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Kelvin And Faraday Kimberlite Emplacement Geometries And Implications For Subterranean Magmatic Processes

Автор Wayne Barnett, Casey Hetman, Ron Uken, Michael Stubley, Chris Hrkac, Tom McCandless

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Kelvin And Faraday Kimberlite Emplacement Geometries And Implications | SRK Consulting

Авторы

Wayne BarnettCasey HetmanRon Uken

Michael Stubley

Chris Hrkac

Tom McCandless

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Июль 2018 г
Mineralogy and Petrology

The Kennady North Project kimberlites (Northwest Territories of Canada) comprises multiple shallow dipping dykes and several volcaniclastic bodies that have an unusual shallow plunging geometry and complex "pipe" shapes that are termed chonoliths. The detailed exploration of the entire system provides exceptional evidence for subterranean volcanic conduit growth processes. The possible processes leading to the development of the kimberlite bodies are discussed, with emphasis on the importance of the subsurface intrusive system geometry and the local stress tensor. Emplacement into a locally compressive stress regime (i.e. σ1 and σ2 inclined at a low angle to surface) could change the kimberlite emplacement geometries to that observed at Kennady North. Models are proposed for the development of the chonoliths, to emphasize aspects of the growth of kimberlite systems that are not well understood. The conclusions challenge or evolve current emplacement models and should influence kimberlite exploration and resource definition assumptions.

The final publication is available at https://link.springer.com/article/10.1007/s00710-018-0621-8

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Авторы

Wayne Barnett | Principal Structural Geologist | Vancouver, Canada

Wayne Barnett

Principal Structural Geologist

Wayne has over 20 years of international consulting experience. Over the last six years, he has striven to develop improved tools for electronic geological pattern mapping.

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Casey Hetman | Corporate Consultant (Geology) | Vancouver, Canada

Casey Hetman

Corporate Consultant (Geology)

Casey is a professional geologist with over 25 years of experience working on a variety of primary diamond deposits, Archaean lode gold systems, and epithermal gold/silver projects globally.

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Ron Uken | Principal Consultant, Structural Geology | Vancouver, Canada

Ron Uken

Principal Structural Geologist

Ron’s expertise is in structural mapping, the interpretation of complex structural terrains, structural controls on mineralisation, and the application of structure for geotech.

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