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| Main Authors: | , |
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| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
1980
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.770353 |
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| _version_ | 1867170916212932608 |
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| author | Lalou, Claude Brichet, Evelyne |
| author_facet | Lalou, Claude Brichet, Evelyne |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The geochemical behaviour of uranium and thorium in metalliferous sediments and hydrothermal deposits has been widely studied and the main results have been summarised by Boström and Rydell. These isotopes may be used to clarify how the metal-rich solutions are introduced into sediment cover and seawater. Using radiochemistry followed by alpha spectrometry, we have measured uranium concentrations as high as several hundred p.p.m., which must clearly be associated with ocean ridge thermal activity, in sediments interbedded between the basaltic basement and the green hydrothermal mud at DSDP Site 424. These high uranium concentrations indicate the path followed by the hydrothermal fluid which, debouching at the sediment–water interface, formed the green mud. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_770353 |
| institution | PANGAEA |
| language | en |
| publishDate | 1980 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Uranium and Thorium concentrations, activity ratios and calcium carbonate content of DSDP Site 54-424 Lalou, Claude Brichet, Evelyne 54-424; 54-424A; 54-424B; Calcium carbonate; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Event label; Glomar Challenger; Leg54; North Pacific/MOUND; Sample code/label; Sample code/label 2; Thorium-232; Thorium-232, standard deviation; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation; Uranium-238; Uranium-238, standard deviation The geochemical behaviour of uranium and thorium in metalliferous sediments and hydrothermal deposits has been widely studied and the main results have been summarised by Boström and Rydell. These isotopes may be used to clarify how the metal-rich solutions are introduced into sediment cover and seawater. Using radiochemistry followed by alpha spectrometry, we have measured uranium concentrations as high as several hundred p.p.m., which must clearly be associated with ocean ridge thermal activity, in sediments interbedded between the basaltic basement and the green hydrothermal mud at DSDP Site 424. These high uranium concentrations indicate the path followed by the hydrothermal fluid which, debouching at the sediment–water interface, formed the green mud. |
| title | (Table 1) Uranium and Thorium concentrations, activity ratios and calcium carbonate content of DSDP Site 54-424 |
| topic | 54-424; 54-424A; 54-424B; Calcium carbonate; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Event label; Glomar Challenger; Leg54; North Pacific/MOUND; Sample code/label; Sample code/label 2; Thorium-232; Thorium-232, standard deviation; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation; Uranium-238; Uranium-238, standard deviation |
| url | https://doi.org/10.1594/PANGAEA.770353 |