Journal article
Quantifying K, U, and Th contents of marine sediments using shipboard natural gamma radiation spectra measured on DV JOIDES Resolution
D De Vleeschouwer, AG Dunlea, G Auer, CH Anderson, H Brumsack, A de Loach, M Gurnis, Y Huh, T Ishiwa, K Jang, MA Kominz, C März, B Schnetger, RW Murray, H Pälike, SJ Gallagher, CS Fulthorpe, K Bogus, S Baranwal, IS Castaneda Show all
Geochemistry Geophysics Geosystems | AMER GEOPHYSICAL UNION | Published : 2017
DOI: 10.1002/2016GC006715
Abstract
During International Ocean Discovery Program (IODP) expeditions, shipboard-generated data provide the first insights into the cored sequences. The natural gamma radiation (NGR) of the recovered material, for example, is routinely measured on the ocean drilling research vessel DV JOIDES Resolution. At present, only total NGR counts are readily available as shipboard data, although full NGR spectra (counts as a function of gamma-ray energy level) are produced and archived. These spectra contain unexploited information, as one can estimate the sedimentary contents of potassium (K), thorium (Th), and uranium (U) from the characteristic gamma-ray energies of isotopes in the 40K, 232Th, and 238U r..
View full abstractGrants
Awarded by European Commission
Funding Acknowledgements
We thank the IODP Expedition 323, 346, and 356 Shipboard science parties, the crew, and technical staff of DV JOIDES Resolution for help. We also thank C. Hauzenberger and W. Gossler for help with ICP-MS measurements. This project used samples and data provided by the International Ocean Discovery Program (IODP) and its predecessors. DDV is a postdoctoral researcher and HP is the principal investigator in ERC Consolidator grant "EarthSequencing'' (grant agreement 617462). Portions of this material are based on work supported while RWM was serving at the National Science Foundation. All new data reported in this study can be obtained from PANGAEA (https://doi.pangaea.de/10.1594/PANGAEA.872654). We ran the algorithm for all holes cored JOIDES Resolution since Expedition 317: These datasets can be downloaded from http://daviddevleeschouwer.webs.com/ngr.htm.