Tropical Atlantic sediment U-series of James Cook cruise JC094

DOI

The radiogenic isotope ratio 231Pa/230Th of seawater and ocean sediments is a potentially powerful tool for tracing oceanic processes such as the ocean circulation and marine primary productivity. However, 231Pa/230Th reflects the combined signal of multiple controls associated with scavenging and oceanic transport, limiting its use as a paleo-proxy. Given that links between seawater and sedimentary 231Pa and 230Th distributions are crucial for understanding the cycling and removal fluxes of these nuclides, we carry out analysis of 231Pa and 230Th in both seawater (dissolved phase) and modern sediment samples acquired from five depth transects across the northern tropical Atlantic open ocean during the JC094 research expedition which took place in October-November 2013. Measurements of the radiogenic isotopes were performed using a MultiCollector-Inductively Coupled Plasma-Mass Spectrometer (MC-ICP-MS). In addition, CTD beam attenuation coefficient measurements and XRF scan Fe and Ti measurements of two sediment cores collected from the region during the same research expedition are presented to aid interpretation of 231Pa and 230Th data. Here we show the U-series dataset for the sediment samples.

Identifier
DOI https://doi.org/10.1594/PANGAEA.926847
Related Identifier https://doi.org/10.1016/j.marchem.2020.103894
Related Identifier https://doi.org/10.1594/PANGAEA.926856
Related Identifier https://doi.org/10.1594/PANGAEA.926857
Related Identifier https://doi.org/10.1594/PANGAEA.926859
Related Identifier https://doi.org/10.1594/PANGAEA.926858
Related Identifier https://doi.org/10.1594/PANGAEA.926860
Related Identifier https://doi.org/10.1594/PANGAEA.926862
Related Identifier https://doi.org/10.1594/PANGAEA.926855
Related Identifier https://doi.org/10.1016/j.gca.2017.07.033
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.926847
Provenance
Creator Ng, Hong Chin; Robinson, Laura F; Rowland, George Henry; Chen, Siyuan Sean; McManus, Jerry F
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2021
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 240 data points
Discipline Earth System Research
Spatial Coverage (-51.100W, 5.590S, -21.272E, 15.464N)
Temporal Coverage Begin 2013-10-22T21:18:00Z
Temporal Coverage End 2013-11-27T01:48:00Z