Crustal geometry of the central Skellefte district, northern Sweden - constraints from reflection seismic investigations
The Palaeoproterozoic Skellefte mining district in Sweden is one of the most important mining districts in Europe. As a part of a 4D geologic modeling project, three new sub-parallel reflection seismic profiles, with a total length of about 95. km, were acquired in the central part of the district....
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/37319 |
| _version_ | 1848755013776572416 |
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| author | Dehghannejad, M. Bauer, T. Malehmir, A. Juhlin, Christopher Weihed, P. |
| author_facet | Dehghannejad, M. Bauer, T. Malehmir, A. Juhlin, Christopher Weihed, P. |
| author_sort | Dehghannejad, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The Palaeoproterozoic Skellefte mining district in Sweden is one of the most important mining districts in Europe. As a part of a 4D geologic modeling project, three new sub-parallel reflection seismic profiles, with a total length of about 95. km, were acquired in the central part of the district. Processed seismic data reveal a series of gentle- to steeply- dipping reflections and a series of diffraction packages. The majority of reflections that extend to the surface can be correlated with geological features either observed in the field or interpreted from the aeromagnetic map. A set of south-dipping reflections represent inferred syn-extensional listric extensional faults that were inverted during subsequent crustal-shortening. Cross-cutting north-dipping reflections are correlated to late-compressional break-back faults. Flat-lying reflections in the central parts of the study area could represent lithological contacts within the Skellefte Group, or the contact between Skellefte Group rocks and their unknown basement. Flat-lying reflections occurring further north are inferred to originate from the top of the Jörn intrusive complex or an intrusive contact within it. So far unknown south- and north-dipping faults have been identified in the vicinity of the Maurliden deposit. Based on the seismic results, a preliminary 3D-model has been created in order to visualize the fault pattern and to provide a base for future 3D/4D modeling in the Skellefte district. |
| first_indexed | 2025-11-14T08:49:33Z |
| format | Journal Article |
| id | curtin-20.500.11937-37319 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:49:33Z |
| publishDate | 2012 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-373192017-09-13T13:38:14Z Crustal geometry of the central Skellefte district, northern Sweden - constraints from reflection seismic investigations Dehghannejad, M. Bauer, T. Malehmir, A. Juhlin, Christopher Weihed, P. The Palaeoproterozoic Skellefte mining district in Sweden is one of the most important mining districts in Europe. As a part of a 4D geologic modeling project, three new sub-parallel reflection seismic profiles, with a total length of about 95. km, were acquired in the central part of the district. Processed seismic data reveal a series of gentle- to steeply- dipping reflections and a series of diffraction packages. The majority of reflections that extend to the surface can be correlated with geological features either observed in the field or interpreted from the aeromagnetic map. A set of south-dipping reflections represent inferred syn-extensional listric extensional faults that were inverted during subsequent crustal-shortening. Cross-cutting north-dipping reflections are correlated to late-compressional break-back faults. Flat-lying reflections in the central parts of the study area could represent lithological contacts within the Skellefte Group, or the contact between Skellefte Group rocks and their unknown basement. Flat-lying reflections occurring further north are inferred to originate from the top of the Jörn intrusive complex or an intrusive contact within it. So far unknown south- and north-dipping faults have been identified in the vicinity of the Maurliden deposit. Based on the seismic results, a preliminary 3D-model has been created in order to visualize the fault pattern and to provide a base for future 3D/4D modeling in the Skellefte district. 2012 Journal Article http://hdl.handle.net/20.500.11937/37319 10.1016/j.tecto.2011.12.021 restricted |
| spellingShingle | Dehghannejad, M. Bauer, T. Malehmir, A. Juhlin, Christopher Weihed, P. Crustal geometry of the central Skellefte district, northern Sweden - constraints from reflection seismic investigations |
| title | Crustal geometry of the central Skellefte district, northern Sweden - constraints from reflection seismic investigations |
| title_full | Crustal geometry of the central Skellefte district, northern Sweden - constraints from reflection seismic investigations |
| title_fullStr | Crustal geometry of the central Skellefte district, northern Sweden - constraints from reflection seismic investigations |
| title_full_unstemmed | Crustal geometry of the central Skellefte district, northern Sweden - constraints from reflection seismic investigations |
| title_short | Crustal geometry of the central Skellefte district, northern Sweden - constraints from reflection seismic investigations |
| title_sort | crustal geometry of the central skellefte district, northern sweden - constraints from reflection seismic investigations |
| url | http://hdl.handle.net/20.500.11937/37319 |