Interglacial and glacial climate oscillations in a marine shelf sequence from northern denmark — a multidisciplinary study

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

“…In order to obtain a core with 100% recovery through this interglacial unit, a new drilling (Nørre Lyngby 2) was carried out at almost the same location in 1993. Foraminifera, ostracods, macrofossils, diatoms (Kristensen et al 1998) and pollen (Glaister & Gibbard, 1998) indicate the presence of an interglacial unit between 70-61 m below present-day sea level in this core. The distribution of a few selected foraminiferal species and amino-acid ratios are shown in Figure 6.…”

“…Almost all (see also Kristensen et al (1998)) are based on the addeddose technique (Aitken, 1992(Aitken, , 1994Wintle, 1994) using K-feldspar grains (0.1-0.3 mm). OSL dating was performed on material from four different levels in the Nørre Lyngby core and from two in the Skagen core.…”

“…Figure 6. Frequency of selected foraminiferal species from the Nørre Lyngby 2 boring (see also Kristensen et al 1998)). The grain-size curve for the sand fraction > 0.063 mm is shown to the left together with results of the OSL datings.…”

“…In general, the faunal distribution reflects temperature conditions warmer than at present, and the appearance of the arctic species (including arctic planktonic species) has been interpreted as the result of changes in the North Atlantic surfacewater circulation during the interglacial (Seidenkrantz, Kristensen & Knudsen, 1995;Kristensen et al 1998). Based on the interpretation of the foraminiferal assemblages and OSL datings, the interglacial deposit at Nørre Lyngby has been referred to the Eemian Interglacial and correlated with oxygen-isotope substage 5e (Seidenkrantz, Kristensen & Knudsen, 1995;Kristensen et al 1998). Pollen analytical data have been interpreted to support this conclusion (Glaister & Gibbard, 1998).…”

“…Because the amino-acid data suggest a more complex stratigraphy of the Quaternary of the northern Jutland region than previously suggested, we see the need for erecting a local nomenclature. Therefore, following Hedberg (1976), we define the climatostratigraphic unit the Skagerrak Interglacial as the climatic event recorded between 61 and 70 m depth in the coring at Nørre Lyngby (Kristensen et al 1998). …”