Magnetotelluric 2D inversion and joint interpretation of MT, seismic, magnetic and gravity data from Masi, Kautokeino municipality, Finnmark

NGU-RAPPORT
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2019.009
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Forfattere
Mrope, Frida Mathayo
Becken, Michael
Ruud, Bent Ole
Olesen, Odleiv
Johansen, Tor Arne
Brönner, Marco
Gradmann, Sofie
Nasuti, Aziz
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Utgivelsesår
2019
Publikasjonstype
Utgivelsesår
2019
ISSN
0800-3416
Prosjektnr
347100
Summary
Acquisition of Magnetotelluric (MT) data at Masi is a joint venture project between NGU and Westfälische Wilhelms Universitat Münster in Germany. The data was collected in 2015. The main objective is to understand the regional geology in the area and especially the settings of the postglacial Stuoragurra Fault. The project area has been extensively studied and a considerable amount of information about the geology is available. However, most of this information provides only knowledge of the shallow subsurface. Having a range of high to low frequencies, MT data has a great depth of penetration and is hence a useful tool in understanding the deep subsurface.
Interpretation of the resistivity model was done by integrating the geological bedrock map, seismic section, 2D resistivity profiles, resistivity log and magnetic and gravity data. The deep structures observed in the MT model guided the interpretation of the gravity and magnetic data and hence minimized the number of possible models.
Kommune
KAUTOKEINO
Fylke
TROMS OG FINNMARK
Tilgjengelig
NGU-biblioteket
Prosjekt
MINN KGB - Kautokeinogrønnsteinsbeltet i 3D