Suprabasins – sedimentary response to growth of major extensional fault systems

The Suprabasins project targets geological research in an interdisciplinary joint venture between Norwegian and international academia and industry. Objectives cover knowledge needs for prolific petroleum systems of the Norwegian Continental Shelf, the Utsira, Loppa and Frøya-region highs and their long-lived fault zones. Conceptual studies address dynamic rift landscapes of modern and ancient basins, emphasising uplift versus depositional systems that will generate novel models for tectonic settings. The Suprabasins is in full operation, with a productive workforce of 3 PhD?s, 1 Postdocs and 2 Researchers plus two in-kind positions (PhD+Postdoc). Five master studies are underway. 10 articles are published in referee-based scholarly journals, and 48 conference and seminar contributions reflect good progress by the project teams. Broad industry dialog has been entertained by teamwork and video-based seminar series, backed by a dataset repository for the partnership. There has been fieldwork in Svalbard but not internationally. Delays with shifts in milestones link to covid mitigations in 2020-21 will be rectified in 2022.

Rifts and rifted margins contain faults with displacements much larger (>10 km) than the half-graben bounding faults normally considered in rift basin studies. The down-dip and lateral evolution of these structures, and the syntectonic basins juxtaposed with them, are only partly understood. The Suprabasin project targets rift-margin highs with internal and fringing basins. Focus is on the development and modification of extensional basins linked to major, long-lived fault zones, with scopes into sedimentary architecture and associated distribution of reservoirs, footwall rebound controlling sedimentary fairways, landscape denudation as temporal sediment source, and burial history of basins. Proposed work is tailored to challenges of the prolific Frøya, Utsira and Loppa highs, which represent large, temporally constrained uplifts behind major rift-bounding faults. Research scopes employ the most recent advances in tectonostratigraphic research and are developed in close dialogue with the industry. Petromaks2 compliance are found in exploration and increased recovery, including Arctic areas. There are strong elements of researcher recruitment, industry involvement, optimal management, and user participation as well as interdisciplinary and international cooperation. The objectives of the Suprabasin proposal cover knowledge needs for prolific petroleum systems of the Norwegian Continental Shelf; verified for some parts of the shelf but underexplored for other areas. Recent discoveries of the Utsira, Loppa and Frøya highs, coupled with exploration and production challenges, require new insight and novel approaches to reach the area’s full economic potential. We will unravel internal basin geometries of the Utsira, Loppa and Frøya highs, in a fully integrated analysis of the sedimentological, stratigraphical and structural setting, spanning across to burial history; to constrain timing and thermal maturation in relation to play analysis.

Publications from Cristin

The Svalbard Carboniferous to Cenozoic Composite Tectono-Stratigraphic Element

3D evolution of detachment fault systems in necking domains: insights from the Klakk Fault Complex and the Frøya High, mid-Norwegian rifted margin

The Hambergfjellet Formation on Bjørnøya – sedimentary response to early Permian tectonics on the Stappen High

Pore system evolution in arenaceous regoliths - Case study from the Sila Massif (southern Italy)

Core complex fault rocks of the Silurian to Devonian Keisarhjelmen detachment in NW Spitsbergen

Late Paleozoic supradetachment basin configuration in the southwestern Barents Sea — Intrabasement seismic facies of the Fingerdjupet Subbasin

Peer-reviewd publications, graduated PhD and MSc theses that iclude material from UNIS CO2 Lab from 2008 to 2020

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The impact of faulting in depocentre development, facies assemblages, drainage patterns, and provenance in continental half‐graben basins: an example from the Fanja Basin of Oman. Basin Research.

Permian carbonates of the Utsira High - new learnings

Shallow marine sedimentary architecture of Jurassic growth-basin proximal to exhumed basement – the Johan Sverdrup case

Core workshop and core viewing of Zechstein material

Permian carbonates of the Utsira High – new learnings

Jurassic sandstones flanking the Utsira High - case study of the Johan Sverdrup Field

Stavanger core viewing and Lundin office visit

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From detachment fault to turtleback structural configuration: insights from the Klakk Fault Complex and the Frøya High on the mid-Norwegian margin

Sequential erosion of footwall culminations in necking domains during rifting: observations from and possible implications for Middle Jurassic – Early Cretaceous sedimentary distribution on and adjacent the Frøya High, mid-Norwegian margin

Frøya High Learnings

Plans for a Suprabasins-II proposal

Status on Suprabasins

Introduction to Suprabasins

Introduction to Utsira High proper

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Sele Ridge tectonics

Extensional fault growth in high-resolution seismic data

Tectono-sedimentary evolution of NW parts of the Devonian Hornelen Basin, West Norway

Extensional fault growth in high-resolution seismic data

Forlastningsarkitektur og forkasningsprodukter i Persvik forkastningssone, Møre-Trøndelag forkastningskompleks

Sele Ridge tectonics

Tectonic evolution of the Edvard Grieg Field (Utsira High) - Assessment of seismic scale faults and deformation bands in drill cores

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