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Restoration of the Original Form of Distorted Specimens

Published online by Cambridge University Press:  01 May 2009

Philip Lake
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Extract

Many fossils in the older rocks have been distorted by pressure, and if only one specimen is available it is often difficult to be sure of its original proportions. Sometimes, however, there is a specimen which not only furnishes sufficient data for the determination of its original form, but can be made to yield a photograph in which the distortion is corrected. In his paper on “Slaty Cleavage” Harker1 showed how, in such cases, the distortion can be determined, and he referred to an earlier paper by Dufet2 in which the same principle is used, though in a different way. So far as I know the method of correcting the distortion photographically has not previously been employed.

Type
Articles
Information
Geological Magazine , Volume 80 , Issue 4 , August 1943 , pp. 139 - 147
Copyright
Copyright © Cambridge University Press 1943

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References

1 Rep. Brit. Assoc. for 1885, p. 827.Google Scholar

2 Ann. de l'Ecole Norm. Sup., sér. 2, t. iv, 183 (1875). Owing to the circumstances of the present time I have been unable to see this paper myself.Google Scholar