Australites, Henbury impact glass and subgreywacke: a comparison of the abundances of 51 elements
1966; Elsevier BV; Volume: 30; Issue: 11 Linguagem: Inglês
10.1016/0016-7037(66)90033-0
ISSN1872-9533
Autores Tópico(s)Planetary Science and Exploration
ResumoData are presented for 51 elements in two subgreywackes and a meteorite impact glass from Henbury, Australia, and for five australites covering the range in composition for this group of tektites. There are no significant differences in composition between the impact glass and the parental subgreywackes, and no effective alteration in concentration has taken place during melting for the elements studied. The australites are closely similar in composition to the Henbury glass and sedimentary rocks, except that Ca and Sr are enriched, and the chalcophile elements Cu, Pb, Sn, Tl, In and Bi are depleted in the tektites. From analogy with the impact glass-sediment relations, these variations are considered to be present in the tektite parent material, which otherwise is equivalent in composition to terrestrial subgreywacke.
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