126 MESSES. A. J. JTTKES-BEOWNE AND W. HILL.: [May 1 896, 



iy. a coeeelation of the cenomanian deposits in the 

 Calvados, Okne, and Saethe. 



1. Calvados. 



Having studied in detail the sections of the cliffs at and west of 

 Cape La Heve, and having satisfied ourselves how much of the series 

 corresponded to our Gault and Upper Greensand, and how much to 

 our Lower Chalk, we desired to ascertain the stratigraphic relations 

 of this combined Albien and Cenomanian series and that of the 

 typical Cenomanian in the Orne and Sarthe. 



This was a more difficult task, because no French geologist had 

 explored the ground for this special purpose, consequently the 

 exposures had to be sought for. Sections in the middle and upper 

 part of the Cenomanian, such as occur near Honfleur, were of no use 

 to us : what we required were exposures of the basement-beds, in 

 order to judge how far the Havre equivalent of the Upper Green- 

 sand extended to the southward, and whether the base of the 

 Cenomanian continued to present the same character as that ex- 

 hibited by it at Havre. 



We soon found that it did not, for the following section was seen 

 at Moulineaux, about 2 miles S.S.W. of Honfleur, in a pit which 

 had been recently dug in the side of a hill for the formation of a 

 washing-place or reservoir. Descending order : — 



Feet. Ins. 

 Soil, chalk-rubble, fragments of chert and 



brownish clay 8 



,^3. Yellowish-grey, soft, marly chalk, very glau- 

 conitic, and containing hard siliceous concre- 

 tions, also many fossils : Bhynchonella dimi- 

 CenomAnian. j diata, Bh. Grasiana, Megerlia lima, Ostrea 



vesiculosa, spines of Cidaris vesiculosa 4 



2. A bed of hard masses in soft grey and very 

 glauconitic marl, with Bh. dimidiata, Cato- 



pygus carinatus, etc 3 3 



Upper f 1. Dark grey, exceedingly glauconitic, calcareous 

 Greensand. \ marl, seen for 2-3 



The material of Bed 2 resembles that of the Chloritic Marl of 

 La Heve without the phosphates, the glauconite-grains being large, 

 but the cementing-material of the hard masses proves to be calcite. 



The overlying chalk is similar to that occupying the same 

 position near Havre, its glauconitic grains being small, and we 

 think there can be no doubt that the base of the Cenomanian was 

 here exposed. 



Passing to the valley of the Touques and proceeding by the 

 high road leading from Pont l'Eveque to Lisieux, the next exposure 

 noted was about 200 yards east of Les Forges, on the road leading 

 to Blangy. Here a strong spring is thrown out, and yellowish-grey 

 glauconitic chalk was shown just above it, while on the other side 

 of the road a freshly-cut ditch showed grey and very glauconitic 

 marl, but without hard lumps similar to those of the basement-bed 

 near Honfleur. 



