On the origin of septarian structure
- 1 May 1919
- journal article
- Published by Mineralogical Society in Mineralogical Magazine and Journal of the Mineralogical Society
- Vol. 18 (86) , 327-338
- https://doi.org/10.1180/minmag.1919.018.86.04
Abstract
In the Geological Magazine for 1918 there appeared three papers discussing the origin of tile system of cracks ill septarian nodules. Dr. A. Morley Davies opened the discussion in a paper where, after a summary of earlier literature, he again put forward an older idea. Without adducing evidence, he considered : (a) that interposition of particles between those of the original matrix caused expansion which set up tensile strain in the growing body ; (b) that the cracking of the nodule was due to the relief of those tensile stresses.Keywords
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