Contribution to the study of the physico-chemical structure of Clais

Open-File Report 54-28


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The Cormeilles-en-Parisis hill shows one of the best geologic sections of the Paris region. The 80 meter high working face of the quarry exposes the complete section of the "Ludian" [the youngest beds of the Eocene] with its alternations of the marl and gypsum. Above is the sequence of supra-gypseous marls of the [lower oligocene] Sannosian stage, overlain by a very complex series of alternation brackish water and lacustrine layers, from blue marls to Brie limestone, up through the white Pantin marls, brown marls containing the pelecypod genus Cyrena and green marls. These strata overlain by the [Middle Oligocene] Stampian beds represented by the Fontainebleau sands and Ostrea-bearing marls. 

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Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Contribution to the study of the physico-chemical structure of Clais
Series title Open-File Report
Series number 54-28
DOI 10.3133/ofrS428
Year Published 1954
Language English
Publisher U.S. Geological Survey
Description 138 p.
Country France
Other Geospatial Cormeilles-en-Parisis
Online Only (Y/N) N
Additional Online Files (Y/N) N
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