(Table 1) Age and sedimentation rates of Pleistocene/Holocene sequences at DSDP Sites 86-580 and 94-611 ...

• Main Author: Morley, Joseph J
• Format: Dataset
• Language: English
• Published: PANGAEA 1987
• Subjects: Event label; DEPTH, sediment/rock; Boundary description; Age model; Sedimentation rate; Composite Core; Leg86; Leg94; Glomar Challenger; Deep Sea Drilling Project DSDP; Kidd; Morley; Pacific; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.788586; https://doi.pangaea.de/10.1594/PANGAEA.788586

The recovery from the North Atlantic (Site 611) of a continuous Pleistocene sedimentary record with a siliceous microfaunal component made it possible to compare the high-latitude abundance pattern of the radiolarian species Cycladophora davisiana in the Atlantic with that produced from analyses of a high-latitude record (Site 580) from the northwest Pacific. Previous studies had shown that the late Pleistocene (0-0.45 Ma) abundance variations of this species in these high-latitude regions were similar.Cycladophora davisiana maxima in the North Atlantic record reach abundance levels three to four times higher than C. davisiana maxima registered in sediments from the northwest Pacific site. This difference in magnitude of abundance peaks is most likely an effect of the more northerly location of Site 611 (53°N) compared with that of Site 580 (42°N), since high-latitude time-slice studies have shown a direct relationship between increasing latitude and C. davisiana abundance. Discontinuous preservation of ... : Supplement to: Morley, Joseph J (1987): Comparison of the Pleistocene records of the radiolarian Cycladophora davisiana at high-latitude sites of the Deep Sea Drilling Project. In: Ruddiman, WF; Kidd, RB; Thomas, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 94, 889-894 ...