scholarly journals The cyclic Rørdal Member – a new lithostratigraphic unit of chronostratigraphic and palaeoclimatic importance in the upper Maastrichtian of Denmark

2010 ◽  
Vol 58 ◽  
pp. 89-98
Author(s):  
Finn Surlyk ◽  
Lars Stemmerik ◽  
Morten Ahlborn ◽  
Rikke Harlou ◽  
Bodil W. Lauridsen ◽  
...  
Keyword(s):  
North Sea ◽  
Deep Water ◽  
Upper Cretaceous ◽  
Planktonic Foraminifers ◽  
The North ◽  
Water Wells ◽  
Type Area ◽  
The North Sea ◽  
Early Late ◽  
Upper Maastrichtian

The Maastrichtian chalk of the Danish Basin has been referred to the Tor Formation of the North Sea, but this may not be tenable because this formation in its type area shows a much higher degree of redeposition than the Maastrichtian chalk of the Danish Basin. The onshore succession has not been lithostratigraphically subdivided due to its rather monotonous nature and the widely scattered outcrops. An exception is the uppermost Maastrichtian exposed at Stevns Klint which is been referred to the Sigerslev Member, comprising rather benthos-poor, deep-water pure chalk, and the overlying mound-bedded, bryozoan-rich chalk which is placed in the Højerup Member. In addition, a thin marly chalk bed, the Kjølby Gaard Marl Member, containing Tethyan planktonic foraminifers is known from localities in northern Jylland and from water wells around Køge, eastern Sjælland. The new Rørdal Member is a cyclic chalk-marl unit, about 10 m thick, sandwiched between pure white chalks. It is well exposed in the large Rørdal quarry in Aalborg, and is recognised in boreholes south of Aalborg and in the Stevns-1 and Karlslunde-1 boreholes south of Copenhagen. Coccolith and brachiopod data show that it belongs to the UC20b-cBP nannofossil zone of the North Sea scheme for the Upper Cretaceous Boreal province, and the semiglobularis-humboldt iibrachiopod zone, both indicating the lower upper Maastrichtian. Isotope data show that it represents a distinct early late Maastrichtian cooling event. The member thus has a basinwide distribution and is an important isochronous marker.

Unusual Facies and Geometries of the Paleogene Deep-Water Systems in the North Sea - Effects of Sand Remobilisation

2002 ◽  
Author(s):  
D. Duranti ◽  
M. Huuse ◽  
J.A. Cartwright ◽  
A. Hurst ◽  
B. Cronin ◽  
...  
Keyword(s):  
North Sea ◽  
Deep Water ◽  
Water Systems ◽  
The North ◽  
The North Sea

scholarly journals The Rupelian-Chattian boundary in the North Sea Basin and its calibration to the international time-scale

2004 ◽  
Vol 83 (3) ◽  
pp. 241-248 ◽  
Author(s):  
S. Van Simaeys
Keyword(s):  
Global Warming ◽  
Sea Level ◽  
North Sea ◽  
Classical Problem ◽  
Late Oligocene ◽  
Type Region ◽  
The North ◽  
Global Cooling ◽  
The North Sea ◽  
Early Late

AbstractThe classical problem of the nature and age of the Rupelian-Chattian (Early-Late Oligocene) unconformity in its type region is here approached using organic walled dinoflagellate cyst (dinocyst) correlations between the North Sea Basin and well-calibrated central Italian (Tethyan Ocean) sections. Useful Oligocene dinocyst events are the last occurrence ofEnneadocysta pectiniformis(~29.3 Ma), and the first occurrences ofSaturnodinium pansum(~29.4 Ma),Distatodinium biffii(~27.9 Ma) andArtemisiocysta cladodichotoma(~26.7 Ma).The latter event marks the earliest Chattian. The improved correlations indicate that the Rupelian-Chattian (R-C) boundary is associated with the so-called ‘Oligocene Glacial Maximum’. This phase of important global cooling and glacio-eustatic sea level fall is genetically related to the unconformity between the classic Oligocene stages. Subsequent global warming (so-called ‘Late Oligocene Warming Event’), induced a major sea level rise, leading e.g. to the time-transgressive deposition of the typical basal Chattian glauconitic sands. The oldest of the Chattian units have a GPTS age of-26.7 Ma. It further appears that a hiatus of ~500 kyrs spans the classic Rupelian-Chattian unconformity.

scholarly journals A brachiopod-dominated sea-floor assemblage from the Late Pliocene of the eastern Netherlands

2013 ◽  
Vol 92 (2-3) ◽  
pp. 171-176 ◽  
Author(s):  
F.P. Wesselingh ◽  
W.J.M. Peters ◽  
D.K. Munsterman
Keyword(s):  
North Sea ◽  
Marine Waters ◽  
Late Pliocene ◽  
Sea Floor ◽  
The North ◽  
Storm Wave ◽  
Southeastern Margin ◽  
The North Sea ◽  
Early Late ◽  
Commensal Relationship

AbstractA sea-floor assemblage from hardened sandstone boulders in which lingulid brachiopods predominate is recorded from the Oosterhout Formation near Balgoy (province of Gelderland, the Netherlands). Dinoflagellate cysts indicate a late Early-Late Pliocene (late Zanclean-Piacenzian) age of these boulders; the entire assemblage is indicative of clear marine waters near storm wave base along the southeastern margin of the North Sea Basin at the time. A possible commensal relationship between the lingulid brachiopods and the gastropod Calyptraea chinensis is implied.

scholarly journals Stratigraphy of Maastrichtian Foraminiferida from the United Kingdom; the Maastrichtian of Norfolk

2003 ◽  
Vol 82 (3) ◽  
pp. 233-245 ◽  
Author(s):  
M. Hart ◽  
T. Swiecicki
Keyword(s):  
United Kingdom ◽  
North Sea ◽  
Upper Cretaceous ◽  
North Coast ◽  
Flood Basalts ◽  
Glacial Sediments ◽  
The North ◽  
The United Kingdom ◽  
The North Sea ◽  
Atlantic Margin

AbstractOnshore Maastrichtian strata in the United Kingdom are limited to a few small, isolated blocks of chalk floating within glacial sediments on the Norfolk coast. Isolated outcrops of Campanian and Maastrichtian chalks used to be available around Norwich but the majority of these exposures are now badly degraded. Offshore, in the North Sea Basin, there are complete chalk successions that range throughout the Upper Cretaceous and Lower Cenozoic. There is a limited succession of Maastrichtian chalks exposed on the north coast of Northern Ireland below the Cenozoic flood basalts. In the Western Approaches Basin, Maastrichtian and Danian chalks are known from exploration wells and core samples. West of the United Kingdom a number of DSDP/ODP boreholes have penetrated the Upper Cretaceous succession.Beginning in the Cenomanian, in southeast England, the whole of the Upper Cretaceous is within the chalk facies, possibly one of the longest intervals of relatively stable environment in the geological record. The Foraminiferida of the chalk have been studied for more than a hundred years and therefore the fauna is exceptionally well known and fully documented. Fifty years ago, the benthonic Foraminiferida were identified as having the potential to provide a viable zonation of the chalk facies and we now have precise, cross-basinal correlation using these taxa.The planktonic fauna is restricted by both palaeolatitude and water depth. The latter appears to be the most influential as the faunas from onshore are more limited than those recorded from the deeper waters of the North Sea Basin and the Atlantic Margin. Even with this restricted fauna, however, it is still possible to develop a general correlation with the standard Tethyan zonation based on planktonic taxa.

XIV.—New Records of Polychætes from Scottish Coastal and Offshore Waters

1960 ◽  
Vol 67 (4) ◽  
pp. 351-362 ◽  
Author(s):  
A. D. McIntyre
Keyword(s):  
North Sea ◽  
Deep Water ◽  
West Coast ◽  
Coastal Waters ◽  
East Coast ◽  
New Records ◽  
North West ◽  
The North ◽  
The North Sea

SynopsisFrom a faunistic survey in Scottish waters, concentrated mainly in the sea lochs of the north-west coast and in the deep water in the North Sea off the east coast, thirty-two species of polychætes are listed which have not previously been recorded from these areas. Seven of the species are new records for British coastal waters or for the North Sea.

scholarly journals Mid-Paleocene palaeogeography of the Danish area

2002 ◽  
Vol 49 ◽  
pp. 171-186
Author(s):  
Ole R. Clausen ◽  
Mads Huuse
Keyword(s):  
North Sea ◽  
Upper Cretaceous ◽  
Marked Change ◽  
Tectonic Uplift ◽  
The North ◽  
Central Trough ◽  
Regional Tectonic ◽  
The North Sea

At the Danian/Selandian transition the North Sea Basin experienced a marked change, from deposition of almost pure carbonate during the Upper Cretaceous and Danian to deposition of greensand, marl and clay during the Selandian. Erosional features at the Top Chalk surface and the occurrence of an overlying conglomerate (transgressive lag deposit) indicates that large parts of the Danish area were subaerially exposed at the Danian/Selandian transition, probably due to regional tectonic uplift. Tectonically induced inversion of fault trends in the Central Trough and the Sorgenfrei- Tornquist Zone and differential relative subsidence between the Ringkøbing-Fyn High and the Norwegian-Danish Basin strongly affected the distribution of the lower Selandian sediments. Three palaeogeographic maps are presented to illustrate the various stages of the early Selandian transgression in order to demonstrate the mid-Paleocene evolution of the Danish area.

Jagtia kunradensis, a new genus and species of clawed lobster (Decapoda: Nephropidae) from the Upper Cretaceous (Upper Maastrichtian) Maastricht Formation, The Netherlands

2000 ◽  
Vol 74 (2) ◽  
pp. 224-229 ◽  
Author(s):  
Dale Tshudy ◽  
Ulf Sorhannus
Keyword(s):  
The Netherlands ◽  
Deep Water ◽  
Phylogenetic Relationships ◽  
Upper Cretaceous ◽  
New Genus ◽  
New Genus And Species ◽  
Type Area ◽  
Fossil Form ◽  
Upper Maastrichtian

A new genus and species of clawed lobster, Jagtia kunradensis, is described from the Upper Cretaceous (Upper Maastrichtian) Kunrade Limestone facies of the Maastricht Formation, The Netherlands. Three nephropid lobster genera and at least three species (Oncopareia bredai Bosquet, 1854, sensu Tshudy, 1993, Oncopareia sp. Tshudy, 1993, Hoploparia beyrichi Schlüter, 1862, and Jagtia kunradensis) have now been collected from limestones of the Maastrichtian type area (southeastern Netherlands and northeastern Belgium). Cladistic methods were employed in re-evaluating the phylogenetic relationships of the nephropid lobsters, including Jagtia. These analyses indicate that Jagtia is part of a clade that includes the recent Thymops and Thymopsis. The new genus is the first fossil form to be closely allied with these deep-water genera.

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
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