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Turnau, R., & Ledbetter, M. T. (1989). Deep circulation changes in the south Atlantic Ocean: response to initiation of northern hemisphere glaciation. Paleoceanography, 4(5), 565-583.
TitleDeep circulation changes in the south Atlantic Ocean
AuthorsR. Turnau, T. Ledbetter
AbstractParticle size statistics (coarsest 1 percentile and mean) of the nonbiogenic silt fraction of samples from Deep Sea Drilling Project sites 514, 516A, 517, 518, and 548 were used to infer relative changes in paleospeed of deep water masses in the Atlantic Ocean during the late Pliocene initiation of northern hemisphere glaciation. Grain size statistics were integrated with previous studies of geochemical and faunal assemblages to examine how climatic forcing regulates deepwater mass paleospeed and stratification. On the basis of between-site comparison of particle size, the late Pliocene was divided into four intervals of deepwater activity: 3.2 to 2.9 Ma, 2.9 to 2.6 Ma, 2.6 to 2.5 Ma, and 2.5 to 2.3 Ma, with pulses of increased paleospeed occurring at 3.15-3.10, 2.85, 2.7, 2.6 and 2.4 Ma.
Start page565
End page583
Subjectsdeep circulation change, deep water mass, glaciation, initiation response, palaeospeed, particle size, particle size statistics, statistics, Atlantic, (South)
NoteCited By (since 1996):8 Rocks and Cores