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Imaging Volcanic Stratigraphy Beneath Glacial Cover Using Magnetic Field Methods and PetrophysicsNormal access

Authors: E. Veglio, H. Ugalde, I. Lenauer, C. Bank and B. Milkereit
Event name: 23rd European Meeting of Environmental and Engineering Geophysics
Session: Mining and Mineral Exploration Geophysics
Publication date: 03 September 2017
DOI: 10.3997/2214-4609.201702097
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.19Mb )
Price: € 20

In New Brunswick, Canada, Devonian aged bi-modal volcanic-sedimentary rocks provide a favourable geological setting for base metal exploration. Much of the study area is densely vegetated and covered by glacial sediments of up to 25 meters. A large comprehensive database of geophysical, petrophysical, and petrological information exists for an area of known base metal mineralization. Combined data includes those obtained from airborne, surface, and dril core surveys, producing a range of resolutions and physical rock properties of the study area. The few occurrences of bedrock outcrops on the property confirm occurrences of rhyolites and tuffs, as well as the presence of mineralization. There are no known outcrops of the highly magnetic basalt flows observed in the drill core, identified as a marker unit. The integration of ground magnetic data with magnetic susceptibility measured from drill core was combined to delineate the shallow volcanic stratigraphy beneath cover.

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