Quantitative Determination of Tertiary Sediment Supply to the North Sea Basin

Xijin, Liu; Galloway, William E.

doi:10.1306/3b05bb28-172a-11d7-8645000102c1865d

Cited by 8 publications

(3 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…| 1557 EAGE OKWARA et al et al, 2018;Guillocheau et al, 2012;Hampson et al, 2014;Liu & Galloway, 1997;Lodhia et al, 2019;Walford et al, 2005) over the same time interval. Importantly, the challenges associated with incomplete preservation of ancient sediment routing systems, spatial and temporal variations in geological characteristics, sparse sampling by widely spaced well data and other dataset limitations imply that a systematic method of quantifying the probabilistic range of outcomes is needed to robustly assess uncertainties (e.g., Brewer et al, 2020;Zhang et al, 2018).…”

Section: Highlightsmentioning

confidence: 97%

“…The ability to constrain sediment supply and its associated grain‐size mix from the source area to the depositional sink is therefore fundamental to developing robust stratigraphic interpretations and reconstructing palaeocatchment conditions. At the basin scale, gathering data to constrain an entire ancient source‐to‐sink system over a range of geological timescales (>10 6 year) can be challenging, as it requires the integration of both ‘source‐focused’ constraints on the size of the palaeocatchment, bedrock lithology, relief evolution, and palaeoclimate (Galloway et al, 2011; Lyster et al, 2020; Tinker et al, 2008) and ‘sink‐focused’ constraints on basin architecture, tectonic subsidence, and sediment thicknesses or volumes (Grimaud et al, 2018; Guillocheau et al, 2012; Hampson et al, 2014; Liu & Galloway, 1997; Lodhia et al, 2019; Walford et al, 2005) over the same time interval. Importantly, the challenges associated with incomplete preservation of ancient sediment routing systems, spatial and temporal variations in geological characteristics, sparse sampling by widely spaced well data and other dataset limitations imply that a systematic method of quantifying the probabilistic range of outcomes is needed to robustly assess uncertainties (e.g., Brewer et al, 2020; Zhang et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Source‐to‐sink mass‐balance analysis of an ancient wave‐influenced sediment routing system: Middle Jurassic Brent Delta, Northern North Sea, offshore UK and Norway

et al. 2023

View full text Add to dashboard Cite

Sediment mass‐balance analysis provides key constraints on stratigraphic architecture and its controls. We use the data‐rich Middle Jurassic Brent Delta sediment routing system in the proto‐Viking Graben, Northern North Sea, to estimate sediment budgets and mass‐balance between source areas and depositional sinks. Published studies are synthesised to provide an age‐constrained sequence stratigraphic framework, consisting of four previously defined genetic sequences (J22, J24, J26, J32). Genetic sequence J32 (3.9 Myr) records transverse progradation of basin‐margin deltas, sourced from the Shetland Platform to the west and Norwegian Landmass to the east. Genetic sequences J24 (1.1 Myr) and J26 (0.9 Myr) record the rapid progradation and subsequent aggradation of the Brent Delta along the basin axis, sourced from the uplifted Mid‐North Sea High to the south, and the western and eastern source regions. Genetic sequence J32 (2.2 Myr) records the retreat of the Brent Delta. Sediment budgets for the four genetic sequences are estimated using palaeogeographical reconstructions, isopach maps, and sedimentological analysis of core and well‐log data. The estimated net‐depositional sediment budget for the mapped Brent Delta system is 2.0–2.8 Mt/year. Temporal variations in net‐depositional sediment budget were driven by changes in tectonic boundary conditions, such as the onset of uplift before the deposition of genetic sequence J24. Over the same time period, the Shetland Platform, Norwegian Landmass and Mid‐North Sea High source regions are estimated to have supplied 2.3–5.6, 5.0–14.1, and 2.8–9.4 Mt/year of sediment, respectively, using the BQART sediment load model and independent geometrical reconstruction of eroded volumes, which are constrained by isostatic uplift estimates based on the geochemistry of syn‐depositional volcanic rocks. The net‐depositional sediment budget in the sink is an order‐of‐magnitude smaller than the total sediment budget supplied by the source regions (13.9–23 Mt/year). This discrepancy suggests that along‐shore transport by wave‐generated currents into the coeval Faroe‐Shetland Basin and/or down‐dip transport by gravity flows into the coeval western Møre Basin played a key role in redistributing sediments away from the Brent Delta system.

show abstract

Section: Highlightsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Source‐to‐sink mass‐balance analysis of an ancient wave‐influenced sediment routing system: Middle Jurassic Brent Delta, Northern North Sea, offshore UK and Norway

et al. 2023

View full text Add to dashboard Cite

show abstract

“…From ~65 Ma, the region experienced uplift on the order of hundreds of meters, commonly linked to dynamic topography associated with the Iceland mantle plume (e.g., Nadin and Kusznir, 1995;White and Lovell, 1997;Skogseid et al, 2000;Hartley et al, 2011;Stucky de Quay et al, 2017). The consequence of this regional uplift was a significant increase in sediment supply to the North Atlantic margins, manifested as progradation of thick shallow to deep-marine clastic wedges (e.g., Hartog Jager et al, 1993;Liu and Galloway, 1997;Martinsen et al, 1999;Henriksen et al, 2005;Hovikoski et al, 2021). At the same time, expulsion of methane and carbon dioxide prior to North Atlantic break-up is believed to have been the main driver for the PETM (Svensen et al, 2004;Kjoberg et al, 2017), which was a short-lived (100-200 kyr) climate perturbation (Sluijs et al, 2007a;Li et al, 2022) superimposed on the longer term marginal uplift.…”

Section: Introductionmentioning

confidence: 99%

Stratigraphic expression of the Paleocene-Eocene Thermal Maximum climate event during long-lived transient uplift—An example from a shallow to deep-marine clastic system in the Norwegian Sea

Sømme

Huwe²,

Martinsen³

et al. 2023

Front. Earth Sci.

View full text Add to dashboard Cite

Seismic geomorphology and stratigraphic analysis can reveal how source-to-sink systems dynamically respond to climatic and tectonic forcing. This study uses seismic reflection data from the Norwegian Sea to investigate the stratigraphic response to a short-lived (0.2 Myr) period of climate change during the Paleocene-Eocene Thermal Maximum (PETM), superimposed on a long-lived (∼8 Myr) period of hinterland uplift. The data show that long-term uplift resulted in ∼300 m of relative sea-level fall, forced regression and formation of incised valleys during the latest Paleocene-earliest Eocene. The short-lived PETM climate perturbation at ∼56 Ma changed the transport dynamics of the system, allowing sediment to be bypassed to wide channel complexes on the basin floor, feeding a large mud-rich basin-floor fan more than 50 km into the basin. Our analysis also suggest that sediment supply was up to four times higher during the PETM compared to earlier and later periods. Maximum regression at ∼55.5 Ma resulted in the formation of a subaerial unconformity. The style of subaerial incision was dictated by shelf accommodation and proximity to the area of direct sediment input. Out-of-grade shelves and slopes sourced by littoral drift were prone to incision, but direct-fed and graded shelves and slopes were not. Despite maximum regression, sediments were not transported significantly beyond the toe-of-slope aprons, suggesting that rapid climate change was more efficient in bypassing sediment to the deep-water than low stands of sea level. As long-term accommodation increased after the PETM, deltas were still able to reach shelf edge, but periods of maximum regression were not associated with deep incisions along the outer shelf and only smaller canyons and gullies formed. The shelf-slope wedge was finally transgressed at ∼51 Ma. The age of deep valley incisions overlaps with the time of subaerial erosion in the East Shetland and Faroe-Shetland basins, suggesting a common mechanism for North Atlantic uplift around 55–56 Ma. Other seismic stratigraphic surfaces do not seem to be regionally time-equivalent, highlighting the importance of local controls on internal architecture of shelf-slope wedges. This study demonstrates the high-resolution stratigraphic response to long- and short-term external forcing together with intrinsic processes and can help identify similar relationships in other areas.

show abstract

Untitled

Galloway

2001

Marine Geophysical Researches

View full text Add to dashboard Cite

Quantitative Determination of Tertiary Sediment Supply to the North Sea Basin

Cited by 8 publications

References 57 publications

Source‐to‐sink mass‐balance analysis of an ancient wave‐influenced sediment routing system: Middle Jurassic Brent Delta, Northern North Sea, offshore UK and Norway

Source‐to‐sink mass‐balance analysis of an ancient wave‐influenced sediment routing system: Middle Jurassic Brent Delta, Northern North Sea, offshore UK and Norway

Stratigraphic expression of the Paleocene-Eocene Thermal Maximum climate event during long-lived transient uplift—An example from a shallow to deep-marine clastic system in the Norwegian Sea

Untitled

Contact Info

Product

Resources

About