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Particle-size distributions of Eocene-Oligocene sediment from ODP Site 696, South Orkney Microcontinent Data DOI: https://doi.org/10.15784/601581 Cite as Passchier, S., Horowitz Castaldo, J., Lepp, A., & Light, J. (2022) "Particle-size distributions of Eocene-Oligocene sediment from ODP Site 696, South Orkney Microcontinent" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601581. AMD - DIF Record(s) USAP-1743643_1 Abstract This dataset contains measurements of terrigenous particle-size distributions on Eocene-Oligocene sediment from Ocean Drilling Program Site 696 drilled in 650 m water depth on the South Orkney Microcontinent. Carbonate and organic matter were removed through addition of 10mL aliquots of 30% H2O2, 2mL aliquots of 10% HCl to ~50-100mL suspension on a hot plate. Diatoms were generally either absent or present in trace amounts in the Eocene-Oligocene interval and were not removed. Dispersion was through heating with sodium pyrophosphate. Samples were measured on a Malvern Mastersizer 2000 with a Hydro 2000MU (A) accessory, using a Refractive Index of 1.6 (Illite) and an absorption coefficient of 0.9. Results are in (vol. %) per size class, with diameter range equivalent to the diameter of spheres with the same volume as measured particles. Creator(s): Passchier, Sandra; Lepp, Allison; Horowitz Castaldo, Josie; Light, Jennifer Date Created: 2022-06-21 Repository: USAP-DC (current) License: Creative Commons Attribution Only v4.0 Generic [CC BY 4.0] Spatial Extent(s) West: -42.933, East: -42.933, South: -61.849, North: -61.849 Award(s) NSF 1743643 Version: 1 Related Project(s) Timing and Spatial Distribution of Antarctic Ice Sheet Growth and Sea-ice Formation across the Eocene-Oligocene Transition References Hojnacki, V., Lepp, A., Horowitz Castaldo, J., States, A., Li, X. and Passchier, S. 2022 submitted. Impact of Eocene-Oligocene Antarctic glaciation on the paleoceanography of the Weddell Sea Horowitz, Josie, "Identification of Ice-rafted Debris in the Weddell Sea to Characterize Glaciation at the Eocene-Oligocene Transition" (2021). Theses, Dissertations and Culminating Projects. 675. https://digitalcommons.montclair.edu/etd/675 Lepp, Allison Paige, "Geochemical and Sedimentological Analysis of Marine Sediments from ODP Site 696 and Implications for the Onset of Antarctic Glaciation" (2018). Theses, Dissertations and Culminating Projects. 140. https://digitalcommons.montclair.edu/etd/140 Light, Jennifer Joanne, "Geochemical and Particle Size Analysis of East Antarctic Shelf Sediments Through the Eocene Oligocene Transition" (2017). Theses, Dissertations and Culminating Projects. 15. https://digitalcommons.montclair.edu/etd/15 Keywords Antarctica Glaciation IODP 696 Marine Geoscience Marine Sediments Paleoceanography Sediment Core Data Weddell Sea