Multi-scale 4-dimensional geological modelling of the Gällivare area
|Coordinator||Luleå tekniska universitet - Institutionen för samhällsbyggnad och naturresurser|
|Funding from Vinnova||SEK 4 700 000|
|Project duration||September 2013 - September 2017|
|Venture||The strategic innovation programme for mining and metal recovery – STRIM|
Purpose and goal
The primary purpose of this research project was to increase the understanding of structural geometries, relations and controls on ore formation and subsequent deformation of ore bodies in the Gällivare area. Based on structural geological field work in combination with geochemistry, radiometric dating and geophysical modeling, geological 3D-models and conceptual 4D-models have been constructed. Through this we managed to get better insights into the regional tectonic history, local ore forming processes and subsequent deformation of ore bodies.
Expected results and effects
The project managed to unravel the structural geometries in the Gällviare area and to visualize them in 3-dimensional models. The project could also show the factors that controlled ore formation and deformation in the area and succeded in re-interpreting ore-controlling deformation zones. This leads to more focused exploration activities in the Gällivare area. New areas with high prospectivity have been identified. Results also support production-related issues in Malmberget, Svappavaara and Aitik through improved predictability of structures.
Planned approach and implementation
During the course of the project the project has been divided into four sub-projects: 1. Regional, semi-regional and local structural relations and structural control of ore deposits in the Gällivare area, 2. regional, semi-regional and local reinterpretation of geophysical data, 3. Geochemical and geochronological analysis, 4. Multi-scale geological 3D and 4D modeling. The prospectivity of the area has not been modeled in 3D due to a lack of sufficient data but was performed at a conceptual level. The overall layout of the project has been largely followed.