Age model and ostracod countings from IODP Site 306-U1314 ...

• Main Authors: Alvarez Zarikian, Carlos A, Stepanova, Anna Yu, Gruetzner, Jens
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2009
• Subjects: Composite Core; Exp306; Joides Resolution; Integrated Ocean Drilling Program / International Ocean Discovery Program IODP; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.763283; https://doi.pangaea.de/10.1594/PANGAEA.763283

We present a detailed study of glacial/interglacial deep sea benthic ostracod assemblage variability at IODP Site U1314 (subpolar North Atlantic) in relation to the history of ice-rafting events and changes in deep ocean circulation over the past 170 ky. Our records of ostracod diversity, abundance and dissolution and sediment properties (IRD and CaCO3) show an excellent correspondence to high amplitude orbital and millennial variability observed in the climate records (d13C and d18O) from neighboring deep water sites, suggesting that the benthic meiofauna fluctuates synchronously with the prevailing oceanographic conditions (surface ocean conditions, deep ocean circulation and water temperature and food flux). Krithe (dominant), Argilloecia and Cytheropteron are the most abundant and diverse genera in association with Rockallia enigmatica. Three ostracod assemblages are recognized. The genera Pennyella, Argilloecia, Pelecocythere, Ambocythere, Pseudobosquetina, Bradleya and Nannocythere are associated with ... : Supplement to: Alvarez Zarikian, Carlos A; Stepanova, Anna Yu; Gruetzner, Jens (2009): Glacial-interglacial variability in deep sea ostracod assemblage composition at IODP Site U1314 in the subpolar North Atlantic. Marine Geology, 258(1-4), 69-87 ...