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Bukar, Shettima; Lisker, Frank; von Dobeneck, Tilo; Mulitza, Stefan: Lithology-specific IRD counts of sediment core GeoB18530-1 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.971280 (dataset in review), In: von Dobeneck, Tilo; Bukar, Shettima: Petrological classification and lithology-specific abundance analysis of ice-rafted detritus (IRD) of sediment core GeoB18530-1 [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.971290 (dataset in review)

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Abstract:
Total and lithology-specific ice-rafted detritus (IRD) counts of sediment core GeoB18530-1 were determined by stereomicroscopically identifying, picking and counting all recognizable IRD grains from the > 1mm dry sieve fraction, which had been obtained from the 125 µm wet sieve fraction of 10 cm^3 ultrasonically dispersed sediment (10 ml syringe sample). Total IRD counts vary between 1 and 300 grains per sample, i.e. 0.1 to 3 IRD grains/cm^3. The IRD lithologies were initially sorted by their physical properties including color, hardness, cleavage, grain size, and texture. Based on these stereomicroscopic observations, we devised a new (and evolving) IRD classification scheme of rocks and rock-forming minerals that was validated and refined by SEM and thin section analysis of the largest observed IRD particles (dropstones). Digital micrographs and thin sections of each classified IRD lithology are presented in dataset (https://doi.pangaea.de/10.1594/PANGAEA.971268).
Keyword(s):
Grand Banks Margin; Heinrich events; Ice-Rafted Detritus; Petrology
Related to:
Bukar, Shettima; Lisker, Frank; von Dobeneck, Tilo; Max, Lars; Wang, Yiyun; Lenz, Marlene M; Mulitza, Stefan; St-Onge, Guillaume; Piper, David (submitted): Ice-Rafted Detritus (IRD) of the SE Grand Banks Slope, Newfoundland, Throughout Heinrich Layers 1 to 6 - Part I: Petrology and Abundance. Geochemistry, Geophysics, Geosystems
Project(s):
Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic (ArcTrain)
Funding:
German Research Foundation (DFG), grant/award no. 221211316: GRK/IRTG 1904: ArcTrain - Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic
Petroleum Technology Development Fund (PTDF), grant/award no. Shettima Bukar: Overseas postgraduate scholarship to Shettima Bukar
Coverage:
Latitude: 42.839500 * Longitude: -49.234833
Date/Time Start: 2014-06-14T13:58:00 * Date/Time End: 2014-06-14T13:58:00
Minimum DEPTH, sediment/rock: 5.601 m * Maximum DEPTH, sediment/rock: 10.468 m
Event(s):
GeoB18530-1 (509-1) * Latitude: 42.839500 * Longitude: -49.234833 * Date/Time: 2014-06-14T13:58:00 * Elevation: -1888.0 m * Recovery: 10.74 m * Location: SE Grand Banks Slope * Campaign: MSM39 * Basis: Maria S. Merian * Method/Device: Gravity corer (GC)
Comment:
Corresponds to Figure 4.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DEPTH, sediment/rockDepth sedmBukar, ShettimaGeocode – Stratigraphy based on Ca/Sr
2Heinrich eventHeinrich eventBukar, Shettima
3Ice rafted detritusIRD#/cm3Bukar, ShettimaCounting >1000 µm fractionSieved sediment volume: 10 ml
4Ice rafted detritus, Muscovite-Biotite GraniteIRD Ms-Bt Granite#/cm3Bukar, ShettimaCounting >1000 µm fraction
5Ice rafted detritus, Hornblende GraniteIRD Hbl Granite#/cm3Bukar, ShettimaCounting >1000 µm fraction
6Ice rafted detritus, Biotite GraniteIRD Bt Granite#/cm3Bukar, ShettimaCounting >1000 µm fraction
7Ice rafted detritus, Garnet GabbroIRD Grt Gabbro#/cm3Bukar, ShettimaCounting >1000 µm fraction
8Ice rafted detritus, QuartzIRD Quartz#/cm3Bukar, ShettimaCounting >1000 µm fraction
9Ice rafted detritus, MicroclineIRD Microcline#/cm3Bukar, ShettimaCounting >1000 µm fraction
10Ice rafted detritus, TonaliteIRD Tonalite#/cm3Bukar, ShettimaCounting >1000 µm fraction
11Ice rafted detritus, DoleriteIRD Dolerite#/cm3Bukar, ShettimaCounting >1000 µm fraction
12Ice rafted detritus, Olivine BasaltIRD Ol Basalt#/cm3Bukar, ShettimaCounting >1000 µm fraction
13Ice rafted detritus, ScoriaIRD Scoria#/cm3Bukar, ShettimaCounting >1000 µm fraction
14Ice rafted detritus, ObsidianIRD Obsidian#/cm3Bukar, ShettimaCounting >1000 µm fraction
15Ice rafted detritus, Ooid-bearing DolomiteIRD Ooid Dolomite#/cm3Bukar, ShettimaCounting >1000 µm fraction
16Ice rafted detritus, Sucrosic DolomiteIRD Sucr Dolomite#/cm3Bukar, ShettimaCounting >1000 µm fraction
17Ice rafted detritus, CalciteIRD Calcite#/cm3Bukar, ShettimaCounting >1000 µm fraction
18Ice rafted detritus, MudstoneIRD Mudstone#/cm3Bukar, ShettimaCounting >1000 µm fraction
19Ice rafted detritus, Quartz WackeIRD Quartz Wacke#/cm3Bukar, ShettimaCounting >1000 µm fraction
20Ice rafted detritus, GreywackeIRD Greywacke#/cm3Bukar, ShettimaCounting >1000 µm fraction
21Ice rafted detritus, Hematite-coated quartzIRD Hem Quartz#/cm3Bukar, ShettimaCounting >1000 µm fraction
22Ice rafted detritus, ShaleIRD Shale#/cm3Bukar, ShettimaCounting >1000 µm fraction
23Ice rafted detritus, Shocked QuartzIRD Shocked Quartz#/cm3Bukar, ShettimaCounting >1000 µm fraction
24Ice rafted detritus, Biotite SchistIRD Bt Schist#/cm3Bukar, ShettimaCounting >1000 µm fraction
25Ice rafted detritus, AmphiboliteIRD Amphibolite#/cm3Bukar, ShettimaCounting >1000 µm fraction
26Ice rafted detritus, othersIRD others#/cm3Bukar, ShettimaCounting >1000 µm fraction
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
5250 data points

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