| Abstract: | A Czechoslovakian tektite or moldavite shows clear, indirect evidence of aerodynamic ablation. This large tektite has the shape of a teardrop, with a strongly convex, deeply corroded, but clearly identifiable front and a planoconvex, relatively smooth, posterior surface. In spite of much erosion and corrosion, demarcation of the posterior and the anterior part of the specimen (the keel) is clearly preserved locally. This specimen provides the first tangible evidence that moldavites entered the atmosphere cold, probably at a velocity exceeding 5 kilometers per second; the result was selective heating of the anterior face and perhaps ablation during the second melting. This provides evidence of the extraterrestial origin of moldavites. |
| Genre: | Article |
| ProdID: | 70010470 |
| Citation Author: | Chao, E. C. T. |
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| Citation End Page: | 791 |
| Citation Issue: | 3645 |
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| Citation Language: | English |
| Citation Larger Work Title: | Science |
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| Citation Number Of Pages: | 2 |
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| Citation Search Results Text: | Spalled, aerodynamically modified moldavite from Slavice, Moravia, Czechoslovakia; 1964; Article; Journal; Science; Chao, E. C. T. |
| Citation Start Page: | 790 |
| Citation Volume: | 146 |
| Citation Year: | 1964 |
| Type: | citation/reference |
| Text: | Spalled, aerodynamically modified moldavite from Slavice, Moravia, Czechoslovakia; 1964; Article; Journal; Science; Chao, E. C. T. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 1 Jan 1964 00:00 -0600 |
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