The Skellefte District

Godkänd; 2015; 20150818 (andbra)
Four-dimensional geological modelling has been conducted in the Palaeoproterozoic Skellefte mining district. 3D-modelling of volcanic-hosted massive sulphide deposits and associated host-rocks has been carried out in multiple scales from deposit to regional scale and is based on a combination of geological and geophysical investigations. A conceptual model founded on unravelling the structural control on sedimentation, volcanism and mineralization and the subsequent deformation patterns, acts as a base for geological modelling. The final 3D-model provides a structural framework in which the mineralizations can be studied by improved understanding of the structural evolution in the mine areas, and by comparing the regional structural patterns versus the form and attitude of ore deposits. Additionally, uncertainty and prospectivity models were constructed showing the distribution of data and the potential of discovering new ore deposits. Subsequent 4D-modelling adds the time aspect to the 3D-models and aims at visualizing and understanding the geological history in the district and as a support for ore targeting. Moreover, adding geological time to the modelling helps gaining confidence about both the conceptual models and the 3D-models. The final 3D- and 4D-models provide a regional three-dimensional context for both industrial and academic activities in the Skellefte district, and aid the understanding of large-scale tectonic processes.

Skyttä, PietariLuleå tekniska universitet,Geovetenskap och miljöteknik(Swepub:ltu)piesky (author)
Hermansson, TobiasBoliden Mines, Boliden, Sweden (author)
Dehghannejad, MahdiehDepartment of Earth Sciences, Uppsala University, Uppsala, Sweden (author)
Tavakoli, SamanLuleå tekniska universitet,Geovetenskap och miljöteknik(Swepub:ltu)samtav (author)
Luleå tekniska universitetGeovetenskap och miljöteknik (creator_code:org_t)

In:3D, 4D and Predictive Modelling of Major Mineral Belts in EuropeCham : Encyclopedia of Global Archaeology/Springer Verlag, s. 93-121

By the author/editor: Bauer, Tobias; Skyttä, Pietari; Hermansson, Tobi ...; Dehghannejad, Ma ...; Tavakoli, Saman

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Geophysics

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