. The Quarterly journal of the Geological Society of London . estones,with oysters also, and the following fossils—Cardium Dufre-noycum, Cardium Verioti, and Trigonia truncata. These pass intovarying limestones, amongst which are the beds containing greatbranching earth-filled hollows, hence known as the carious lime-stones. They are well developed—partly chalky, partly rubbly—all the way to Trannes, where a large quarry shows the last of thejurassic rocks in this district. In these beds, which would probably,if searched, reveal a good fauna, occurred Lima suprajurensis, L. bo-loniensis, Pecte
. The Quarterly journal of the Geological Society of London . estones,with oysters also, and the following fossils—Cardium Dufre-noycum, Cardium Verioti, and Trigonia truncata. These pass intovarying limestones, amongst which are the beds containing greatbranching earth-filled hollows, hence known as the carious lime-stones. They are well developed—partly chalky, partly rubbly—all the way to Trannes, where a large quarry shows the last of thejurassic rocks in this district. In these beds, which would probably,if searched, reveal a good fauna, occurred Lima suprajurensis, L. bo-loniensis, Pecten suprajurensis, Interna fragosa, Terebratula subsella(var. minor), and teeth of We here therefore do not seebeds so far up in the series as those of the AEarne valley, no repre-sentatives of the spotted limestones or of the vacuolar oolite beingpreserved; but the lower portions seem to become more and morefossiliferous as we pass westward. 528 J. F. .BLAKE ON THE UPPER Pig. S.—Map of Part of the Valley of the Laignes. (Scale 1: 80,000.). 4 The next traverse, though not along the valley of a river, is anexceedingly instructive one, as we get an almost complete sectionfrom the Corallian to the uppermost beds. This is across the hillthat intervenes between Gye-sur-Seine and the Eiceys in the south-western portion of the department. Commencing at the formerplace, we find a cliff cut at the road-side, and all the rocks laid the base is (1) shelly limestone, similar to that at the top of theClairvaux section, with indications of bastard oolite, like the Di-ceras-beds of Doulaincourt, and containing crinoid stems and Rhyn-chonella pinguis. There is therefore still an absence here of the greatDiceras-masses ; and the type is conformable to that of the valley ofthe Aube. Next (2) are from 30 to 40 feet of chalky limestones, split-ting into rather thin layers, with Pholadomya cingulata, P. cor ?, andAnisGcardia Legayi. Above this comes (3) a 2-foot band of a
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Keywords: ., bookcentury1800, bookdecade1840, bookidquarte, booksubjectgeology
