Trøndelag Platform & Halten-Dønna terraces Composite Tectono-Sedimentary Element, Norwegian Rifted Margin, Norwegian Sea
AbstractThe Trøndelag Platform and Halten-Dønna Terraces occupy a central part of the Norwegian Sea Rifted Continental Margin off the mid-Norway coast. The margin is expected to hold 4500 Mbboe of undiscovered oil equivalents and represents an economically important Arctic province. The geological evolution of the area is closely linked to processes involving the Caledonian orogeny and subsequent plate tectonic re-organizations, multiphase rifting, continental drift and glaciations across the northern hemisphere. In this chapter we review the geology of the Trøndelag Platform and Halten-Dønna terraces Composite Tectono-Sedimentary Element based on published data and results of Equinor ASA in-house studies. Three new structural elements are defined for the first time: the Leka fault complex, the Vikna high and the Sula basin.