It involves a discretization of the complicatedĮarth’s surface, which is considered as a fixed boundary. The numerical scheme uses the collocation method with linear basis functions. A direct BEM formulationįor the Laplace equation is applied to get a numerical solution of the linearized fixed gravimetric boundary-value problem. The paper presents a high-resolution global gravity field modelling by the boundary element method (BEM). Mantle upwelling, with a maximum mantle temperature increase aboveĪmbient of ˜50 oC in the north and 90-150 Results indicate temperature-driven breakup magmatism under passive Positive correlation seen elsewhere on the NE Atlantic margins. Mean VP relationship at the eastern margin gives the typical Ultra-slow seafloor spreading occurs at ˜43 Ma, indicating onset Track data shows seafloor spreading rates off the southern JMMCĬomparable to that of the conjugate Møre Margin. Second one closer to the Iceland Plateau is less clear. Velocity and crustal thickening identifies one crustal fragment, while a Southern JMMC is furthermore embedded in a thick igneous crust: Reduced Thickness of 7-9 km in the north, and 12-14 km in the south. Early Eocene breakup magmatism produced an igneous The Norway Basin, documenting magma-starved seafloor spreading at theĪegir Ridge. The northern, and the other across the southern JMMC. Seismic profiles acquired using Ocean Bottom Seismometers, one across

We present the modeling by forward/inverse ray tracing of two wide-angle It finally separated from East Greenland during the Late Oligocene. The western margin underwent prolonged extension before The eastern margin is conjugate to the Møre - Faeroes The JMMC rifted from NW Europe during the Early Eocene under extensive Through two Cenozoic rift episodes: Originally part of East Greenland, The Jan Mayen micro-continent (JMMC) in the NE Atlantic was created

Low gravity field trine 2