Otto matic 3d4/19/2023 This study used a combination of marine, land, and EGM2008 gravity data and modeled them with IGMAS+, Interactive Gravity and Magnetic Application System. This model includes sedimentary sequences, crustal thickness, Moho topography, and high-velocity lower crust expansion in the region and shows the tectonic structures of the study area. ![]() Previous seismic / non-seismic results have been used to constrain the model and reduce its degree of freedom. For this purpose, a three-dimensional model of the crustal structures based on gravity data forward modeling in the study area has been presented. This area is one of the most attractive regions for Geoscientists in the last decades due to its complicated geological structures caused by different tectonic events. The current study aims to estimate the depth and topography of the Moho discontinuity in the southwestern part of the Baltic Sea, including parts of the central European system, the Trans-European Suture Zone, Caledonian Crustal Suture, and the Ringkobing-Fyn High. Estimating the Moho depth and studying its lateral changes is one of the important goals of geophysical studies. The Moho discontinuity is a boundary between the crust and upper mantle that reveals the difference between them with changes in seismic velocity, density, chemical structure, and constituents. Timan-Pechora region and are mostly the result of Timanian orogenesis. Sea, the crustal units are linked to the onshore geology of the ![]() That mimic the arcuate shape of Novaya Zemlya. The basement isĬharacterized by an alternation of high-magnetic and low-magnetic units Mega-sag East Barents Basin, is an assemblage of Precambrian rocksĭeformed during the Timanian and Uralian orogenies. To the east, the basement underlying the large Not corresponding entirely to the island of Svalbard) was locatedīetween Baltica and Laurentia and became attached to the shelf during ![]() Geodynamic scenario in which an independent crustal block (Barentsia, The largest part of the North Barents Sea isĭistinguished from the rest of the shelf by its low-magnetic propertiesĪnd its large crustal thickness. Uppermost allochthonous terranes that can be linked with the major We interpret the differentĬrustal blocks in terms of distinctive lower, middle, upper and ![]() Is an aggregation of allochthonous Caledonian terranes and autochthonousĪrchaean and Palaeoproterozoic complexes. Upper crust is considered as the major source of the magnetic anomaliesĪnd has been divided into a number of units characterized by constantĭensities and magnetization, which show a good correlation with the main (Cretaceous-Cenozoic, Triassic-Jurassic, Late Palaeozoic and deeplyīuried sediments), upper and lower basement and an upper mantle. Variations associated with depth and time of deposition The set upĬonsists of a water layer, sedimentary units that incorporate density Is based on a large number of seismic and petrophysical data. Results from the modelling of gravity and magnetic field anomalies and Highlights the basement properties and crustal setting. We present a new 3D geophysical model for the Barents Sea that
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