Modern benthic foraminifera census and grain-size of surface sediments offshore Thwaites Glacier, Antarctica

• Main Authors: Lehrmann, Asmara A, Totten, Rebecca, Wellner, Julia S, Hillenbrand, Claus-Dieter
• Format: Dataset
• Language: English
• Published: PANGAEA 2024
• Subjects: Adercotryma glomeratum; Ammodiscus incertus; Amundsen Sea; Antarctica; BC; Box corer; Bulimina aculeata; Cibicides spp.; Counting; dead foraminifera/empty tests; rose-bengal stained foraminifera; Cyclammina spp.; DEPTH; sediment/rock; Distance to 100 m isobath; Ehrenbergina glabra; Elevation of event; Epistominella spp.; Eratidus foliaceus; Event label; Fissurina spp.; Foraminifera; benthic; total; benthic agglutinated; other; benthic calcareous; Fursenkoina spp.; Globocassidulina spp.; Grain Size; CILAS Laser Particle Analyser; Hormosinella spp.; Lagena cf. hispidula; Lagena elongata; Lagenammina tubulata; Latitude of event; Longitude of event; MEGAC; MegaCorer; Miliammina arenacea; Nathaniel B. Palmer; NBP19-02; NBP19-02_BC28; NBP19-02_MC06; Thwaites Glacier; Antarc*
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.965758; https://doi.org/10.1594/PANGAEA.965758

This dataset includes two procedures: grain-size measurements and modern (rose-bengal stained) benthic foraminifera census offshore Thwaites Glacier. Sediment underwent staining with a rose-bengal ethanol solution for a minimum of 24 hours. Subsequently, the samples were dried, split, and identified for the foraminifera census. Grain-size measurements were conducted on approximately five cubic centimeters of a duplicate Multicore. Thesamples were dispersed using a sodium hexametaphosphate solution for at least 24 hours before being analyzed with a Cilas 1190 laser particle size analyzer. The grain size is reported based on the diameter at which a certain percentage of grains are coarser. For instance, the D90 measurement signifies the diameter at which 90% of grains are coarser.