PANGAEA_968898 Concentrations of export production indicators and corrected and non-corrected accumulation rates of indicators of opal, Carbonates, Fe, TOC and Barium excess from core PS97/093-2 over the past 1.4 Ma Toyos, Maria H; Lamy, Frank; Lange, Carina Beatriz; Abell, Jordan T; Lembke-Jene, Lester; Arz, Helge Wolfgang; Winckler, Gisela Concentrations of export production indicators and corrected and non-corrected accumulation rates of indicators of opal, Carbonates, Fe, TOC and Barium excess from core PS97/093-2 over the past 1.4 Ma 2025-01-31 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.968898 Earth Science DEPTH, sediment/rock AGE Opal, biogenic silica Calcium carbonate Iron Barium excess Carbon, organic, total Density, dry bulk Sortable-silt mean Focusing factor Accumulation rate, bulk mass Accumulation rate, bulk mass, opal Accumulation rate, bulk mass, calcium carbonate Accumulation rate, bulk mass, iron Accumulation rate, bulk mass, barium, excess Accumulation rate, bulk mass, carbon, organic, total Accumulation rate, bulk mass, standard error Accumulation rate, bulk mass, opal, standard error Accumulation rate, bulk mass, calcium carbonate, standard error Accumulation rate, bulk mass, iron, standard error Accumulation rate, bulk mass, barium, excess, standard error Accumulation rate, bulk mass, carbon, organic, total, standard error geoscientificInformation Accumulation rate Export Production focusing factor Paleoceanography paleoproductivity. Piston corer PS97 PS97/093-2 Southern Ocean Subantarctic zone Calculated Corrected Polarstern 2016-03-20 2016-03-20 Complete -57.49917 -57.49917 -70.27467 -70.27467 0.0 m (DEPTH, sediment/rock) 16.38 m (DEPTH, sediment/rock) Helmholtz_ChangingEarth Changing Earth – Sustaining our Future 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 6188 data points text/tab-separated-values Toyos, Maria H; Lamy, Frank; Lange, Carina Beatriz; Abell, Jordan T; Lembke-Jene, Lester; Arz, Helge Wolfgang; Winckler, Gisela (2025): A New Perspective on Past Export Production in the Subantarctic South Pacific for the Last ∼1.4 Myr. Paleoceanography and Paleoclimatology, 40(2), e2024PA004929, https://doi.org/10.1029/2024PA004929

Studying oceanic particle fluxes from sediment records is an important component of paleoceanography. Traditionally, we calculate these fluxes using a combination of linear sedimentation rates derived from age models and sediment density, known as age model-derived bulk mass accumulation rates (BMAR). However, BMAR and the resulting paleoceanographic interpretations may suffer from substantial errors if lateral redistribution of sediments is not considered. In fact, this is expected to be a common phenomenon in the Southern Ocean due to the strong bottom water circulation induced by the Antarctic Circumpolar Current. In the study associated to this dataset, we assess export production and its drivers over the past ~1.4 Myr near the Drake Passage entrance using BMAR of biogenic Barium, organic carbon, biogenic opal, calcium carbonate, and iron from sediment core PS97/093-2, all of which are corrected for lateral sediment redistribution (corr-BMAR). To quantify this correction, we explore the relationship between sortable silt as a bottom current strength proxy and 230Th-derived focusing factors as indicators of lateral redistribution of sediments, respectively. Therefore, this dataset includes the following data: Concentrations of export production indicators (opal, Carbonates, Fe, total organic carbon, and excess of Barium), dry bulk density, sortable silt (averaged between tie points), calculated focusing factors, and corrected and non-corrected accumulation rates of export production indicators of core PS97/093-2 over the past 1.4 million years. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.968898"!

http://en.wikipedia.org/wiki/Kyr AGE https://doi.org/10.1029/2024PA004929 A New Perspective on Past Export Production in the Subantarctic South Pacific for the Last ∼1.4 Myr https://doi.org/10.17815/jlsrf-3-163 Polarstern https://earthenvironment.helmholtz.de/changing-earth/program/ Helmholtz_ChangingEarth https://store.pangaea.de/Images/Cores/PS-stationcard/PS97_093-stationcard.pdf PS97/093-2 DIF 9.4 2025-01-31 2026-07-15