Structural Geological Model of the Kaunisvaara Mining District, Norrbotten, Sweden
(2024) In Dissertations in Geology at Lund University GEOR02 20241Department of Geology
- Abstract
- The Kaunisvaara mining district, located in Norrbotten in northern Sweden, hosts several iron ore deposits, of which Tapuli and Sahavaara are the most economically important. The bedrock in the region has been subjected to several major deformation phases, which has created a complex structural pattern on a regional and local scale. Previous structural geological studies of the Tapuli deposit have mainly focused on a structural control on ore distribution and grade variations. This project, however, aims to provide a structural geological model of the mining area by emphasising brittle deformation. The main work was divided into two stages. The first stage included interpretations of pre-existing geophysical data (i.e., lineament... (More)
- The Kaunisvaara mining district, located in Norrbotten in northern Sweden, hosts several iron ore deposits, of which Tapuli and Sahavaara are the most economically important. The bedrock in the region has been subjected to several major deformation phases, which has created a complex structural pattern on a regional and local scale. Previous structural geological studies of the Tapuli deposit have mainly focused on a structural control on ore distribution and grade variations. This project, however, aims to provide a structural geological model of the mining area by emphasising brittle deformation. The main work was divided into two stages. The first stage included interpretations of pre-existing geophysical data (i.e., lineament analysis), aimed to outline the structural framework in a semi-regional perspective. The lineament analysis yielded 217 interpreted lineaments, showcasing at least two dominant structural trends, and indications of significant fluid flows in the Sahavaara deposit area. During the second stage, detailed structural measurements were collected by applying software-based operations to a point cloud-generated 3D model of the Tapuli mining pit. The approach, centred on digitizing and measuring fault planes, resulted in 137 structural measurements classified into three main orientations. The outcome of the respective analyses exhibited mostly consistent findings, reinforcing the observed dominant orientations across the geological formations and scales, and aligning well with previous studies. Indicated major fluid flows in the Sahavaara area remain inconclusive, emphasising the preliminary nature of interpretations based on geophysical data and highlighting the necessity of field verification for conclusive evidence. While proving to be a viable approach, the extraction of structural measurements from a point cloud-generated 3D model demonstrated inherent constraints when applied to brittle deformation in an open mining pit environment. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/9154138
- author
- Svedu Husén, Simon LU
- supervisor
- organization
- course
- GEOR02 20241
- year
- 2024
- type
- H2 - Master's Degree (Two Years)
- subject
- keywords
- structural geology, brittle deformation, lineament analysis, photogrammetry, point cloud
- publication/series
- Dissertations in Geology at Lund University
- report number
- 677
- language
- English
- id
- 9154138
- date added to LUP
- 2024-05-27 09:18:42
- date last changed
- 2024-05-27 09:18:42
@misc{9154138,
abstract = {{The Kaunisvaara mining district, located in Norrbotten in northern Sweden, hosts several iron ore deposits, of which Tapuli and Sahavaara are the most economically important. The bedrock in the region has been subjected to several major deformation phases, which has created a complex structural pattern on a regional and local scale. Previous structural geological studies of the Tapuli deposit have mainly focused on a structural control on ore distribution and grade variations. This project, however, aims to provide a structural geological model of the mining area by emphasising brittle deformation. The main work was divided into two stages. The first stage included interpretations of pre-existing geophysical data (i.e., lineament analysis), aimed to outline the structural framework in a semi-regional perspective. The lineament analysis yielded 217 interpreted lineaments, showcasing at least two dominant structural trends, and indications of significant fluid flows in the Sahavaara deposit area. During the second stage, detailed structural measurements were collected by applying software-based operations to a point cloud-generated 3D model of the Tapuli mining pit. The approach, centred on digitizing and measuring fault planes, resulted in 137 structural measurements classified into three main orientations. The outcome of the respective analyses exhibited mostly consistent findings, reinforcing the observed dominant orientations across the geological formations and scales, and aligning well with previous studies. Indicated major fluid flows in the Sahavaara area remain inconclusive, emphasising the preliminary nature of interpretations based on geophysical data and highlighting the necessity of field verification for conclusive evidence. While proving to be a viable approach, the extraction of structural measurements from a point cloud-generated 3D model demonstrated inherent constraints when applied to brittle deformation in an open mining pit environment.}},
author = {{Svedu Husén, Simon}},
language = {{eng}},
note = {{Student Paper}},
series = {{Dissertations in Geology at Lund University}},
title = {{Structural Geological Model of the Kaunisvaara Mining District, Norrbotten, Sweden}},
year = {{2024}},
}