(Table 2) Age determination of sediment cores LO09/21-2 and SO82_4-2, supplement to: Moros, Matthias; Endler, Rudolf; Lackschewitz, Klas S; Wallrabe-Adams, Hans-Joachim; Mienert, Jürgen; Lemke, Wolfram (1997): Physical properties of Reykjanes Ridge sediments and their linkage to high-resolution Greenland Ice Sheet Project 2 ice core data. Paleoceanography, 12(5), 687-695

DOI

Five gravity cores taken from the Reykjanes Ridge have been used to establish a link between sediment physical properties and atmospheric records documented by d18O variations in Greenland ice cores over the last 45,000 calendar years. Marine Gamma Ray Attenuation Porosity Evaluator density and magnetic susceptibility variations could be linked with the ice core Dansgaard-Oeschger and Bond cycles. This is supported by ice-rafted detritus (IRD), grain size, the quartz/feldspar ratio, and carbonate, isotopic, and foraminiferal records. The covariation of the sediment physical properties and d18O in Greenland ice indicates a coupling of atmospheric temperature and paleocirculation variations. Gradual reduced bottom currents (Iceland-Scotland Overflow Water) and enhanced iceberg discharges have been reconstructed for cold atmospheric periods relative to interstadial times. In the study area the magnetic susceptibility signal is not related to the ice-rafted detritus input but most probably reflects the variations of the Iceland-Scotland Overflow Water intensity transporting titanomagnetite into the Reykjanes Ridge region.

Identifier
DOI http://dx.doi.org/doi:10.1594/PANGAEA.868816
Metadata Access http://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite3&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.868816
Provenance
Creator Lemke, Wolfram;Mienert, Jürgen;Moros, Matthias;Endler, Rudolf;Lackschewitz, Klas S;Wallrabe-Adams, Hans-Joachim
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 1997
Rights Creative Commons Attribution 3.0 Unported (CC-BY)
Representation
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Coverage
Discipline Earth System Research
Spatial Coverage (59N-59N,31W-30W)
Temporal Point 1992-10-20T11:59:59Z