Bukar Shettima bukar@uni-bremen.de 0000-0003-4154-6045 Department of Geosciences, Bremen University GeoB http://www.geo.uni-bremen.de/page.php?langid=EN https://ror.org/04ers2y35 von Dobeneck Tilo tvondobeneck@marum.de 0000-0002-0087-4053 Department of Geosciences, Bremen University GeoB http://www.geo.uni-bremen.de/page.php?langid=EN https://ror.org/04ers2y35 MARUM - Center for Marine Environmental Sciences, University Bremen MARUM http://www.marum.de/ https://ror.org/04ers2y35 2025 Grain-size distribution and grain-size dependent magnetic susceptibility of sediment core GeoB18530-1 dataset https://doi.org/10.1594/PANGAEA.971771 2025-10-20T06:26:17 https://doi.org/10.1594/PANGAEA.971785 Since the weight percentages of (classifiable) IRD particles > 1 mm and (unclassifiable, but separable) IRD particles > 125 µm both largely underestimate the total content and magnetic impact of IRD, it is important to quantify also the finer IRD fractions and their magnetic susceptibilities. From each of the IRD-rich sediment units H1, I1 and H2, six magnetic cube samples of 6.2 cm³ each were combined, dried, weighed and ultrasonically suspended in water. These three slurries were successively washed through 16 stacked sieves with mesh sizes in approximately 0.5 phi steps from 4000 µm to 5 µm using a Fritsch wet sieve shaker. The sieve fractions were carefully collected, dried, weighed and measured in a Kappabridge KLY2 susceptometer. The data and therefrom-derived partial susceptibilities and cumulative distributions clearly demonstrate that the magnetically most dominant and "volatile" sediment particles fall into the 40-125 µm range. Detrital particles of such sizes are too coarse to have been current-transported over long distances and were therefore probably at least partially ice-rafted. Bukar Shettima bukar@uni-bremen.de 0000-0003-4154-6045 von Dobeneck Tilo tvondobeneck@marum.de 0000-0002-0087-4053 Wang Yiyun yiyunwang@163.com Max Lars lmax@marum.de https://www.awi.de/en/about-us/organisation/staff/single-view/lars-max.html 0000-0002-8637-4032 Frederichs Thomas frederichs@uni-bremen.de 0000-0003-0976-0332 Dallanave Edoardo edoardo@uni-bremen.de 0000-0003-4673-1792 St-Onge Guillaume 2025 Ice-Rafted Detritus of the Southeast Grand Banks Slope, Newfoundland, Throughout Heinrich Layers 1 to 5a: 2. Magnetic Properties journal article Geochemistry, Geophysics, Geosystems 26(10) https://doi.org/10.1029/2024GC011931 e2024GC011931 von Dobeneck Tilo tvondobeneck@marum.de 0000-0002-0087-4053 Bukar Shettima bukar@uni-bremen.de 0000-0003-4154-6045 2025 Petrological classification and lithology-specific abundance analysis of ice-rafted detritus (IRD) of sediment core GeoB18530-1 dataset bundled publication https://doi.org/10.1594/PANGAEA.971290 -49.234833333333 -49.234833333333 42.8395 42.8395 -49.234833333333 42.8395 2014-06-14T13:58:00 2014-06-14T13:58:00 5.833 6.6035 ArcTrain Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic MARUM - Center for Marine Environmental Sciences, University Bremen MARUM http://www.marum.de/ https://ror.org/04ers2y35 German Research Foundation DFG http://www.dfg.de/en/ https://doi.org/10.13039/501100001659 221211316 GRK/IRTG 1904: ArcTrain - Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic https://gepris.dfg.de/project/221211316 Petroleum Technology Development Fund PTDF https://ptdf.gov.ng https://doi.org/10.13039/501100009614 Shettima Bukar Overseas postgraduate scholarship to Shettima Bukar GeoB18530-1 509-1 42.8395 -49.234833333333 SE Grand Banks Slope -1888.0 2014-06-14T13:58:00 MSM39 MSM39 St. John's, Canada 2014-06-07T00:00:00 2014-06-07 St. John's, Canada 2014-06-25T00:00:00 2014-06-25 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Mulitza, Stefan Mulitza, Stefan doi:10.2312/cr_msm39 20140069 hdl:10013/epic.44783.d025 hdl:10013/epic.44804.d096 Maria S. Merian https://en.wikipedia.org/wiki/RV_Maria_S._Merian DBBT 9274197 Gravity corer GC 10.74 m 336 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Corresponds to Figure 6. DEPTH, sediment/rock Depth sed m depth http://purl.obolibrary.org/obo/PATO_0001595 sediment http://purl.obolibrary.org/obo/ENVO_00002007 rock Length L http://dbpedia.org/resource/Length Calculated Depth sed [m] Depth, sediment/rock, top/minimum Depth sed top m depth http://purl.obolibrary.org/obo/PATO_0001595 sediment http://purl.obolibrary.org/obo/ENVO_00002007 rock http://purl.obolibrary.org/obo/ENVO_00001995 minimum Length L http://dbpedia.org/resource/Length Wang Yiyun yiyunwang@163.com six pooled 6.2 cm³ cube samples Depth sed top [m] Depth, sediment/rock, bottom/maximum Depth sed bot m depth http://purl.obolibrary.org/obo/PATO_0001595 sediment http://purl.obolibrary.org/obo/ENVO_00002007 rock http://purl.obolibrary.org/obo/ENVO_00001995 maximum Length L http://dbpedia.org/resource/Length Wang Yiyun yiyunwang@163.com six pooled 6.2 cm³ cube samples Depth sed bot [m] Heinrich event Heinrich event Bukar Shettima bukar@uni-bremen.de 0000-0003-4154-6045 HE stratigraphy based on Ca/Sr Heinrich event Grain size, minimum Grain size min µm size http://purl.obolibrary.org/obo/PATO_0000117 minimum Length L http://dbpedia.org/resource/Length Wet sieve shaker Bukar Shettima bukar@uni-bremen.de 0000-0003-4154-6045 200 mm Ø nylon and inox sieves Grain size min [µm] Grain size, maximum Grain size max µm size http://purl.obolibrary.org/obo/PATO_0000117 maximum Length L http://dbpedia.org/resource/Length Wet sieve shaker Bukar Shettima bukar@uni-bremen.de 0000-0003-4154-6045 200 mm Ø nylon and inox sieves Grain size max [µm] Size fraction Size fraction % size http://purl.obolibrary.org/obo/PATO_0000117 Fraction Dimensionless Ratio ψ Precision scale, Sartorius Bukar Shettima bukar@uni-bremen.de 0000-0003-4154-6045 Accuracy 0.1 mg Size fraction [%] Magnetic susceptibility MAGS m**3/kg Kappabridge, AGICO KLY-2 Bukar Shettima bukar@uni-bremen.de 0000-0003-4154-6045 MAGS [m**3/kg] CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable Geochemistry grain size distribution Grand Banks Margin Heinrich events Ice-Rafted Detritus Rock magnetism author106434 author106435 author107431 author31246 author592 author625 author72407 award3203 award441 basis650 campaign3379933 campaign39854 curlevel30 event2742866 funder20472 funder21639 geocode1 geocode1599 geocode1600 geocode1601 geocode8128 inst277 inst4 journal6006 license21 method11107 method12808 method16372 method50 method8026 param106516 param106530 param518755 param518756 param523400 param90739 param93675 pi106434 pi106435 project4526 ref127255 refds971290 term1073130 term1073131 term1073132 term1073204 term267 term31208 term38263 term38492 term41019 term41056 term429 term43794 term43863 term44034 term53368 term54469 term693 term74472 term77756