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dc.contributor.authorNasuti, Aziznb_NO
dc.date.accessioned2014-12-19T12:16:48Z
dc.date.available2014-12-19T12:16:48Z
dc.date.created2013-02-20nb_NO
dc.date.issued2013nb_NO
dc.identifier606787nb_NO
dc.identifier.isbn978-82-471-4142-7 (printed ver.)nb_NO
dc.identifier.isbn978-82-471-4143-4 (electronic ver.)nb_NO
dc.identifier.urihttp://hdl.handle.net/11250/239940
dc.description.abstractMøre-Trøndelag Fault Complex (MTFC) is one of the most prominent fault complexes in Scandinavia. The MTFC appears to have controlled the tectonic evolution of Mid Norway and its shelf for the past 400 Myr and has experienced repeated reactivation during Paleozoic (Devonian to Permian), Mesozoic (Jurassic) and presumably Cenozoic times. Geological and geophysical observations demonstrate that the MTFC exerted a strong control in shaping the basins offshore but also in influencing the development of the landscape onshore, and continues today in modifying the regional stress pattern. Regional gravity and aeromagnetic data are used to map regional-scale faults and, in particular, to delineate the main geophysical features related to the MTFC. The advantage of potential field data is to provide an almost continuous coverage and to tie bedrock mapping onshore to seismic interpretation offshore. Potential field transformations were applied to focus on the regional and deep-seated structures in order to extract new geological information. Also the tilt derivative technique (TDR) is applied to gravity and magnetic data with the aim of enhancing linear trends. The results indicate the possible onshore-offshore links of large scale structural elements like the MTFC and late-Caledonian detachments (e.g. Kollstraumen Detachment). The locations of different segments of the MTFC are detected and possible new faults/lineaments are depicted. Correlating petrophysical data with gravity and magnetic maps explains the influence of the MTFC on the deformation and mineralization of bedrock along its strike. In addition, the structural pattern seen in the enhanced lineaments is diagnostic for the sinistral strike-slip movements that are known to have occurred in Devonian time along the MTFC. This confirms the important role of the MTFC in the tectonic setting and geological evolution of Mid Norway. Regional gravity and aeromagnetic data are used for mapping the MTFC at the regional scale, while new and multidisciplinary geophysical data sets such as 2D resistivity, gravity, magnetic and seismic profiles are utilized to characterize one of the fault zones in a much more focused area. Rock sampling and petrophysical measurements on densities, suceptibilities and seismic velocities constrain the geophysical models. 2D models are built from selected local profiles in order to providenb_NO
dc.languageengnb_NO
dc.publisherNorges teknisk-naturvitenskapelige universitet, Fakultet for ingeniørvitenskap og teknologi, Institutt for petroleumsteknologi og anvendt geofysikknb_NO
dc.relation.ispartofseriesDoktoravhandlinger ved NTNU, 1503-8181; 2013:25nb_NO
dc.titleUsing geophysical methods to characterize the Møre- Trøndelag Fault Complex, Mid Norwaynb_NO
dc.typeDoctoral thesisnb_NO
dc.contributor.departmentNorges teknisk-naturvitenskapelige universitet, Fakultet for ingeniørvitenskap og teknologi, Institutt for petroleumsteknologi og anvendt geofysikknb_NO
dc.description.degreePhD i petroleumsteknologi og anvendt geofysikknb_NO
dc.description.degreePhD in Petroleum Engineering and Applied Geophysicsen_GB


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