| Autor: |
H.W. Bentley, S. Cheng, Peter W Kubik, Harry E. Gove, P. Sharma, A.E. Norris |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 52:455-460 |
| ISSN: |
0168-583X |
| DOI: |
10.1016/0168-583x(90)90457-6 |
| Popis: |
Measurements of {sup 36}Cl in cuttings from a borehole that was drilled 387 m into unsaturated tuffs indicate the possible detection of significant radioactive decay of cosmogenic {sup 36}Cl in two of the samples. However, the {sup 36}Cl/Cl ratio was found to vary with the amount of pulverization of the cuttings. Work is in progress to separate the {sup 36}Cl/Cl data into cosmogenic and in situ components. The cosmogenic component will be used to trace very slow water movements through the unsaturated zone. Bomb pulse {sup 36}Cl was observed as deep as 153 m, and this identification is not constrained by the problem with pulverization. This work shows the efficacy of {sup 36}Cl measurements for detecting modern water movements deep in the unsaturated zone. 9 refs., 3 tabs. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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