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dc.contributor.advisor Adams, John A. S.
dc.creatorBalacek, Kenneth Joseph
dc.date.accessioned 2016-04-22T21:58:57Z
dc.date.available 2016-04-22T21:58:57Z
dc.date.issued 1966
dc.identifier.citation Balacek, Kenneth Joseph. "Radioactivity in tektites." (1966) Master’s Thesis, Rice University. https://hdl.handle.net/1911/89901.
dc.identifier.urihttps://hdl.handle.net/1911/89901
dc.description.abstract Thorium, uranium, and potassium contents of 10 bediasites, 12 philippinites, 8 australltes, and 5 indochinttes were determined using a non-destructive gamma-spectrometric technique. The average thorium, uranium, and potassium values of the 35 tektites counted were 11.8 ppm, 2.1 ppm, and 1.9% respectively. The bediasites show lower than average values (7.3 ppm Th, 1.8 ppm U, and 1. 8% K) while the philippinites are noticeably higher (14.6 ppm Th, 2.6 ppm U, and 2.0% K). The australites and indochinites show similar values (12.7 ppm Th, 2.1 ppm U, and 1.9% close to the total average. The bediasites seem to be definitely deficient in thorium content. An average Th/U ratio of 5. 4 was obtained. Although valid regional differences could not be determined, a definite hierarchy of decreasing thorium and uranium values from australttes and indochinites, to bedtasttes was clearly established and confirmed by total alpha-counting methods. Both the individual Th/U ratios and the total alpha-determinations indicate a single related occurrence for the Pacific Ocean or Far Eastern tektites consisting of the australites, indochinites, javanites, and philippinites. The microsites of the alpha-emitters were investigated by autoradiography and it was determined that the radioactivity in tektites is homogeneously distributed and of a low flux.
dc.format.extent 60 pp
dc.language.iso eng
dc.title Radioactivity in tektites
dc.identifier.digital RICE0935
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Earth Science
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Arts
dc.format.digitalOrigin reformatted digital
dc.identifier.callno Thesis Geol. 1966 Balacek


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