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Kirabo E. Mugwanya
February 12 @ 12:15 am - 1:00 pm
Tectonic and Sedimentary Evolution of the Triassic Deposits on the Horda Platform, Norwegian Continental Shelf
The Horda platform on the Norwegian Continental Shelf hosts major petroleum fields like Troll and CO₂ storage sites such as the Northern Lights. However, the Triassic deposits remain underexplored for reasons of low data coverage and quality. Using seismic and wireline data, this study illustrates the evolution of major faults and its role on the basin’s sedimentology. The Horda platform hosts over 5 km of rapidly deposited (c. 50 Ma) alluvial sediments, formed under a shifting arid to humid climate, with varying tectonic activity and potential rapid orogenic denudation. Tectono-stratigraphic reconstructions of the sub-basins are presented to illustrate the control of tectonic evolution on the spatial and temporal facies distribution and the stratigraphic architecture. A case of a mega-scale mass movement (?) driven by fault detachment and evidence of early Triassic erosional uniformity are additionally illustrated.