Other
Scientific paper
Oct 1958
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1958gecoa..14..331p&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 14, Issue 4, pp.331-339
Other
3
Scientific paper
Eight tektite samples from four localities, Australia, Indo-China, the Philippines, and the Moldau Valley were analysed for Rb and Sr, and Sr isotopic composition analyses were made on seven of the samples. Seven of the eight samples are so similar in Rb / Sr ratios that a common source origin is postulated for the tektites. No radiogenic Sr 87 was found in the tektites. All have normal 84/88, 86/88 and 87/86 ratios, namely, 0.0068, 0.1193, and 0.712. It is shown that the present Rb/Sr and Sr isotopic composition data is compatible (but unlikely) with an origin of tektites as differentiated from either proto-basaltic or achondritic material. The tektites could not have differentiated from chondritic material. Other than indicating a common and homogeneous source origin for the tektites, the present data are not evidence for or against an extra-terrestrial origin. However, the homogeneity in Rb / Sr contents and the constancy of the Sr 87 contents make a terrestrial origin difficult to accept because of the wide geographical distributions of tektites.
Cormier R. F.
Faierairn H. W.
Herzog L. F.
Pinson H. Jr. W.
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