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Non-random distribution of many terrestrial so-called impact structures and its implication

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Abstract

Criteria used to identify crypto-explosive structures as of impact origin imply only shock. Geographical distribution of many localities is non-random and relates to distribution of carbonatites and other igneous rocks. The implications are important and numerous. One is that some “meteorites” are almost certainly Earth material, another that tektites are entirely terrestrial.

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I thank Mr. Guyon Warren for statistical help, and Drs. J.D. Bradshaw, W. Compston, M. Gage, J. Gilluly, H.C. Urey, G.E. Williams and B.G. Woodland for written and oral discussion.

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Crawford, A.R. Non-random distribution of many terrestrial so-called impact structures and its implication. Naturwissenschaften 65, 520–526 (1978). https://doi.org/10.1007/BF00439792

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