Radiocarbon Dating of Biogenetic Opal
- 7 April 1967
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 156 (3771) , 66-67
- https://doi.org/10.1126/science.156.3771.66
Abstract
Approximately 75 grams of biogenetic opal were isolated from 45 kilograms of soil by employing gross particle-size and sink-float specific gravity fractionation procedures. After pretreatment of the sample to remove extraneous organic and inorganic carbon contaminants, the carbon occluded within opal phytoliths was dated at 13,300 ± 450 years before the present. Therefore, biogenetic opal is stable for relatively long periods.Keywords
This publication has 3 references indexed in Scilit:
- ACCESSIBILITY AND PROPERTIES OF OCCLUDED CARBON IN BIOGENETIC OPALSoil Science, 1967
- Aspects of Catenary and Depth Distribution of Opal Phytoliths in Illinois SoilsSoil Science Society of America Journal, 1964
- SOME MINERALOGICAL AND CHEMICAL PROPERTIES OF PLANT OPALSoil Science, 1963