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3D density and magnetic models of the Mid-Norwegian continental marginNormal access

Authors: Y. Maystrenko, L. Gernigon, A. Nasuti and O. Olesen
Event name: 16th International Conference on Geoinformatics - Theoretical and Applied Aspects
Session: Geological Modeling
Publication date: 15 May 2017
DOI: 10.3997/2214-4609.201701831
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.63Mb )
Price: € 20

An integrated 3D density/magnetic modelling has been carried out in the framework of the Crustal Onshore-Offshore Project (COOP2 project). We have made this modelling in order to reveal the regional structural pattern of the Mid-Norwegian continental margin and adjacent areas. Construction of the 3D density/magnetic model has been carried out by use of recently published/released structural data. The 3D density and magnetic modelling itself has been performed using the software IGMAS+ (the Interactive Gravity and Magnetic Application System). The obtained lithosphere-scale 3D structural model represents a first-order approximation of the geometries of the sedimentary infill as well as of the underlying crystalline crust and lithospheric mantle beneath the area under consideration. The configuration of the modelled crystalline crust is consistent with the long-wavelength components of the observed gravity field over the Mid-Norwegian continental margin and adjacent continent. Moreover, the results of the 3D magnetic modelling demonstrate that the 3D density/structural model has to be sub-divided into crustal blocks with different magnetic properties, indicating that these magnetically-derived smaller crustal blocks could lithologically differ from the rest of the initially density-based larger layers.

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