Document Detail


The source of anomalous radioactivity in the springs bordering the Sea of Galilee, Israel.
MedLine Citation:
PMID:  16118029     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Situated within the Jordan Rift Valley, along the shores of Lake Kinneret (Sea of Galilee) which serves as the national water reservoir of Israel, are saline hot springs that are notable for their enrichment in radon and radium. Though the anomalous radioactivity has been known for almost half a century, the source of the radioactive anomalies has been a subject of conjecture. Radiometric analysis of a rock core drilled through Mt. Arbel, situated to the west of the lake, reveals that the oil shale sequence of the Senonian En Zetim and Ghareb formations is strikingly deficient in radium. Mt. Arbel has been cut by Rift Valley related faults that serve as conduits for ascending brines. The organic matter enriched sequence is encountered in the subsurface at elevations lower than the water level of the nearby radioactive enriched hot springs. It is thus concluded that hot ascending brines underlying the lake flush through the organic matter enriched sequence and remove a substantial percentage of 226Ra from the uranium enriched organic material, before draining to the outlets of the springs. Saline springs that are in contact with organic matter enriched sequence show excess of radium and radon, while fresh water springs in the same stratigraphic position show only excess of radon.
Authors:
S Ilani; T Minster; J Kronfeld; O Even
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Publication Detail:
Type:  Journal Article     Date:  2005-08-22
Journal Detail:
Title:  Journal of environmental radioactivity     Volume:  85     ISSN:  0265-931X     ISO Abbreviation:  J Environ Radioact     Publication Date:  2006  
Date Detail:
Created Date:  2005-11-01     Completed Date:  2006-03-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8508119     Medline TA:  J Environ Radioact     Country:  England    
Other Details:
Languages:  eng     Pagination:  137-46     Citation Subset:  IM    
Affiliation:
Geological Survey of Israel, 30 Malkhe Yisrael Street, 95501 Jerusalem, Israel. ilani@mail.gsi.gov.il
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MeSH Terms
Descriptor/Qualifier:
Israel
Radiometry
Water Pollutants, Radioactive / analysis*
Chemical
Reg. No./Substance:
0/Water Pollutants, Radioactive

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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