Paleontological Evidence of Variations in Length of Synodic Month since Late Cambrian
- 15 November 1968
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 162 (3855) , 792-796
- https://doi.org/10.1126/science.162.3855.792
Abstract
The values of length of synodic month, obtained from tidally controlled periodical growth patterns in mollusks and stromatolites for several geologic periods, indicate that the deceleration rate of the earth's rotation has not been constant. Two breaks in slope, in the Pennsylvanian and Cretaceous, may be related to changes in distribution of continents, oceans, and adjacent shallow seas.Keywords
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