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Upper cretaceous-paleogene stratigraphy and development of the Mímir High, Vøring transform margin, Norwegian Sea
Get PDFTransform margins represent strike-slip type of plate boundaries that form during continental breakup and initial ocean opening. They are often characterized by margin-parallel highs with exposed pre- and syn-rift sequences. The Vøring Transform Margin, offshore mid-Norway, initiated in the earliest Eocene during the opening of the NE Atlantic. Here, 2D seismic reflection data reveal a transform margin high, the Mímir High. The western flank of this undrilled structure is a kilometer-high escarpment where seismic reflections of pre-breakup age are truncated at the seafloor. The aim of this study was to recover seabed rock samples from the outcropping or shallowly buried sedimentary sequences to provide a geological tie to the regional seismic framework, thereby constraining the basin history and tectono-stratigraphic development. Seabed samples were successfully collected from 14 gravity core and Selcore stations and 10 ROV (remotely operated vehicle) sites along a 750 m high sampling profile, recovering clay, shales, sandstones and glacial dropstones. Biostratigraphy results revealed that the ages of the sedimentary rocks follow the stratigraphic order predicted by the initial seismic interpretation, with Upper Cretaceous sediments at the base and lower Eocene sediments at the top. The integrated interpretation shows that the Mímir High area, including parts of the outer Vøring and Møre basins and the proto-Jan Mayen Microplate Complex, were characterized by the deposition of late Campanian to early Maastrichtian, near coastal and shale-dominated sequences with poor source rock qualities. The early Paleocene samples indicate deep marine conditions that abruptly ended by rapid uplift of the Mímir High in the earliest Eocene. Finally, a reworked Pliensbachian palynomorph assemblage in potential early Eocene strata indicate the presence of exposed Mesozoic sequences in the vicinity of the Mímir High. We argue that some of the lower Eocene sediments where deposited within a hypothetical drainage system sourced from Greenland (Traill Ø or Jameson Land) and/or from the Jan Mayen Ridge prior to continental separation, and not the result of recent ice-rafting.acceptedVersio
Bidirectional linkage between a long-term energy system and a short-term power market model
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Largescale hydrogen production in Norway - possible transition pathways towards 2050
Get PDFThe report presents a case study where qualitative research framed within transition studies and the multi-level perspective (MLP) is used to discuss the role Norwegian hydrogen production may play in sustainable energy transition towards 2050. Ongoing initiatives and stakeholder perspectives on drivers and barriers are discussed. The focus is on the interaction between wider socio-political and market trends and national regime developments, and how this influences the scope for hydrogen production and deployment. The qualitative results are held up against the findings from model-based assessment of two transition scenarios. Our main finding is that hydrogen may be a key to reach the national climate targets. While hydrogen from natural gas with CCS has been associated with the largest potential, the shift towards a renewable and more distributed energy system is opening new opportunities and roles for hydrogen from electrolysis. The hydrogen industry is growing, but still fragmented, and calls for national coordination. Whereas economic and technological barriers have received most attention, the social acceptance of hydrogen as a sustainable zero-emission solution is a critical factor. The transition is currently at a critical tipping point. Systems thinking and increased focus on sociotechnical interactions are required to unleash the market.publishedVersio
A foundation for complex oxide electronics -low temperature perovskite epitaxy
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In-situ neutron imaging study of NH3 absorption and desorption in SrCl2 within a heat storage prototype reactor
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