By Pär Weihed
This ebook offers the result of the key ecu venture Promine. For the 1st time there's now a ecu database to be had on mineral deposits, in addition to 3D, 4D and predictive types of significant mineral belts in Europe: Fennoscandia (Skellefteå and Vihanti-Pyhäsalmi), the Fore-Sudetic basin (Kupferschiefer deposits in Poland and Germany), the Hellenic belt in northern Greece, and the Iberian Pyrite belt and Ossa Morena sector in Spain and Portugal. The ebook additionally describes the modelling options utilized and the way varieties of software program are used for 3- and 4-dimensional modelling. in addition, basic descriptions of ways to construct the database constitution of 3-dimensional geological info are supplied and either second and 3D predictive types are awarded for the most mineral belts of Europe.
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Extra resources for 3D, 4D and Predictive Modelling of Major Mineral Belts in Europe
Group 10: Pegmatite (Fig. 5b) Theoretical commodity association: Nb, Ta, Sn, Li, Be, (U, REE) This group is related to the igneous group as it represents its peripheral and shallow expression (Cerný and Ercit 2005). This explains the very similar distribution of deposits of both groups. In the Fennoscandian Shield, pegmatite deposits are related to Palaeoproterozoic (Svecokarelian) magmatism in southern Sweden and Finland, and Sveconorwegian (end of Mesoproterozoic) magmatism to the southwest of the shield (Sweden, Norway).
This method requires, on a speciﬁc area, a set of training points (mineral occurrences) and a coverage of polygons (geological map). Where sufﬁcient data are available, it can be applied to estimate the relative importance of evidence by statistical means. Calculating the WofE on a geological map, covering several geological formations, is similar to using a multi-class evidential theme. The calculation of WofE characterizes each formation by three numerical values: W+, W− and C (see Bonham-Carter (1994) and Kemp et al.
These districts contain large world-class iron deposits, with a typical magnetite-apatite paragenesis and sodium alteration. These districts also contain copper sulphide deposits that are interpreted as D. Cassard et al. VMS (Viscaria) or porphyry (Aitik; Wanhainen et al. 2005). More limited IOCG style deposits are also known in other parts of Europe. Some Fe (Fe–Cu) IOCG style deposits are identiﬁed in the Ossa Morena Zone in southwestern Iberia. They are mesozonal albitite-related magnetite deposits and are interpreted (Tornos et al.
3D, 4D and Predictive Modelling of Major Mineral Belts in Europe by Pär Weihed