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Deep massive sulphide exploration using 2D and 3D geoelectrical and induced polarization data in Skellefte mining district, northern Sweden
Luleå tekniska universitet, Geovetenskap och miljöteknik.
Luleå tekniska universitet, Geovetenskap och miljöteknik.
Luleå tekniska universitet, Geovetenskap och miljöteknik.ORCID iD: 0000-0002-1629-2920
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences. Luleå tekniska universitet.ORCID iD: 0000-0003-3879-3897
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Number of Authors: 5
2016 (English)In: Geophysical Prospecting, ISSN 0016-8025, E-ISSN 1365-2478, Vol. 64, no 6, p. 1602-1619Article in journal (Refereed) Published
Abstract [en]

Geoelectrical and induced polarization data from measurements along three profiles and from one 3D survey are acquired and processed in the central Skellefte District, northern Sweden. The data were collected during two field campaigns in 2009 and 2010 in order to delineate the structures related to volcanogenic massive sulphide deposits and to model lithological contacts down to a maximum depth of 1.5 km. The 2009 data were inverted previously, and their joint interpretation with potential field data indicated several anomalous zones. The 2010 data not only provide additional information from greater depths compared with the 2009 data but also cover a larger surface area. Several high-chargeability low-resistivity zones, interpreted as possible massive sulphide mineralization and associated hydrothermal alteration, are revealed. The 3D survey data provide a detailed high-resolution image of the top ∼450 m of the upper crust around the Maurliden East, North, and Central deposits. Several anomalies are interpreted as new potential prospects in the Maurliden area, which are mainly concentrated in the central conductive zone. In addition, the contact relationship between the major geological units, e.g., the contact between the Skellefte Group and the Jörn Intrusive Complex, is better understood with the help of 2010 deep-resistivity/chargeability data. The bottommost part of the Vargfors basin is imaged using the 2010 geoelectrical and induced polarization data down to ∼1-km depth.

Place, publisher, year, edition, pages
2016. Vol. 64, no 6, p. 1602-1619
National Category
Geophysics Geology
Research subject
Exploration Geophysics; Ore Geology
Identifiers
URN: urn:nbn:se:uu:diva-327704DOI: 10.1111/1365-2478.12363ISI: 000386158100014Local ID: ebf80035-8141-4c62-94db-d97a3d1a5641OAI: oai:DiVA.org:uu-327704DiVA: diva2:1131085
Note

Validerad; 2016; Nivå 2; 2016-11-21 (andbra)

Available from: 2016-09-29 Created: 2017-08-11

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Rasmussen, Thorkild MaackWeihed, Pär
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