Weight percentages and mass accumulation rates of biogenic components in sediment core RC11-210 (Table 1) ...

• Main Authors: Rea, David K, Pisias, Nicklas G, Newberry, T
• Format: Dataset
• Language: English
• Published: PANGAEA 1991
• Subjects: DEPTH, sediment/rock; AGE; Sedimentation rate; Density, dry bulk; Calcium carbonate; Opal, biogenic silica; Carbon, organic, total; Accumulation rate, calcium carbonate; Accumulation rate, opal; Accumulation rate, total organic carbon; Piston corer; Calculated; Opal, extraktion DeMaster & Cochran, 1982; RC11; Robert Conrad; Lamont-Doherty Earth Observatory, Columbia University LDEO; Pacific; ice core
• Online Access: https://dx.doi.org/10.1594/pangaea.55394; https://doi.pangaea.de/10.1594/PANGAEA.55394

High-resolution records of the concentration and mass accumulation rate (MAR, or flux) of biogenic sediments from core RC11-210 in the central equatorial Pacific are compared for the entire late Pleistocene. The fluxes of calcium carbonate and organic carbon correlate well. The opal flux pattern shows no direct correlation with the other two; rather, opal flux maxima correlate with slopes of (i.e. both precede and follow) the organic carbon and carbonate MAR peaks. Organic carbon and calcite therefore may both be better indicators of past productivity than opal, which is an indicator of transition at this location. We interpret the sequence low biogenic fluxes, high opal fluxes, high carbonate, carbon, and opal fluxes as representing the transition from low to high sea surface biological productivity. The phase relationships for eccentricity of the biogenic sedimentation records were compared to those of other climatic indications including the oxygen isotope record of ice volume, the ice core CO2 record, ... : Supplement to: Rea, David K; Pisias, Nicklas G; Newberry, T (1991): Late Pleistocene paleoclimatology of the central equatorial Pacific: flux patterns of biogenic sediments. Paleoceanography, 6(2), 227-244 ...