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TitleDownhole seismic imaging of the Victor kimberlite, James Bay Lowlands, Ontario: a feasibility study
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AuthorBellefleur, G; Matthews, L; Roberts, B; McMonnies, B; Salisbury, M; Snyder, D; Perron, G; McGaughey, J
SourceGeological Survey of Canada, Current Research (Online) no. 2005-C1, 2005, 7 pages, https://doi.org/10.4095/220219
Year2005
PublisherNatural Resources Canada
Documentserial
Lang.English
Mediaon-line; digital
File formatpdf
ProvinceOntario
NTS43B/05; 43B/06; 43B/11; 43B/12; 43B/13; 43B/14; 43G/03; 43G/04
AreaJames Bay Lowlands; Attawapiskat River
Lat/Long WENS-84.0000 -83.0000 53.2500 52.2500
Subjectseconomic geology; geophysics; kimberlites; diamond; sedimentary rocks; geophysical surveys; seismic surveys; seismic interpretations; seismic models; seismic exploration; density logging; seismic velocities; Victor kimberlite; Attawapiskat kimberlite cluster; kimberlite pipes; image analysis; imaging; Paleozoic; Silurian
Illustrationssketch maps; seismic graphs; seismic profiles
Released2005 03 01
AbstractDownhole seismic data were acquired at the Victor kimberlite, in the James Bay Lowlands of Ontario, in order to attempt to produce an image of the pipe at 10 to 300mdepths and, in doing so, to evaluate the applicability of this method in delineating diamond resources. The survey was designed to allow two different imaging strategies, one using shot points located over the kimberlite pipe and the other using shots over the host sedimentary rocks. It was hoped that shot points over the kimberlite would directly image the kimberlite-sedimentary rock contact, whereas shots over the nearby (<250 m) sedimentary rocks would indirectly determine the kimberlite margin by mapping truncations of reflections from the sedimentary layers. Results demonstrate that the indirect mapping approach has potential to define the geometry of the kimberlite at depth.
GEOSCAN ID220219