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Sökning: L4X0:2365 0559 > (2015)

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  • Bauer, Tobias, et al. (författare)
  • The Skellefte District
  • 2015
  • Ingår i: 3D, 4D and Predictive Modelling of Major Mineral Belts in Europe. - Encyclopedia of Global Archaeology/Springer Verlag. ; s. 93-121
  • Bokkapitel (refereegranskat)abstract
    • <p>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.</p>
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  • Weihed, Pär (författare)
  • Introduction
  • 2015
  • Annan publikation (övrigt vetenskapligt)abstract
    • <p>This book is the result of 3- and 4-D modelling as part of the EU FP7 Promine project, which for the first time in Europe addressed the issue of pan-European 3- and 4 D geological models as a basis for mineral exploration and extraction under cover. The models that have been established cover four major mineral belts in Europe: Skellefte-Vihanti-Pyhäsalmi in Fennoscandia, Forsudetic monocline in Poland-Germany, the Iberian Pyrite Belt and the Ozza Morena zone in Spain-Portugal and the Hellenic belt of northern Greece. The basic principle for the modelling is to combine geological information from the surface, drill cores/holes, underground exposures with geophysical data, both airborne, ground and drill hole measurements. In most cases all existing and acquired data were imported and visualized in the gOcad software package. For some belts also uncertainty models are presented. 4-Dmodelling added the time aspect to the 3-Dmodels and aimed at visualizing the geological evolution of the district. 3-D predictivity maps are also presented using some different principles for the predictive models. We show in this book that it is possible to build robust 3-D models of major mineral belts in Europe and by using different approaches it is also possible to carry out 4-D modelling to help exploration industry with better targeting. The 3-D predictive models for the mineral belts clearly show the potential of undiscovered resources in various parts of Europe. The results from the modelling in the Promine project is a proof of concept, and we hope that this book serves as an inspiration for future, more full scale, projects that could be developed to contribute to a sustainable supply of metals to the society.</p>
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5.
  • Weihed, Pär, 1959- (författare)
  • Introduction
  • 2015
  • Annan publikation (övrigt vetenskapligt)abstract
    • <p>This book is the result of 3- and 4-D modelling as part of the EU FP7 Promine project, which for the first time in Europe addressed the issue of pan-European 3- and 4 D geological models as a basis for mineral exploration and extraction under cover. The models that have been established cover four major mineral belts in Europe: Skellefte-Vihanti-Pyhäsalmi in Fennoscandia, Forsudetic monocline in Poland-Germany, the Iberian Pyrite Belt and the Ozza Morena zone in Spain-Portugal and the Hellenic belt of northern Greece. The basic principle for the modelling is to combine geological information from the surface, drill cores/holes, underground exposures with geophysical data, both airborne, ground and drill hole measurements. In most cases all existing and acquired data were imported and visualized in the gOcad software package. For some belts also uncertainty models are presented. 4-Dmodelling added the time aspect to the 3-Dmodels and aimed at visualizing the geological evolution of the district. 3-D predictivity maps are also presented using some different principles for the predictive models. We show in this book that it is possible to build robust 3-D models of major mineral belts in Europe and by using different approaches it is also possible to carry out 4-D modelling to help exploration industry with better targeting. The 3-D predictive models for the mineral belts clearly show the potential of undiscovered resources in various parts of Europe. The results from the modelling in the Promine project is a proof of concept, and we hope that this book serves as an inspiration for future, more full scale, projects that could be developed to contribute to a sustainable supply of metals to the society.</p>
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