Rift kinematics preserved in deep‐time erosional landscape below the northern North Sea

Wrona, Thilo; Whittaker, Alexander C.; Bell, Rebecca; Gawthorpe, Robert L.; Fossen, Haakon; Jackson, Christopher Aiden-Lee; Bauck, Marit Stokke

doi:10.1111/bre.12732

Basin Research

2022

DOI: 10.1111/bre.12732

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Rift kinematics preserved in deep‐time erosional landscape below the northern North Sea

Thilo Wrona

Alexander C. Whittaker

Rebecca Bell

et al.

Abstract: Growing normal faults influence the geometry of drainage networks and incision rates within upland catchments (e.g., Kirby & Whipple, 2012;Roda-Boluda & Whittaker, 2017), which in turn controls the location, magnitude and routing of sediment supply to neighbouring depocenters (e.g.,

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Cited by 4 publications

References 63 publications

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Current Geological Issues and Future Perspectives in Deep-Time Source-to-Sink Systems of Continental Rift Basins

Liu,

Li,

Chen

et al. 2024

J. Earth Sci.

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Current Geological Issues and Future Perspectives in Deep-Time Source-to-Sink Systems of Continental Rift Basins

Liu,

Li,

Chen

et al. 2024

J. Earth Sci.

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The North Sea rift basement records extensional collapse of the Caledonian orogen

Fossen,

Polonio,

Bauck

et al. 2024

Commun Earth Environ

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Our knowledge of crystalline basement rocks flooring continental rift basins, rifted margin deposits, and foreland basins is poor, yet important for understanding basin evolution, crustal heat production, petroleum maturation, and for offshore mineral exploration. Using the northern North Sea rift as an example, we demonstrate how modern broadband seismic data can be utilized to unravel basement lithology and structure at a previously unprecedented level of detail. In our case study, we have discovered a pre-rift Caledonian basement with a folded structural pattern very similar to Devonian collapse-related structures onshore Western Norway. The data indicate that the collapse-generated Caledonian infrastructure extends >100 km into the northern North Sea, defining a wide zone of Caledonian crust that turned hot and mobilized vertically by upright folding and detachment faulting during the post-collisional stage. This extensive post-orogenic thermally induced collapse makes the south Scandinavian Caledonides unique among Phanerozoic orogens.

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Late Palaeozoic structural evolution of the Patch Bank Ridge and Utsira High, northern North Sea

Bauck,

Faleide,

Fossen

et al. 2024

Basin Research

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This study focuses on the Late Palaeozoic development of the area east of Utsira High in the North Sea, where the stratigraphic section below the late Permian Rotliegend Group is undrilled. We use regional 3D seismic data to study structuring, sediment distribution and geomorphology across the Patch Bank Ridge and Utsira High in the North Sea. The results show that the Stord Basin and the bounding Utsira East fault initially developed during the Late Palaeozoic extension, probably during the Devonian, and that the Utsira Shear Zone controlled the location of Late Palaeozoic depocentres. The Patch Bank Ridge is an uplifted part of the Stord Basin where we identify Late Palaeozoic growth strata along the southern and northern flanks, indicating a similar timing of the structural evolution in this area. Two key wells, in the Sele High and Ling Depression, are used to relate a Late Palaeozoic isopach map with regional structuring, surface tilt and basement morphology to the enigmatic parts of the Late Palaeozoic basin system. Our results supplement regional models for the Late Palaeozoic basin development, we suggest that the deeply eroded Devonian half‐grabens preserved on the Utsira High formed parts of an extensive basin system that show stratigraphic expansion towards their bounding faults. The Top Basement surface at these highs offers several distinct geomorphologies that evolved during three periods of exposure, expressed as (i) a tilted and rugose landscape, (ii) distinct drainage networks and (iii) peneplain surfaces. Cover sediments place these landscapes to the (i) Devonian, (ii) Carboniferous/Permian/Triassic and (iii) Late Triassic periods.

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Rift kinematics preserved in deep‐time erosional landscape below the northern North Sea

Abstract: Growing normal faults influence the geometry of drainage networks and incision rates within upland catchments (e.g., Kirby & Whipple, 2012;Roda-Boluda & Whittaker, 2017), which in turn controls the location, magnitude and routing of sediment supply to neighbouring depocenters (e.g.,

Cited by 4 publications

References 63 publications

Current Geological Issues and Future Perspectives in Deep-Time Source-to-Sink Systems of Continental Rift Basins

Current Geological Issues and Future Perspectives in Deep-Time Source-to-Sink Systems of Continental Rift Basins

The North Sea rift basement records extensional collapse of the Caledonian orogen

Late Palaeozoic structural evolution of the Patch Bank Ridge and Utsira High, northern North Sea

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