Geochronology and palaeoenvironment of marine Quaternary deposits in Denmark: new evidence from northern Jutland

1999 ◽  
Vol 136 (5) ◽  
pp. 561-578 ◽  
Author(s):  
H. P. SEJRUP ◽  
K. L. KNUDSEN
Keyword(s):  
North Sea ◽  
Atlantic Water ◽  
Marine Isotope Stage ◽  
Last Interglacial ◽  
The Holocene ◽  
The North ◽  
Hole Area ◽  
Northwest Europe ◽  
The North Sea ◽  
Late Weichselian

The degree of isoleucine epimerization in the benthic foraminiferal species Elphidium excavatum and Bulimina marginata have been measured in four boreholes, penetrating marine interglacial beds, from northern Jutland. The results of these analyses are compiled with results obtained from other sites in Denmark and the North Sea region, and four aminozones (AZs) have been erected. AZ1 (aIle/Ile < 0.05) include the Late Weichselian and the Holocene part of the record. AZ2 (0.08–0.12) includes samples of last interglacial age. AZ3 (0.14–0.16) includes samples from sites that have been previously correlated with the Holsteinian, and marine isotope stage 7 age for this zone is suggested. An age close to 400±100 ka is assigned to AZ4 (0.21–0.26). AZ4 is recorded in corings at Skagen and Nørre Lyngby, and includes the here defined Skagerrak Interglacial, which is tentatively correlated with marine isotope stage 11.The Skagerrak Interglacial sediments are characterized by boreal lusitanian benthic foraminiferal faunas evidencing strong input of Atlantic water to the North Sea. These faunas are replaced by assemblages indicating cooler conditions at least twice during this period. The sedimentation pattern in northern Jutland during this interglacial seems to be different from the sedimentation regimes in the same area at the classical Eemian sites and during the Holocene, which were characterized by large sediment input from the Jutland Current. This difference may be attributed to a change in the geometry of the sedimentary basin through the later part of the Quaternary, which is a result of repeated periods of intense erosion in the confluence area of the Norwegian Channel ice stream. A strong influx of Atlantic water to the North Sea during stage 11 has been suggested earlier, based on records from the Devil's Hole area. However, the correlation of this event to the classic biostratigraphic based schemes of northwest Europe is still problematic.

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.

Facing the Chop: Redefining British Antler Mattocks to Consider Larger-Scale Maritime Networks in the Early Fifth Millennium Cal BC

2015 ◽  
Vol 18 (2) ◽  
pp. 222-244 ◽  
Author(s):  
Benjamin Elliott
Keyword(s):  
North Sea ◽  
Critical Review ◽  
The North ◽  
Northwest Europe ◽  
Maritime Networks ◽  
The North Sea ◽  
Technological Analysis

This paper provides a critical review of Smith's (1989) typological discussion of the antler ‘mattocks’ of the British Mesolithic. The evidence for use of the term ‘mattock’ is assessed in relation to a new technological analysis of antler tools from Britain. In the light of the data presented here and developments in the study of Mesolithic osseous technologies from elsewhere in northwest Europe, a redefinition of the terminology and typology used to study these artefacts is presented. The potential for this redefinition to shape research across Mesolithic Europe is demonstrated through a discussion of the earliest occurrence of antler T-axes around the North Sea basin.

The Impact of Global Ice Sheet Evolution on North Sea Glacial Isostatic Adjustment during the Last Interglacial

2021 ◽  
Author(s):  
Oliver Pollard ◽  
Natasha Barlow ◽  
Lauren Gregoire ◽  
Natalya Gomez ◽  
Víctor Cartelle
Keyword(s):  
Sea Level ◽  
North Sea ◽  
Ice Sheets ◽  
Ice Sheet ◽  
Glacial Maximum ◽  
Last Interglacial ◽  
Isostatic Adjustment ◽  
The North ◽  
The North Sea ◽  
The Impact

&lt;p&gt;The Last Interglacial (LIG) period (130 - 115 ka) was the last time in Earth&amp;#8217;s history that the Greenland and Antarctic ice sheets were smaller than those of today due, in part, to polar temperatures reaching 3 - 5 &amp;#176;C above pre-industrial values. Similar polar temperature increases are predicted in the coming decades and the LIG period could therefore help to shed light on ice sheet and sea level mechanisms in a warming world.&lt;/p&gt;&lt;p&gt;The North Sea region is a promising study site for the reconstruction of both the magnitude and rate of LIG sea-level change as well as the identification of relative, individual ice sheet contributions to sea level. The impact of glacial isostatic adjustment (GIA) is particularly significant for the North Sea region due to its proximity to the former Eurasian ice sheet, which deglaciated during the penultimate deglaciation leading into the LIG. The evolution of the local Eurasian and global ice sheets during the penultimate glacial cycle has left a complex spatio-temporal pattern of GIA during the LIG, both regionally and globally. In addition, interpretation of the LIG record is further complicated by uncertainties in ongoing earth deformation and sea level evolution since the LIG. However, there are large uncertainties in the geometry and evolution of global ice sheets before the Last Glacial Maximum and, in particular, a major source of uncertainty for North Sea LIG records is the geometry and evolution of the Eurasian ice sheet during the Penultimate Glacial Maximum (PGM).&lt;/p&gt;&lt;p&gt;We produce a range of plausible global ice sheet histories spanning the last 400 thousand years that vary in penultimate deglaciation characteristics including glacial maximum ice sheet volume, deglaciation timing, and the ice volume distribution of the Eurasian ice sheet. This novel PGM Eurasian component is constructed with the use of a simple ice sheet model (Gowan et al. 2016) enabling systematic variation in the thickness of each ice sheet region within known uncertainty ranges. We then employ a gravitationally consistent sea level model (Kendall et al. 2005) with a range of viscoelastic Earth structure models to calculate the global GIA response to each ice history and to infer which input parameters the North Sea LIG signal is most sensitive to. This work will improve our understanding of the GIA effects on near field relative sea level during previous interglacials and will enable a systematic quantification of uncertainties in LIG sea level in the North Sea.&lt;/p&gt;

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