Chemical composition of phosphorites and host sediments, supplement to: Baturin, Gleb N (1974): New data on the Upper Quaternary phosphorite nodules on the Southwest African shelf. Oceanology, 14, 856-860

Gleb N Baturin
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...
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