Man-Made Carbon-14 in Deep Pacific Waters: Transport by Biological Skeletal Material
- 12 December 1969
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 166 (3911) , 1397-1399
- https://doi.org/10.1126/science.166.3911.1397
Abstract
Calcareous particles present in Pacific waters at depths of 50 to 3500 meters were collected by filtering seawater through spongin matrix. The specific activity of carbon-14 could be measured in two of these collections from depths of 2300 and 3500 meters. The ratios of carbon-14 to carbon-12 correspond to values observed in surface waters in recent years as a result of the addition of manmade carbon-14, thus indicating that the calcareous particles resulted from recent biological productivity. The results are related to the mean settling rates and the sizes and dissolution rates of biogenic calcareous particles in transit through a seawater column.Keywords
This publication has 5 references indexed in Scilit:
- Further investigation on the transfer of radiocarbon in natureJournal of Geophysical Research, 1968
- Foraminiferal Ooze: Solution at DepthsScience, 1967
- Calcite: Rates of Dissolution in a Vertical Profile in the Central PacificScience, 1966
- Thorium and uranium isotopes in seawater and sedimentsEarth and Planetary Science Letters, 1966
- A method for the extraction of trace elements from sea waterGeochimica et Cosmochimica Acta, 1964