Quaternary radiolarian biostratigraphy of IODP Site 341-U1417A ...

• Main Authors: Matsuzaki, Kenji M, Suzuki, Noritoshi
• Format: Dataset
• Language: English
• Published: PANGAEA 2017
• Subjects: Sample code/label; Actinomma robustum; Amphimelissa setosa; Axoprunum acquilonium; Eucyrtidium matuyamai; Lychnocanoma sakaii; Schizodiscus japonicus; Stylatractus universus; Counts; Comment; Drilling/drill rig; Exp341; Joides Resolution; Integrated Ocean Drilling Program / International Ocean Discovery Program IODP; Gulf of Alaska; Pacific; Subarctic; Alaska
• Online Access: https://dx.doi.org/10.1594/pangaea.877703; https://doi.pangaea.de/10.1594/PANGAEA.877703

Expedition 341 of the Integrated Ocean Drilling Program (IODP) retrieved sediment cores spanning the time interval between the Pleistocene and Miocene from the southern Gulf of Alaska. Onboard Pleistocene radiolarian biostratigraphy is hereby refined by increasing the sampling resolution. The 178 core samples from the upper 190 m CCSF-B of Site U1417 contained faunal elements similar to the Northwest Pacific; for example, the three biozones in the Northwest Pacific (i.e., Eucyrtidium matuyamai, Stylatractus universus and Botryostrobus aquilonaris) were also recognized in the Gulf of Alaska, spanning 1.80-1.13 Ma, 1.13-0.45 Ma, and the last 0.45 Myr, respectively. Based on the age model that we used in this study and the shipboard paleomagnetic reversal events, the first occurrences (FOs) of Amphimelissa setosa and Schizodiscus japonicus in the Northeast Pacific were preliminarily determined to be 1.48 and 1.30 Ma, respectively. The last occurrence (LO) of Eucyrtidium matuyamai and the FO of Lychnocanoma ... : Supplement to: Matsuzaki, Kenji M; Suzuki, Noritoshi (2018): Quaternary radiolarian biostratigraphy in the subarctic northeastern Pacific (IODP Expedition 341 Site U1417) and synchroneity of bioevents across the North Pacific. Journal of Micropalaeontology, 37(1), 1-10 ...