A paleoenvironmental reconstruction of the early late Paleocene North Sea from intrashell delta δ18O and delta δ13C profiles of mollusks

2003 ◽  
Author(s):  
Birger Schmitz ◽  
Elisabeth I. Thompson ◽  
Lennart Bornmalm ◽  
Claus Heilmann-Clausen
Keyword(s):  
North Sea ◽  
Paleoenvironmental Reconstruction ◽  
Late Paleocene ◽  
Early Late

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.

Systematic position of Litomylus(?) alphamon Van Valen (Mammalia: Insectivora): further evidence for the Late Paleocene age of Swan Hills Site-1 in the Paskapoo Formation of Alberta

1986 ◽  
Vol 60 (5) ◽  
pp. 1135-1137
Author(s):  
Philip D. Gingerich
Keyword(s):  
Systematic Position ◽  
Primate Species ◽  
Tectonic Deformation ◽  
Mammalian Fauna ◽  
North Central ◽  
The North ◽  
Late Paleocene ◽  
Land Mammal ◽  
Early Late ◽  
North Latitude

The Swan Hills are erosional remnants of a once-continuous plateau lying between the Athabaska River and Lesser Slave Lake in the north-central part of Alberta, western Canada. Fossils were first discovered in the Paskapoo Formation here in 1964 by L. S. Russell, who described a small mammalian fauna from Swan Hills Site-1 (Russell, 1967). Russell's collection from Site-1 was interpreted (correctly) as representing the Tiffanian Land-Mammal Age (Late Paleocene). Of particular interest, Russell (1967) described a new primate species of the plesiadapiform family Carpolestidae, “Carpolestes” cygneus, based on fragmentary remains from Site-1. This species was later transferred to Carpodaptes by Rose (1975). Judging from the evolutionary grade of Carpodaptes cygneus, Rose (1977) regarded Swan Hills Site-1 as early or early middle Tiffanian in age. Additional work on C. cygneus at other Canadian sites indicated that Site-1 might be early late Tiffanian in age (Krause, 1978). This distinction is important because Carpodaptes has a more detailed evolutionary record in Wyoming and Montana, and correct attribution of the name C. cygneus, originally based on three isolated teeth, to samples better known elsewhere necessarily requires precise correlation. The holotype and type sample of C. cygneus, by themselves, are too fragmentary and limited to characterize the species. Species of Carpodaptes are among the most common and useful fossils available for precise dating of sediments associated with Laramide tectonic deformation in the Western Interior. At 55° north latitude, Swan Hills Site-1 remains the most northerly locality in North America yielding Paleocene mammals.

Dinoflagellate cyst stratigraphy and palaeoecology of the Pliocene in northern Belgium, southern North Sea Basin

2004 ◽  
Vol 141 (3) ◽  
pp. 353-378 ◽  
Author(s):  
STEPHEN LOUWYE ◽  
MARTIN J. HEAD ◽  
STIJN DE SCHEPPER
Keyword(s):  
North Sea ◽  
Dinoflagellate Cysts ◽  
Early Pliocene ◽  
Dinoflagellate Cyst ◽  
Sequence Stratigraphic ◽  
Southern North Sea ◽  
New Information ◽  
First Time ◽  
Early Late ◽  
Depositional Cycle

Dinoflagellate cysts and other palynomorphs from the Pliocene Kattendijk and Lillo formations, exposed in two temporary outcrops in northern Belgium, provide new information on the biostratigraphic position and sequence stratigraphic interpretation of these units. Dinoflagellate cysts from the Kattendijk Formation indicate an age between about 5.0 Ma and 4.7–4.4 Ma (early Early Pliocene) in our sections, confirming a correlation with standard sequence 3.4 and implying a slightly greater age than the Ramsholt Member of the Coralline Crag Formation of eastern England. The unconformity at the base of the Kattendijk Formation was not seen, but presumably correlates with sequence boundary Me2 at 5.73 Ma. The overlying Lillo Formation is late Early Pliocene or early Late Pliocene (c. 4.2–2.6 Ma) in age, and the unconformity at its base may be correlated with sequence boundary Za2 at 4.04 Ma or Pia1 at 3.21 Ma. The Oorderen Sands and superjacent Kruisschans Sands members (Lillo Formation) are both part of the same depositional cycle. They were probably deposited before 2.74 Ma, and certainly before the onset of Northern Hemisphere cooling at c. 2.6 Ma. Evidence from dinoflagellate cysts indicates that both a shelly unit at the base of the Lillo Formation and the lower part of the overlying Oorderen Sands were deposited during a conspicuously cool climatic phase, with warmer temperatures returning during later deposition of the Oorderen Sands and Kruisschans Sands members. Many dinoflagellate cyst and acritarch species are reported here for the first time from the southern North Sea Basin. Selenopemphix conspicua (de Verteuil & Norris, 1992) stat. nov. is proposed.

scholarly journals Differentiation of Palaeogene sand by glauconitic and geochemical fingerprinting, Siri Canyon, Danish North Sea

1969 ◽  
Vol 23 ◽  
pp. 17-20
Author(s):  
Mette Olivarius ◽  
Christian Knudsen ◽  
Johan B. Svendsen
Keyword(s):  
North Sea ◽  
Seismic Data ◽  
Horizontal Wells ◽  
Oil Field ◽  
Oil Reservoirs ◽  
Early Eocene ◽  
Vertical Wells ◽  
Geochemical Fingerprinting ◽  
Core Samples ◽  
Late Paleocene

The submarine Siri Canyon is NE–SW-oriented and located in the Danish North Sea (Fig. 1). It contains a number of oil reservoirs with glauconite-rich sand. The reservoirs of interest in the Nini oil field are the Late Paleocene Tyr Member of the Lista Formation and the Kolga Member of the Sele Formation (Schiøler et al. 2007), presumably of Early Eocene age. These members have previously been known as the Ty and Hermod members (Hamberg et al. 2005; Poulsen et al. 2007). The sand shows signs of injection, both in cores and in seismic data. The aim of this work is to chemically characterise and fingerprint the sand in order to reveal the origin of the sand found in three horizontal wells, which could have been injected from one or both of the Tyr and Kolga members. Core samples were collected from two vertical wells of known stratigraphy to make a basis of comparison, whereas samples of the cuttings were collected from the three horizontal wells with ages primarily corresponding to the Kolga Member. The purpose was moreover to evaluate whether cuttings samples can be used for fingerprinting as an alternative to core samples.

scholarly journals Early Cretaceous

1982 ◽  
Vol 8 ◽  
pp. 45-49
Author(s):  
Jens Morgen Hansen ◽  
Arne Buch
Keyword(s):  
North Sea ◽  
Early Cretaceous ◽  
Late Cretaceous ◽  
Late Jurassic ◽  
Significant Feature ◽  
Marine Clay ◽  
The North ◽  
Marine Sand ◽  
The North Sea ◽  
Early Late

The Early Cretaceous sea primarily covered the same basinal regions as the Late Jurassic sea but, late in the Early Cretaceous the sea also covered Late Jurassic land masses. During Early Cretaceous time the topography of the North Sea region became gradually buried. The following major transgression comprises the transition Early/Late Cretaceous. At the Jurassic/ Cretaceous transition, the Late Cimmerian unconformity is a significant feature (fig. 24), known from large parts of the North Sea region. The subsequent transgression and sedimentation of marine clay (the Valhall Formation), and marine sand (the LC-1 Unit), started late in Late Jurassic. Therefore, the formations described in the present chapter also comprise sediments of Late Jurassic age. Thicknesses of the Lower Cretaceous sediments are given in fig. 15.

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