Manganese Nodules: Thorium-230: Protactinium-231 Ratios
- 4 November 1966
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 154 (3749) , 646-647
- https://doi.org/10.1126/science.154.3749.646
Abstract
The Th 230 : Pa 231 activity ratio in 7 of 11 manganese nodules is less than 10.8, the theoretical production ratio of activities in the ocean. This finding indicates differential accumulation of these nuclides in authigenic deposits of manganese-iron oxide.Keywords
This publication has 7 references indexed in Scilit:
- Manganese Nodules: Their EvolutionScience, 1966
- An evaluation of the U234/U238method as a tool for dating pelagic sedimentsJournal of Geophysical Research, 1965
- Uranium and thorium series inequilibrium in sea waterJournal of Geophysical Research, 1964
- MEASURED DEPOSITION RATES OF MARINE SEDIMENTS AND IMPLICATIONS FOR ACCUMULATION RATES OF EXTRATERRESTRIAL DUSTAnnals of the New York Academy of Sciences, 1964
- Absolute Dating of Deep-Sea Cores by the Pa231/Th230MethodThe Journal of Geology, 1961
- Protactinium-231 Content of Ocean Water and SedimentsScience, 1960
- Ionium-Thorium Chronology in Deep-Sea Sediments of the PacificScience, 1958