z1 Received 12 March 1998; received in revised...is possible only through xenoliths erupted in kimberlite magmas and it is often unclear to what 0024-4937/99/$...coincidence of L with the depth at which deep seated kimberlite xenoliths are believed to originate. Gaherty |  | | Journal (article/letter/editorial) | | of a Mantle Orthopyroxenite from the Udachnaya Kimberlite Dmitriy I. Rezvukhin 1, * , Taisia A. Alifirova...orthopyroxenite from the Udachnaya-East kimberlite pipe, Daldyn kimberlite field, Siberian platform. Epigenetic...magnetoplumbite and hollandite groups), carbonates (calcite, dolomite), sulfides (pentlandite, djerfisherite...deep-seated mantle metasomatism, infiltration of a kimberlite-related melt and late post-emplacement hydrothermal...alterations. The reaction of orthopyroxene with the kimberlite-related melt has led to orthopyroxene dissolution |  | Lebedeva, Nataliya M., Nosova, Anna A., Kargin, Alexey V., Larionova, Yulia O., Sazonova, Liudmila V., Tikhomirova, Yana S. (2020) Sr–Nd–O isotopic evidence of variable sources of mantle metasomatism in the subcratonic lithospheric mantle beneath the Grib kimberlite, northwestern Russia. Lithos, 376. 105779pp. doi:10.1016/j.lithos.2020.105779 | Journal (article/letter/editorial) | | subcratonic lithospheric mantle beneath the Grib kimberlite, northwestern Russia Nataliya M. Lebedeva a,b...Available online 19 September 2020 Keywords: Kimberlite Mantle xenoliths PIC Mantle metasomatism Rb-Sr...clinopyroxene-phlogopite rocks from the Grib kimberlite in the Arkhangelsk diamond province in northwestern...metasomatism took place during the interaction of kimberlite melts with SCLM that contained mica-amphibol...70486–0.70813) that is significantly higher than the kimberlite values and a circa-chondritic εNd (−0.1 − +1 |  | | 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 authors’...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 |  | | Book | | Note especially the lack of mineralization in the region of the Dow Meadow Depression (Figure 2.11). A black-and-white...core of massive sulfide in pegmatoid from the same region as in (a). Cast of surrounding pegmatoidal minerals...anomalously low compared with mid-ocean ridge, ocean island and flood basalts (800–1,500; e.g., Wallace and...non-volatile incompatible elements such as K2O. Ocean Island ‘hot spot’ basalts generally overlap with MORB...total Fe concentration. In contrast, some ocean island basalts can contain up to 0.3 wt.% S without significant |  | | Book | | country in which to carry out fieldwork. A whole new region of the world to get to grips with, a new craton...Greenstone Belt in west Greenland and to examine, in a region of superb exposure, what is perhaps the most ancient...southern part of the Superior province in Canada. This region shows a west to east transition from a... Country Craton Age (Ga) Features Abitibi Canada Superior Pd Belingwe Zimbabwe Zimbabwe 2...mapping in greenstone belts such as Abitibi in Canada has demonstrated that “modernstyle” tectonic processes |
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