(Table 1) Radiocarbon ages of ODP Hole 146-893A ...

• Main Authors: Hendy, Ingrid L, Kennett, James P
• Format: Dataset
• Language: English
• Published: PANGAEA 2000
• Subjects: Sample code/label; DEPTH, sediment/rock; Age, dated; Drilling/drill rig; DSDP/ODP/IODP sample designation; Age, 14C AMS; Age, reservoir corrected Stuiver & Braziunas, 1993; Age, reservoir corrected Bard, 1988; Leg146; Joides Resolution; Ocean Drilling Program ODP; Neogloboquadrina pachyderma
• Online Access: https://dx.doi.org/10.1594/pangaea.855397; https://doi.pangaea.de/10.1594/PANGAEA.855397

High-resolution planktonic foraminiferal census data from Santa Barbara Basin (Ocean Drilling Program hole 893A) demonstrate major assemblage switches between 25 and 60 ka that were associated with Dansgaard-Oeschger cycles. Stadials dominated by Neogloboquadrina pachyderma (sinistral), and Globigerinoides glutinata suggest a strong subpolar California Current influence, while interstadials marked by abundant N. pachyderma (dextral) and G. bulloides indicate a relative increase in subtropical countercurrent influence. Modern analog technique and transfer function (F-20RSC) temperature reconstructions support d18O evidence of large rapid (70 years or less) sea surface temperature shifts (3° to 5°C) between stadials and interstadials. Changes in the vertical temperature gradient and water column structure (thermocline depth) are recorded by planktonic faunal oscillations suggest bimodal stability in the organization of North Pacific surface ocean circulation. Santa Barbara Basin surface water demonstrates the ... : Sample data were taken from Ingram and Kennet (1995). ...