"I 



MIDDLE ALBIAN STRATIGRAPHY 



satiiiu (Michelin) was found in sitn enabling a direct correlation to be made with 

 Courcelles. Bed 2 (ii) at La Vendue Mignot corresponds to 2 (ii) at Courcelles, but 

 yields a somewhat higher percentage of part-phosphatised fossils. The remainder of 

 Bed 2 is too deeply weathered to permit the recognition of the remaining subdivisions 

 seen at Courcelles, although its fauna grosso modo is the same as that listed above. In 

 the soil at about the middle of the northern face of the pit, there are pieces of well 

 weathered sandy marlstone yielding the fauna of Bed 3 at Courcelles. 



Although this is the nominated type section of the lyelli Subzone proposed by P. & 

 J.-P. Destombes it shows neither the relationship with the eodentatus Subzone below 

 or the spathi Subzone above. Neither does it show a complete sequence in the lyelli 

 Subzone itself. 



Bed 



Li t hology 



Ft Ins M. 



Fragments of gritty marlstone in subsoil. 



Very weathed bullish sllty clay with some limonitic fossils 

 in the lower part. 



(ii) Slightly lighter clay with part-phosphatised part-limonitic fossils. 



(i) Weathered buffish sllty clay with a few limonitic fossils. 



Weathered gritty glauconltic buffish clay. 



Fig. 41. Section in Gault at the Tuilerie Le Clerc, c. 200 yds W. of the D 1 road and a few- 

 hundred yards S. of the D 108 road, at La Vendue Mignot, on the N. side of the Foret 

 d'Aumont, Aube. 



(f) St. Florentin area (Yonne) 



The early work of Ebray (1863) and Hebert (1863) did not present a true picture 

 of the Albian succession in the area of St. Florentin, and Lambert (1894, 1913) was 

 the first worker to give a more correct sequence. Lambert's sequence was the one 



