Late Pleistocene and Holocene depositional systems and the palaeogeography of the Dogger Bank, North Sea

2005 ◽  
Vol 64 (2) ◽  
pp. 185-196 ◽  
Author(s):  
Simon Fitch ◽  
Ken Thomson ◽  
Vince Gaffney
Keyword(s):  
Late Pleistocene ◽  
North Sea ◽  
River System ◽  
Channel Network ◽  
Dogger Bank ◽  
The Holocene ◽  
Meandering River ◽  
The North ◽  
The North Sea ◽  
Depositional Systems

Abstract3D seismic data from the Dogger Bank, North Sea, allow the mapping of Late Pleistocene and Holocene depositional systems in unprecedented detail. The data demonstrate that glacial processes resulted in the development of incised tunnel valley systems during the Weichselian and that these were subsequently modified by fluvial processes in a pro-glacial setting. Subsequently, the Dogger Bank formed an emergent plain during the Holocene with a complex meandering river system, associated tributary or distributary channels and lakes, dominating the region. Prior to the sea level rising sufficiently to submerge the Dogger Bank around 7500 yr ago, the meandering river system was replaced by a dendritic channel network of potential fluvial, estuarine or intertidal origin. As the Holocene depositional features bear no systematic relationship to the bathymetry this study demonstrates that previously published bathymetry-based models for the Holocene palaeogeographic development of the North Sea require modification.

I.—On a Collection of Pleistocene Mammals Dredged off the Eastern Coast

1878 ◽  
Vol 5 (3) ◽  
pp. 97-100
Author(s):  
William Davies
Keyword(s):  
North Sea ◽  
Eastern Coast ◽  
Dogger Bank ◽  
The North ◽  
Close Proximity ◽  
The North Sea ◽  
Fine Collection ◽  
Pleistocene Mammals ◽  
The Many ◽  
Private Collections

Of the many private collections of vertebrate fossils found on or off the coast of the Eastern counties, none surpass in palæontological and also in geological interest the fine collection made with much zeal and care by Mr. J. J. Owles, of Yarmouth, inasmuch as the larger portion of the specimens are exclusively the remains of Postglacial Mammals, and were brought up in the fishermen’s dredge, either from, or in close proximity to the well-known Dogger Bank, thus proving conclusively the existence of submerged Pleistocene or Postglacial land lying off the Eastern coast in the North Sea. Prof. Boyd Dawkins is the only author, as far as I am at present aware, who has made any reference to this really valuable series of remains, and then only incidentally in his memoir, “On the Distribution of Postglacial Mammals.”

scholarly journals Ice sheet and palaeoclimate controls on drainage network evolution: an example from Dogger Bank, North Sea

2020 ◽  
Vol 8 (4) ◽  
pp. 869-891
Author(s):  
Andy R. Emery ◽  
David M. Hodgson ◽  
Natasha L. M. Barlow ◽  
Jonathan L. Carrivick ◽  
Carol J. Cotterill ◽  
...  
Keyword(s):  
North Sea ◽  
Ice Sheet ◽  
Network Evolution ◽  
Drainage Network ◽  
Channel Network ◽  
Dogger Bank ◽  
The North ◽  
Continental Shelves ◽  
Drainage Networks ◽  
M Channels

Abstract. Submerged landscapes on continental shelves archive drainage networks formed during periods of sea-level lowstand. The evolution of these postglacial drainage networks also reveals how past climate changes affected the landscape. Ice-marginal and paraglacial drainage networks on low-relief topography are susceptible to reorganisation of water supply, forced by ice-marginal rearrangement, precipitation and temperature variations, and marine inundation. A rare geological archive of climate-driven landscape evolution during the transition from ice-marginal (ca. 23 ka) to a fully submerged marine environment (ca. 8 ka) is preserved at Dogger Bank, in the southern North Sea. In this study, our analysis of high-resolution seismic reflection and cone penetration test data reveal a channel network over a 1330 km2 area that incised glacial and proglacial lake-fill sediments. The channel network sits below coastal and shallow marine sediments and is therefore interpreted to represent a terrestrial drainage network. When mapped out, the channel form morphology reveals two distinct sets. The first set comprises two low-sinuosity, wide (>400 m) channels that contain macroforms of braid and side bars. These channels are interpreted to have originated as proglacial rivers, which drained the ice-sheet margin to the north. The second set of channels (75–200 m wide, with one larger, ∼400 m wide) has higher sinuosity and forms a subdendritic network of tributaries to the proglacial channels. The timing of channel formation lacks chronostratigraphic control. However, the proglacial rivers must have formed as the ice sheet was still on Dogger Bank, before 23 ka, to supply meltwater to the rivers. Ice-sheet retreat from Dogger Bank led to reorganisation of meltwater drainage and abandonment of the proglacial rivers. Palaeoclimate simulations show a cold and dry period at Dogger Bank between 23 and 17 ka. After 17 ka, precipitation increased, and drainage of precipitation formed the second set of channels. The second set of rivers remained active until marine transgression of Dogger Bank at ca. 8.5–8 ka. Overall, this study provides a detailed insight into the evolution of river networks across Dogger Bank and highlights the interplay between external (climate) and internal (local) forcings in drainage network evolution.

scholarly journals The catastrophic final flooding of Doggerland by the Storegga Slide tsunami

2008 ◽  
Vol 35 ◽  
pp. 1-24 ◽  
Author(s):  
Bernhard Weninger ◽  
Rick Schulting ◽  
Marcel Bradtmöller ◽  
Lee Clare ◽  
Mark Collard ◽  
...  
Keyword(s):  
Continental Shelf ◽  
North Sea ◽  
Submarine Landslide ◽  
Sea Levels ◽  
The Holocene ◽  
The North ◽  
Coastal Margin ◽  
The North Sea ◽  
Rising Sea Levels ◽  
Storegga Slide

Around 8200 calBP, large parts of the now submerged North Sea continental shelf (‘Doggerland’) were catastrophically flooded by the Storegga Slide tsunami, one of the largest tsunamis known for the Holocene, which was generated on the Norwegian coastal margin by a submarine landslide. In the present paper, we derive a precise calendric date for the Storegga Slide tsunami, use this date for reconstruction of contemporary coastlines in the North Sea in relation to rapidly rising sea-levels, and discuss the potential effects of the tsunami on the contemporaneous Mesolithic population. One main result of this study is an unexpectedly high tsunami impact assigned to the western regions of Jutland.

scholarly journals Multi-Proxy Characterisation of the Storegga Tsunami and Its Impact on the Early Holocene Landscapes of the Southern North Sea

Geosciences ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 270 ◽  
Author(s):  
Vincent Gaffney ◽  
Simon Fitch ◽  
Martin Bates ◽  
Roselyn L. Ware ◽  
Tim Kinnaird ◽  
...  
Keyword(s):  
North Sea ◽  
River System ◽  
Seismic Survey ◽  
Tsunami Deposit ◽  
Southern North Sea ◽  
The North ◽  
Sediment Deposits ◽  
The North Sea ◽  
Northern North Sea ◽  
The Impact

Doggerland was a landmass occupying an area currently covered by the North Sea until marine inundation took place during the mid-Holocene, ultimately separating the British landmass from the rest of Europe. The Storegga Event, which triggered a tsunami reflected in sediment deposits in the northern North Sea, northeast coastlines of the British Isles and across the North Atlantic, was a major event during this transgressive phase. The spatial extent of the Storegga tsunami however remains unconfirmed as, to date, no direct evidence for the event has been recovered from the southern North Sea. We present evidence of a tsunami deposit in the southern North Sea at the head of a palaeo-river system that has been identified using seismic survey. The evidence, based on lithostratigraphy, geochemical signatures, macro and microfossils and sedimentary ancient DNA (sedaDNA), supported by optical stimulated luminescence (OSL) and radiocarbon dating, suggests that these deposits were a result of the tsunami. Seismic identification of this stratum and analysis of adjacent cores showed diminished traces of the tsunami which was largely removed by subsequent erosional processes. Our results confirm previous modelling of the impact of the tsunami within this area of the southern North Sea, and also indicate that these effects were temporary, localized, and mitigated by the dense woodland and topography of the area. We conclude that clear physical remnants of the wave in these areas are likely to be restricted to now buried, palaeo-inland basins and incised river valley systems.

Tectonostratigraphic framework and depositional history of the Cretaceous–Danian succession of the Danish Central Graben (North Sea) – new light on a mature area

2017 ◽  
Vol 8 (1) ◽  
pp. 9-46 ◽  
Author(s):  
F. S. P. van Buchem ◽  
F. W. H. Smit ◽  
G. J. A. Buijs ◽  
B. Trudgill ◽  
P.-H. Larsen
Keyword(s):  
North Sea ◽  
Depositional Facies ◽  
Depositional History ◽  
Sequence Stratigraphic ◽  
Stratigraphic Analysis ◽  
The North ◽  
Economic Significance ◽  
History Of ◽  
The North Sea ◽  
Depositional Systems

AbstractAn integrated tectonic and sequence stratigraphic analysis of the Cretaceous and Danian of the Danish Central Graben has led to significant new insights critical for our understanding of the chalk facies as a unique cool-water carbonate system, as well as for the evaluation of its potential remaining economic significance.A major regional unconformity in the middle of the Upper Cretaceous chalk has been dated as being of early Campanian age. It separates two distinctly different basin types: a thermal contraction early post-rift basin (Valanginian–Santonian), which was succeeded by an inversion tectonics-affected basin (Campanian–Danian). The infill patterns for these two basin types are dramatically different as a result of the changing influence of the tectonic, palaeoceanographic and eustatic controlling factors.Several new insights are reported for the Lower Cretaceous: a new depositional model for chalk deposition along the basin margins on shallow shelves, which impacts reservoir quality trends; recognition of a late Aptian long-lasting sea-level lowstand (which hosts lowstand sandstone reservoirs in other parts of the North Sea Basin); and, finally, the observation that Barremian–Aptian sequences can be correlated from the Boreal to the Tethyan domain. In contrast, the Late Cretaceous sedimentation patterns have a strong synsedimentary local tectonic overprint (inversion) that influenced palaeoceanography through the intensification of bottom currents and, as a result, the depositional facies. In this context, four different chalk depositional systems are distinguished in the Chalk Group, with specific palaeogeography, depositional features and sediment composition.The first formalization of the lithostratigraphic subdivision of the Chalk Group in the Danish Central Graben is proposed, as well as an addition to the Cromer Knoll Group.

Paleocene deep-water depositional systems in the North Sea Basin

2012 ◽  
Vol 18 (1) ◽  
pp. 97-114 ◽  
Author(s):  
Evelina Dmitrieva ◽  
Christopher A-L. Jackson ◽  
Mads Huuse ◽  
Adam McCarthy
Keyword(s):  
North Sea ◽  
Deep Water ◽  
The North ◽  
The North Sea ◽  
Depositional Systems

scholarly journals Origin of a deep buried valley system in Pleistocene deposits of the eastern central North Sea

1995 ◽  
Vol 12 ◽  
pp. 7-19
Author(s):  
Inger Salomonsen
Keyword(s):  
Sea Level ◽  
North Sea ◽  
River System ◽  
Sea Level Changes ◽  
Upper Pleistocene ◽  
The North ◽  
Late Tertiary ◽  
Deltaic Sedimentation ◽  
The North Sea ◽  
Glacial Periods

In the North Sea, the sedimentary development of the late Tertiary and early Quaternary was dominated by deltaic sedimentation in a fast subsiding basin. During the Pleistocene, pronounced climatic changes affected the sedimentation of the area and progradation of the delta systems ceased. The Middle and Upper Pleistocene sedimentary successions consist of alternations of marine and fluvial deposits, partly reworked during glacial periods. Seismic records from the Danish sector of the North Sea reveal numerous deep incisions cut down from various levels of the Middle and Upper Pleistocene successions. These incisions are concluded to form a pattern of buried valleys. Detailed seismic stratigraphic analysis shows the occurrence of various internal unconformities within these buried valleys. It is concluded that the valleys originate from a river system developed in periods of repeated sea-level changes. Pluvial erosion during glacial sea-level lowstand and glacial meltwater action is proposed to have been responsible for the origin of the valley system. Thus, in Middle and Upper Pleistocene glacial periods drainage and associated sediment transport occurred from Northwest and Central European land areas via a presently buried river system in the southeastern North Sea towards a depositional basin north and northwest of the Danish North Sea sector.

scholarly journals On the Occurrence of Squilla desmaresti in the North Sea

1902 ◽  
Vol 6 (3) ◽  
pp. 387-388 ◽  
Author(s):  
F. Jeffrey Bell
Keyword(s):  
Natural History ◽  
North Sea ◽  
Natural History Museum ◽  
History Museum ◽  
Dogger Bank ◽  
The North ◽  
The North Sea

So far as I have been able to discover, there is no record of the presence of this or any other Squilla in the North Sea; to make sure I inquired of Dr. Hoek, whose experience is unrivalled, and he assures me that the only record is that of an Erichtheus stage, discovered on the Dogger Bank during the cruise of the Pommerania (1872). Early in May (1901) I received through the Director of the Natural History Museum a specimen of Squilla, as to the rarity of which in the Channel he called my attention.

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