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Biogenic Silica and Diatom Silicon Isotopes from IODP Site U1521 Data DOI: https://doi.org/10.15784/601976 Cite as Dodd, J. (2026) "Biogenic Silica and Diatom Silicon Isotopes from IODP Site U1521" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601976. Abstract The dataset includes biogenic silica content (wt %) and diatom silicon isotope values (d29Si and d30Si) for marine sediments from the International Ocean Discovery Program (IODP) Expedition 374, Site U1521. These data are from depths of 3 to 608 mbsf. Creator(s): Dodd, Justin Date Created: 2025-08-28 Repository: USAP-DC (current) License: Creative Commons Zero v1.0 Universal [CC0 1.0] Spatial Extent(s) West: -179.67184667, East: -179.67184667, South: -75.68392, North: -75.68392 Award(s) NSF 1947657 Version: 1 Related Project(s) Collaborative Proposal: Miocene Climate Extremes: A Ross Sea Perspective from IODP Expedition 374 and DSDP Leg 28 Marine Sediments Keywords Antarctica Cryosphere Diatom IODP IODP 374 IODP U1521 Marine Sediments Ross Sea Silicon Stable Isotope