Revised Upper Cenozoic stratigraphy of the Dutch sector of the North Sea Basin: towards an integrated lithostratigraphic, seismostratigraphic and allostratigraphic approach

AbstractA revised Upper Cenozoic stratigraphic framework of the Dutch sector of the North Sea Basin is presented whereby offshore stratigraphic units are integrated or correlated with onshore units. The framework is based on an integrated stratigraphic approach that combines elements of lithostratigraphy, seismostratigraphy and allostratigraphy. Offshore formations are redefined in terms of seismofacies and lithofacies associations, and are differentiated on the basis of common genesis and stratigraphic position. These facies associations represent five major depositional environments, which occur in repetitive successions in the subsurface of the Netherlands: Marine, Coastal, Glacial, Fluvial, and Local Terrestrial. Five conceptual basin-wide bounding discontinuities are identified in the North Sea-Basin that span land and sea. They are represented by both seismostratigraphic and lithostratigraphic unconformities and interpreted as surfaces that formed as a result of North Sea Basin-wide changes in depositional systems. Their formation relates to sea level rise, continental-scale glaciations, and tectonic processes. The bounding discontinuities separate informal allostratigraphic groups of formations that have a grossly uniform geologic setting in common. While the allostratigraphic principles provide a view on the stratigraphy on the largest spatial and temporal scale, the genetic concept facilitates mapping on a local scale.

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Carboniferous records of the Zoophycos group of trace fossils from England, Wales, the Isle of Man and the North Sea

Proceedings of the Yorkshire Geological Society ◽

10.1144/pygs2019-007 ◽

2020 ◽

Vol 63 (2) ◽

pp. 135-145

Author(s):

Duncan McLean ◽

Matthew Booth ◽

David J. Bodman ◽

Finlay D. McLean

Keyword(s):

North Sea ◽

Trace Fossils ◽

Depositional Environments ◽

Common Component ◽

Content Type ◽

Clastic Rocks ◽

Isle Of Man ◽

The North ◽

The North Sea ◽

Supplementary Material

The Zoophycos group of trace fossils is common in Carboniferous to recent marine strata and sediments, and is a common component of ichnofaunas in the Visean and Namurian stages of England and Wales. A review of new and published records indicates that it is often present in limestones and sandstones of Chadian to Arnsbergian age. Thereafter it is less common, and restricted to clastic rocks. There are no known records within Carboniferous strata above the lowest Westphalian. The form is most common and often abundant in limestones of the Yoredale facies in the upper Visean and lower Namurian stages of northern England, particularly so in northern Northumberland. Where detailed sedimentological data exist, they indicate that the organisms responsible for the Zoophycos group burrowed into unconsolidated carbonate substrate that was deposited under low accumulation rates, often affected by storm wave action and where seawater flow provided a nutrient supply. However, in mixed carbonate–clastic settings, the deep-tier nature of Zoophycos may indicate that the organism lived in overlying shallow-marine, clastic-dominated depositional environments and burrowed down into the carbonate substrate. The same may be true of siliciclastic depositional settings where the presence of Zoophycos in some sandstones may reflect the palaeoenvironment of the overlying, finer-grained transgressive marine (prodelta and distal mouth bar) deposits.Supplementary material: A spreadsheet with details of Carboniferous records of Zoophycos group fossils from England, Wales, the Isle of Man and the North Sea is available at https://doi.org/10.6084/m9.figshare.c.4994636

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Triassic lithostratigraphy of East Greenland between Scoresby Sund and Kejser Franz Josephs Fjord

Bulletin Grønlands Geologiske Undersøgelse ◽

10.34194/bullggu.v139.6681 ◽

1980 ◽

Vol 139 ◽

pp. 1-56

Author(s):

L.B Clemmensen

Keyword(s):

North Sea ◽

Depositional Environments ◽

East Greenland ◽

The North ◽

The North Sea ◽

Sea Area

The lithostratigraphic scheme currently in use for the Triassic rocks in Jameson Land and ScoresbyLand (70°25'-72°N) is revised and extended to cover areas to the north of Kong Oscars Fjord, up to Kejser Franz Josephs Fjord (73°15'N). The Triassic sediments (1000-1700 m thick) belong to the Scoresby Land Group which is divided into two subgroups (redefined) and four formations: the marine Wordie Creek, and the mainly continental Pingo Dal (redefined), Gipsdalen (redefined) and Fleming Fjord Formations. These formations are here subdivided into a total of 12 members and 4 beds. Four members (the Svinhufvuds Bjerge, Ødepas, Kolledalen and Vega Sund Members) and four beds (Gråklint, Sporfjeld, Pingel Dal and Tait Bjerg Beds) are new. Three members (the Paradigmabjerg, Solfaldsdal and Kap Seaforth Members) are redefined. The lithostratigraphic succession and the Triassic depositional environments in East Greenland are briefly discussed and compared with other Triassic sequences in the North Sea area.

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A Quaternary aminostratigraphy constraining chronology of depositional environments in the North Sea Basin

Marine Geology ◽

10.1016/j.margeo.2017.11.004 ◽

2018 ◽

Vol 402 ◽

pp. 139-152 ◽

Cited By ~ 4

Author(s):

Benedict T.I. Reinardy ◽

Hans Petter Sejrup ◽

Berit O. Hjelstuen ◽

Edward King ◽

Hans Augedal

Keyword(s):

North Sea ◽

Depositional Environments ◽

The North ◽

The North Sea

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A reinterpretation of the ages and depositional environments of the lower and middle Miocene stratigraphic records in a key area along the southern margin of the North Sea Basin

Geological Magazine ◽

10.1017/s0016756817000991 ◽

2017 ◽

Vol 156 (3) ◽

pp. 525-532 ◽

Cited By ~ 4

Author(s):

JEF DECKERS ◽

STEPHEN LOUWYE

Keyword(s):

North Sea ◽

Extreme Environments ◽

Depositional Environments ◽

Rift System ◽

Short Pulses ◽

Accommodation Space ◽

The North ◽

Southern Margin ◽

The North Sea ◽

Peat Formation

AbstractThe stratigraphic reinterpretation of the palynologically analysed Miocene succession of the Wijshagen borehole along the southern margin of the North Sea Basin allowed an age assessment – late Burdigalian to early Serravalian – for the Genk Sand Member of the Bolderberg Formation. The depositional environment varied during Burdigalian to Serravalian times from continental (peat formation) to open marine (glauconitic sands), respectively from south to north in the Roer Valley Rift System. The study area of the Wijshagen borehole is located in the central part of the Roer Valley Rift System between these extreme environments. During the Burdigalian, the glauconitic fine clayey sands of the Houthalen Sand Member were deposited in the study area. From the late Burdigalian onwards, the glauconite content decreased and lignite content increased as a result of high influx of clastic material in the Roer Valley Rift System, and marked the start of the deposition of the Genk Sand Member. The Genk Sand Member shows an overall coarsening-upwards trend, which is consistent with the gradual infill of the available accommodation space in the Roer Valley Rift System by northwest-prograding clastic delta sequences. Dinoflagellate cyst analyses indicate that the Genk Sand Member was largely deposited in a marginal marine environment with only short pulses of continental input. These pulses of continental input increase in a southerly or landward direction where they led to the development of thick lignite seams.

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