Ice rafted debris flux and composition of sediment core PS93/025

DOI

IRD flux and the corresponding petrographic grain composition. The sampled sediment record PS93/025, consisting of the Giant box core (GKG) PS93/025-1 (80.481°N, 8.487°W, 291.3 m water depth) and the Kastenlot core (KAL) PS93/025-2 (80.482°N, 8.490°W, 290.2 m water depth), was obtained during the expedition PS93.1 (2015) (Stein, 2016) of RV Polarstern on the outermost NE Greenland shelf in the western Fram Strait. The presented data covers the last ca. 10.6 ka. Ice-rafted debris counts were performed on the >150 μm fraction at steps of 5 cm. The results are expressed as flux rates (grains/cm2*ka). Additionally, the corresponding petrographic grain composition was analyzed to determine the source area(s) of these lithic particles by using the following groups: (a) clastic sedimentary rocks (e.g. siltstones); (b) metamorphic rocks (e.g. quartzites), volcanic rocks (e.g. basalt), olivine grains, volcanic glass shards, mica; (c) crystalline rocks, quartz and feldspar; (d) limestones and dolomites. Rounded grains were specified following St John et al. (2015) to identify the influence of sea-ice sediments. In this study, grains with subrounded and rounded shape were counted and grouped as "rounded." Aim of the study was to reconstruct the climatic and paleoceanographic variability offshore Northeast Greenland during the last ca. 10ka with multidecadal resolution.

Identifier
DOI https://doi.org/10.1594/PANGAEA.923852
Related Identifier https://doi.org/10.1177/0959683620950393
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.923852
Provenance
Creator Zehnich, Marc ORCID logo
Publisher PANGAEA
Publication Year 2020
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 324 data points
Discipline Earth System Research
Spatial Coverage (-8.490W, 80.481S, -8.487E, 80.482N); North Greenland Sea
Temporal Coverage Begin 2015-07-08T01:10:00Z
Temporal Coverage End 2015-07-08T02:20:00Z