PANGAEA_971771 Grain-size distribution and grain-size dependent magnetic susceptibility of sediment core GeoB18530-1 Bukar, Shettima; von Dobeneck, Tilo Grain-size distribution and grain-size dependent magnetic susceptibility of sediment core GeoB18530-1 2025-10-20 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.971771 Investigator Yiyun Wang yiyunwang@163.com Investigator Shettima Bukar bukar@uni-bremen.de Earth Science DEPTH, sediment/rock Depth, sediment/rock, top/minimum Depth, sediment/rock, bottom/maximum Heinrich event Grain size, minimum Grain size, maximum Size fraction Magnetic susceptibility geoscientificInformation 509-1 GeoB18530-1 Geochemistry grain size distribution Grand Banks Margin Gravity corer Heinrich events Ice-Rafted Detritus MSM39 Rock magnetism Calculated Wet sieve shaker Precision scale, Sartorius Kappabridge, AGICO KLY-2 Maria S. Merian 2014-06-14 2014-06-14 Complete 42.8395 42.8395 -49.234833333333 -49.234833333333 5.833 m (DEPTH, sediment/rock) 6.6035 m (DEPTH, sediment/rock) ArcTrain Processes and impacts of climate change in the North Atlantic Ocean and the Canadian Arctic unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 336 data points text/tab-separated-values Bukar, Shettima; von Dobeneck, Tilo; Wang, Yiyun; Max, Lars; Frederichs, Thomas; Dallanave, Edoardo; St-Onge, Guillaume (2025): Ice-Rafted Detritus of the Southeast Grand Banks Slope, Newfoundland, Throughout Heinrich Layers 1 to 5a: 2. Magnetic Properties. Geochemistry, Geophysics, Geosystems, 26(10), e2024GC011931, https://doi.org/10.1029/2024GC011931 von Dobeneck, Tilo; Bukar, Shettima (2025): Petrological classification and lithology-specific abundance analysis of ice-rafted detritus (IRD) of sediment core GeoB18530-1 [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.971290

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. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.971771"! ** Corresponds to Figure 6.

https://doi.org/10.1029/2024GC011931 Ice-Rafted Detritus of the Southeast Grand Banks Slope, Newfoundland, Throughout Heinrich Layers 1 to 5a: 2. Magnetic Properties https://doi.pangaea.de/10.1594/PANGAEA.971290 Petrological classification and lithology-specific abundance analysis of ice-rafted detritus (IRD) of sediment core GeoB18530-1 https://en.wikipedia.org/wiki/RV_Maria_S._Merian Maria S. Merian PANGAEA_971785 DIF 9.4 2025-10-20 2026-07-16