TECHNO encrustation description and analysis
| Cobertura |
LATITUDE: -13.090000 * LONGITUDE: -148.620000 * DATE/TIME START: 1973-11-03T00:00:00 * DATE/TIME END: 1973-11-03T00:00:00 |
|---|---|
| Data(s) |
18/11/1979
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| Resumo |
The distribution of radioactivities in a large polymetallic encrustation (TECHNO) sampled from the Pacific sea floor has been studied in great detail. The study includes measurements of the long-lived U and Th decay series isotopes, alpha-particle tracks and SUP-10 Be and SUP-26 Al (Results on the latter two cosmonuclides have been reported by Guichard, Reyss and Yokoyama, 1978). The data are discussed in terms of their implication on age dating of the sample. Two interpretations of the data are presented leading to vastly different time scales for the formation of the sample. Here the opinion is divided among the authorship. One group, as well as Guichard et al (1978), favours the million-years scale and the other favors scale measured in thousands of years. The principal pros-and-cons aspects of the two views are mentioned. |
| Formato |
application/zip, 4 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.855055 doi:10.1594/PANGAEA.855055 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Relação |
Grant, J Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, doi:10.7289/V52Z13FT Microphotography of a polished section of the TECHNO crust. Letters A through E denote the zonations analysed in the text. (Fig2 - Page 262) (URI: hdl:10013/epic.46220.d033) Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, doi:10.7289/V53X84KN |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Lalou, Claude; Ku, Teh-Lung; Brichet, Evelyne; Poupeau, G; Romary, P (1979): TECHNO encrustation, Part I: Radiometric studies. In: Lalou C. & Sorensen, B.M. (Eds), La Genèse Des Nodules de Manganèse. Centre Océanologique de Bretagne, Gif-sur-Yvette, France, 261-269, hdl:10013/epic.46220.d031 |
| Palavras-Chave | #230Th xs; 230Th xs a; 230Th xs std dev; 231Pa xs; 231Pa xs a; 231Pa xs std dev; 232Th; 232Th std dev; 234U; 234U/238U; 234U/238U std dev; 234U std dev; 238U; 238U std dev; Age, comment; Alpha-spectrometry; Calculated; Comm; Depth; DEPTH, sediment/rock; Description; Distance; DISTANCE; Distance, maximum; Distance, minimum; Dist max; Dist min; Dredge; DRG; ID; Identification; Marara; NIXO_10; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; NX10-CL; Pacific Ocean; Position; Protactinium 231 excess; Protactinium 231 excess, per area; Protactinium 231 excess, standard deviation; Quantity; Quantity of deposit; Sediment; Sediment type; Size; Substrate; Substrate type; TECHNO 07; Thorium 230 excess; Thorium 230 excess, per area; Thorium 230 excess, standard deviation; Thorium 232; Thorium 232, standard deviation; Type; Uranium 234; Uranium 234, standard deviation; Uranium 234/Uranium 238 activity ratio; Uranium 234/Uranium 238 activity ratio, standard deviation; Uranium 238; Uranium 238, standard deviation; Visual description |
| Tipo |
Dataset |
