Transgressive-Regressive-Transgressive Series

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Diagram showing the relationships of a transgressive-regressive-transgressive series. A hiatus is found at the base of the transgressive series and between the regressive and upper transgressive series. Owing to the vertical exaggeration of the scale the essential parallelism of the strata is not expressed.


Amadeus W. Grabau A Textbook of Geology (Boston: D.C. Heath & Co., 1920) 615


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