(Table T2) Biogenic opal in Palmer Deep sediments at ODP Site 178-1098 ...

• Main Authors: Anderson, Linda Davis, Ravelo, Ana Christina
• Format: Dataset
• Language: English
• Published: PANGAEA 2001
• Subjects: DEPTH, sediment/rock; Depth, composite; Sample code/label; Opal, biogenic silica; Opal, biogenic silica, standard deviation; Composite Core; Intercore correlation; DSDP/ODP/IODP sample designation; Opal, extraction; Mortlock & Froelich, 1989; Leg178; Joides Resolution; Ocean Drilling Program ODP; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.127863; https://doi.pangaea.de/10.1594/PANGAEA.127863

High-resolution records of sedimentary proxies provide insights into fine-scale geochemical responses to climatic forcing. Gamma-ray attenuation (GRA) bulk-density data and magnetic stratigraphy records from Palmer Deep, Site 1098, show variability close to the same scale as ice cores, making this site ideal for high-resolution geochemical investigations. In conjunction with shipboard geophysical measurements, silica records allow high-resolution evaluation of the frequencies and amplitudes of biogenic variability. This provides investigators additional data sets to evaluate the global extent of climatic events that are presently defined by regional oceanic data sets (e.g., Younger Dryas in the North Atlantic) and to evaluate the potential mechanisms that link biological productivity and climate in the Southern Ocean.In addition, because of the observed links between diatom blooms and export productivity (Michaels and Silver, 1988, doi:10.1016/0198-0149(88)90126-4), biogenic silica may be an indicator of the ... : Supplement to: Anderson, Linda Davis; Ravelo, Ana Christina (2001): Data report: Biogenic opal in Palmer Deep sediments, Site 1098, Leg 178. In: Barker, PF; Camerlenghi, A; Acton, GD; Ramsay, ATS (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 178, 1-7 ...