VGP34C:
Origin of Cratonic Mantle Lithosphere, Diamonds, and Deeply Sourced Volatile-Rich Melts: Processes and Timescales II Posters

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Session ID#: 5803

Session Description:
Canada has emerged as the third largest diamond producer over the past 15 years, and this development spawned a new era of studies on the formation of cratonic lithosphere, kimberlitic magmatism, and diamonds within the international geosciences community. In parallel, significant advancements of research methods have been instrumental for an improved understanding of processes and timescales of craton stabilization and modification, including conditions that trigger diamond formation and kimberlite eruptions. The now available information about the deep mantle roots of ancient continental nuclei, including the Canadian Shield, enables us to challenge and further develop concepts of craton geology.

We welcome contributions that investigate deep continental lithosphere through mantle-derived xenolith and diamond studies, as well as by geophysical means. We invite studies pertinent to the formation and evolution of volatile-rich magmas such as kimberlites and carbonatites, including their potential to modify cratonic mantle. Studies advancing diamond exploration techniques are also welcome.

OSPA Liaison:  Sebastian Tappe, University of the Witwatersrand, School of Geosciences, Johannesburg, South Africa
Chairs:  Sebastian Tappe, University of the Witwatersrand, School of Geosciences, Johannesburg, South Africa, Yana Fedortchouk, Dalhousie University, Department of Earth Sciences, Halifax, NS, Canada and Antonio Simonetti, University of Notre Dame, Notre Dame, IN, United States
Primary Convener:  Sebastian Tappe, De Beers Group Exploration, Johannesburg, South Africa
Conveners:  Yana Fedortchouk, Dalhousie University, Halifax, NS, Canada and Antonio Simonetti, University of Notre Dame, Notre Dame, IN, United States
Index Terms:

1025 Composition of the mantle [GEOCHEMISTRY]
1037 Magma genesis and partial melting [GEOCHEMISTRY]
1038 Mantle processes [GEOCHEMISTRY]
1040 Radiogenic isotope geochemistry [GEOCHEMISTRY]
Co-Sponsor(s):
  • MD - Mineral Deposits and Ore Minerals
  • PG - Precambrian Geology
  • SE - Solid Earth
  • T - Tectonophysics

Abstracts Submitted to this Session:

 
VGP34C-0421
187Re- 187Os Nuclear Geochronometry of Diamond Sulphide Inclusions: Constraining the Chemical Evolution of the SCLM (33194)
Goetz Roller, Organization Not Listed, Washington, DC, United States
 
VGP34C-0422
Salty kimberlites, magmatic or contaminated? Insights from sulfur isotopes on the source of alkalies in kimberlite magmas (35651)
Yumi C. Kitayama1, Emilie Thomassot1, Elisabeth d'Eyrames1, Thomas Rigaudier Dr1, Alexander V. Golovin2, Andrey V. Korsakov2 and Albert Galy3, (1)CRPG Centre de Recherches Pétrographiques et Géochimiques, Vandoeuvre-Les-Nancy, France, (2)V.S. Sobolev Institute of Geology and Mineralogy, Novosibirsk, Russia, (3)Université de Lorraine - CNRS, CRPG Centre de Recherches Pétrographiques et Géochimiques, Vandœuvre-lès-Nancy, France
 
VGP34C-0424
Micro-morphology and Resorption of Diamonds from Snap Lake and Ekati Mine Kimberlites (Canada) as an Indicator of the Fluid and Emplacement History (35289)
Zhuoyuan Li1, Yana Fedortchouk1, Ingrid Chinn2 and Alexandrina Fulop3, (1)Dalhousie University, Department of Earth Sciences, Halifax, NS, Canada, (2)DeBeers Exploration, Johannesburg, South Africa, (3)De Beers Canada, Kimberlite Petrology Unit, Toronto, ON, Canada
 
VGP34C-0425
An in situ Technique for U-Th-Pb-He Chronometry with Applications to Diamond Exploration (34741)
Noreen Evans1, Brent McInnes2, Brad McDonald1, Martin Danišík3, Michael Shelley4 and Pieter Vermeesch5, (1)Curtin University, Applied Geology, Perth, Australia, (2)Curtin University, Applied Physics, Perth, Australia, (3)Curtin University, John de Laeter Centre, Perth, Australia, (4)Laurin Technic Pty. Ltd., Canberra, Australia, (5)University College London, London, United Kingdom
See more of: Volcanology, Geochemistry, and Petrology