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| Titel |
Crustal 3-D geometry of the Kristineberg area (Sweden) with implications on VMS deposits |
| VerfasserIn |
P. Skyttä, T. Bauer, T. Hermansson, M. Dehghannejad, C. Juhlin, M. García Juanatey, J. Hübert, P. Weihed |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1869-9510
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| Digitales Dokument |
URL |
| Erschienen |
In: Solid Earth ; 4, no. 2 ; Nr. 4, no. 2 (2013-10-31), S.387-404 |
| Datensatznummer |
250084941
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| Publikation (Nr.) |
 copernicus.org/se-4-387-2013.pdf |
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| Zusammenfassung |
| Structural analysis of the Palaeoproterozoic volcanogenic massive sulfide
(VMS) hosting Kristineberg area, Sweden, constrained by existing
magnetotelluric (MT) and seismic reflection data, reveals that the complex
geometry characterized by non-cylindrical antiformal structures is due to
transpression along the termination of a major high-strain zone. Similar
orientations of the host rock deformation fabrics and the VMS ore lenses
indicate that the present-day geometry of the complex VMS deposits in the
Kristineberg area may be attributed to tectonic transposition. The tectonic
transposition was dominantly controlled by reverse shearing and related
upright to overturned folding, with increasing contribution of strike-slip
shearing and sub-horizontal flow towards greater crustal depths. Furthermore,
the northerly dip of the previously recognized subsurface crustal reflector
within the Kristineberg area is attributed to formation of crustal
compartments with opposite polarities within the scale of the whole Skellefte
district. The resulting structural framework of the main geological units is
visualized in a 3-D model which is available as a 3-D PDF document through
the publication website. |
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