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TitleFeasibility study for using high-resolution seismic methods to estimate kimberlite deposit volumes at the Snap Lake diamond mine, Northwest Territories
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorSnyder, DORCID logo; Bellefleur, GORCID logo
SourceGeological Survey of Canada, Current Research (Online) no. 2005-C3, 2005, 11 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Mediaon-line; digital
File formatpdf
ProvinceNorthwest Territories
AreaSnap Lake
Lat/Long WENS-111.0000 -110.5000 63.7500 63.5000
Subjectseconomic geology; geophysics; kimberlites; diamond; mineral occurrences; geophysical surveys; seismic surveys; seismic resolution; feasibility studies; seismic velocities; velocity surveys; Slave Craton; Defeat suite
Illustrationssketch maps; seismic profiles; seismic maps
Released2005 07 01
AbstractAnovel, ultra-high-resolution application of crossborehole seismology was tested at the Snap Lake diamond mine of De Beers Canada Inc. to assess whether the relatively thin kimberlite dyke that hosts the diamonds could be mapped underground with sufficient resolution to estimate accurately its volume and to guide mining. Subsequent mining and geological mapping within the test panel demonstrated that the technique was able to map the top and bottom surfaces of the dyke and to identify ramps and pinch-outs of the dyke as well as crosscutting fracture planes. In planning of the present test, De Beers Canada Inc. was advised to also trial two other geophysical methods beside the explosive sources used here. Comparison with higher frequency vibrating seismic and radar sources suggests that radar is the most effective technique in this specific application.

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