(Tables 1-3, pages 14-15) Radionuclide determinations on cores from the DOMES Site B and MANOP Site S in the Pacific Ocean, supplement to: Kadko, David (1983): A multitracer approach to the study of erosion in the northeast equatorial Pacific. Earth and Planetary Science Letters, 63(1), 13-33


Erosion of sediment at two sites within the siliceous-clay province of the northeast equatorial Pacific is investigated by examining radionuclide, radiolarian and percent smectite profiles of three cores. A numerical model of the sediment is presented that examines the effect of various particle rain rates, erosion rates and biological mixing parameters on these profiles. 230Th, because of its longer half-life, is a more sensitive tracer of erosion than231Pa. Because the input of these radionuclides into the sediment is not well defined however, conservative tracers, such as the percent smectite of the clay fraction and fossil radiolarians are used to constrain the rate of sediment recycling. Dissolution of radiolarians though can greatly affect the interpretation of the observed biostratigraphy.

The dried, powdered samples (approximately 0.5 g) were dissolved in a mixture of nitric, perchloric and hydrofluoric acids to which 233Pa, 232U, and 238Th spikes were added. The nuclides were precipitated with iron hydroxide, taken up in 8N HCl and further separated.

DOI https://doi.org/10.1594/PANGAEA.881163
Related Identifier https://doi.org/10.1016/0012-821X(83)90018-3
Related Identifier https://doi.org/10.7289/V52Z13FT
Related Identifier https://doi.org/10.7289/V53X84KN
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.881163
Creator Kadko, David
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 1983
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Size 371 data points
Discipline Earth System Research
Spatial Coverage (-140.107W, 11.023S, -137.405E, 11.810N); MANOP Site S, Pacific Ocean; DOMES Site B, Pacific Ocean
Temporal Coverage Begin 1975-11-09T00:00:00Z
Temporal Coverage End 1979-05-26T00:00:00Z