Radiochemical analyses and contents of organic carbon and CaCO3 in equatorial Pacific Ocean sediments, supplement to: Yang, Yong-Liang; Elderfield, Henry; Ivanovich, Miro (1990): Glacial to Holocene changes in carbonate and clay sedimentation in the equatorial Pacific Ocean estimated from thorium 230 profiles. Paleoceanography, 5(5), 789-809

Yong-Liang Yang, Henry Elderfield & Miro Ivanovich
Uranium series nuclide concentrations have been measured on sediments from five box cores from an equatorial Pacific transect. 230Thexcess activities show discontinuities at the Holocene-glacial boundary as dated by 14C. The glacial sedimentation rates determined by 230Th and 14C are 2.5-3.0 cm/kyr. The Holocene rates from 230Th are much lower than those dated by 14C (1.9-2.3 cm/kyr) because of carbonate dissolution. 230Th sedimentation fluxes exceed water column supply by factors of 1.2-1.8 in the Holocene...
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