Chemical composition of phosphorites and host sediments

Paleotemperature curves were drawn from oxygen-isotope ratios in CaCO3 of planktonic foraminiferal tests and by the micropaleontological method using quantitative relationships of their species. Two series of curves yield similar results. These data confirm that isotope composition of oxygen reflect...

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Bibliographic Details
Main Author: Baturin, Gleb N
Format: Dataset
Language:English
Published: PANGAEA 1974
Subjects:
Archive of Ocean Data
ARCOD
Atlantic Ocean
Dredge
DRG
Mikhail Lomonosov
ML26
ML26_2046
ML26_2047
ML26_2048
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.753865
https://doi.org/10.1594/PANGAEA.753865
Description
Summary:Paleotemperature curves were drawn from oxygen-isotope ratios in CaCO3 of planktonic foraminiferal tests and by the micropaleontological method using quantitative relationships of their species. Two series of curves yield similar results. These data confirm that isotope composition of oxygen reflects primarily temperature, and not isotope composition in ocean water. Temperature of the upper layer of ocean water increased from north to south both during the last two glaciations and in the interglacials. All three sediment cores collected from different latitudes show approximately the same amplitudes of fluctuation of mean annual temperature during times of their accumulation, as determined independently by different methods; these amplitudes are estimated as 5-7°C.

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