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Tektites probably wholly terrestrial and related to continental movement

Published online by Cambridge University Press:  01 May 2009

A. R. Crawford
A. R. Crawford
Affiliation:
Department of Geology, University of CanterburyChristchurch 1, New Zealand
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Summary

The four groups of tektites are now widely regarded as the product of splash from a meteoritic or cometary impact melt of terrestrial rock. They include two groups (Moldavites and Ivory Coast tektites) attributed to the Nordlinger Ries and Bosumtwi craters. These craters seem unlikely to be of impact origin, though hyper-explosive. Tektites are, therefore, more probably all wholly terrestrial. For much the largest group, those of the combined Southeast Asian-Australian strewnfield, no satisfactory source is known. An origin in Southeast Asia, even by impact, is improbable. A possible source lies in Central Asia. The hyper-explosive activity is regarded as an extreme form of volcanism, a consequence locally and rarely of the continual combined vertical and ‘horizontal’ movements of continents, here termed tribulation.

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Geological Magazine , Volume 116 , Issue 4 , July 1979 , pp. 261 - 283
Copyright
Copyright © Cambridge University Press 1979

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