Stable carbon and oxygen isotope record of planktonic foraminifera of ODP Hole 115-709C, supplement to: Shackleton, Nicholas J; Hall, Michael A (1990): Pliocene oxygen isotope stratigraphy of Hole 709C. In: Duncan, RA; Backmann, J; Peterson, LC; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 115, 529-538

• Main Authors: Shackleton, Nicholas J, Hall, Michael A
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 1990
• Subjects: Drilling/drill rig; Leg115; Joides Resolution; Ocean Drilling Program ODP; Shackleton; Planktonic foraminifera
• Online Access: https://dx.doi.org/10.1594/pangaea.755884; https://doi.pangaea.de/10.1594/PANGAEA.755884

A closely spaced (5-cm interval) oxygen isotope stratigraphy of planktonic foraminifers from Hole 709C was completed for most of the Pliocene and lowermost Pleistocene (around 4.6-1.4 Ma). This will contribute data to the future testing of the Matthews and Poore model of 1980, in which it was assumed that low-latitude sea-surface temperature has remained virtually constant as global climate evolved.Spectral analyses of the record by means of biostratigraphic time controls show a distinct peak at a period near 40 ka that is probably associated with the orbital obliquity cycle. Visual inspection of the record shows that intervals containing distinct 40-ka cycles are present in both lower and upper parts of the Pliocene even though a regular cycle cannot be followed throughout the entire 4-m.y. investigated.