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3D Seismic Surveying in Kevitsa Open Pit Mine
First Quantum Minerals Ltd..
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Geophysics.
First Quantum Minerals Ltd.
2012 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

3D reflection seismic survey was conducted over an areaof about 9 km2 at the Kevitsa Ni-Cu-PGE (platinumgroup elements) deposit, northern Finland. About 1000active receivers and 3000 shots in nine overlappingswaths were used to acquire the data. The principalobjective of the survey was to image major fault andfracture zones at depth. Understanding the geometry ofthese zones is important for designing a steep open-pit formining. Geological structures are complex and a varyingthickness of overburden combined with various weatherconditions during the data acquisition pose the dataprocessing very challenging. However, a carefulprocessing design combined with our experience on thistype of data helped to produce interesting results.Processing results suggest that the 3D seismic survey hasbeen successful in imaging both gently dipping andsteeply dipping reflections as shallow as about 150 m,many of which correlate with fault systems andlithological contacts observed at the surface. Several newtarget areas, bright spots, are identified in the seismicdata that require further investigations for theirmineralization potential.

Place, publisher, year, edition, pages
2012.
National Category
Geophysics
Identifiers
URN: urn:nbn:se:uu:diva-286426DOI: 10.1071/ASEG2012ab310OAI: oai:DiVA.org:uu-286426DiVA: diva2:921522
Conference
ASEG
Available from: 2016-04-20 Created: 2016-04-20 Last updated: 2016-06-29Bibliographically approved

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Publisher's full texthttp://library.seg.org/doi/abs/10.1071/ASEG2012ab310

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Malehmir, Alireza M

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