| Title | Mapping the mantle lithopshere for diamond potential |
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| Author | Snyder, D B ;
Bostock, M G; Lockhart, G D |
| Source | 8th International Kimberlite Conference: extended abstract; 2003, 4 pages |
| Links | The POLARIS Consortium
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| Image |  |
| Year | 2003 |
| Alt Series | Earth Sciences Sector, Contribution Series 20060713 |
| Meeting | Eighth International Kimberlite Conference; Victoria, British Columbia; CA; June 22-27th, 2003 |
| Document | book |
| Lang. | English |
| Media | CD-ROM |
| Related | This publication is related to Mapping the mantle
lithopshere for diamond potential using teleseismic methods
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| File format | pdf |
| Province | Northwest Territories |
| NTS | 75E; 75I; 75J; 75K; 75L; 75M; 75N; 75O; 75P; 76; 77A; 77B; 85F; 85G; 85H; 85I; 85J; 85K; 85N; 85O; 85P; 86A; 86B; 86C; 86F; 86G; 86H; 86I; 86J; 86K; 86N; 86O; 86P |
| Area | Great Slave Lake; Yellowknife; Coronation Gulf |
| Lat/Long WENS | -117.0000 -105.0000 69.0000 61.0000 |
| Subjects | economic geology; geochemistry; igneous and metamorphic petrology; geophysics; sedimentology; diamond; mineral deposits; kimberlites; till deposits; tills; aeromagnetic interpretation; aeromagnetic
surveys; drill core analyses; drilling; drillholes; exploration; mineral exploration; magnetotelluric field; magnetotelluric interpretations; magnetotelluric surveys; xenoliths |
| Illustrations | schematic cross-sections; profiles |
| Released | 2003 01 01 |
| Abstract | Diamond deposits are typically identified in four stages: (1) regional targeting in which a region's potential is assessed, often by grid till sampling for indicator minerals or global seismology; (2)
kimberlite detection in which till sampling and high resolution aeromagnetic surveys locate individual deposits; (3) deposit delineation in which drill hole core sampling determines a specific deposit's volume and lithology; and (4) evaluation in
which bulk sampling establishes a deposit's worth and its feasibility to be mined. Results from the past few decades indicate that globally, for every 1000 candidate magnetic anomalies identified, 100 are kimberlites, ten contain gem-quality diamonds
and one is economic to mine in Canada's North. The diamond exploration industry needs discriminating tools to reduce risks at all of these stages. Seismic techniques can provide 3-D maps of key physical properties in the mantle to 700 km depth to
help accomplish stage 1 (Nolet et al., 1994; Bostock, 1999). These results can then be used in conjunction with conductivity maps derived from magneto-telluric soundings and 'ground truth' of actual rock types provided by rare xenolith samples from
kimberlites. At present our efforts are concentrated in the central Slave craton of the NWT, Canada, because of the strong geological, geophysical and logistical base currently available. Once a velocity/property model is established in the Slave
craton, this innovative, 1st-order exploration tool can be applied throughout Canada and globally. |
| GEOSCAN ID | 223596 |
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