188 SECTIONS OF BATH AND YORKSHIRE OOLITES. 



that dry land existed somewhere in the vicinity, at the period when 

 the oolitic beds were formed or deposited ; but no indication that the 

 land was inhabited by terrestrial quadrupeds of the class mammalia, 

 has been hitherto discovered, except in the slate of Stonesfield. In 

 Sussex, the strata above the oolite contain the bones of the megalo- 

 saurus and crocodile, and those of turtles, birds, and fish, similar to 

 the fossils of Stonesfield ; but the bones of mammiferous quadru- 

 peds are wanting, and many of the shells are fluviatile. Where was 

 the island on which the animals, that have left their bones in the 

 strata of Stonesfield, lived and flourished? This question will be 

 considered in the brief chapter I propose to give of the Geology of 

 England. 



The oolite formation, in one waving range of hills, broken only by 

 the vale of the Humber, extends from the sea coast of Dorsetshire 

 near Bridport, to the northern extremity of the Cleveland Hills in 

 Yorkshire. " The outcrop of the oolite beds forms the south-western 

 escarpments of this range ; and it is truly remarkable, that not a ves- 

 tige of this formation is found beyond this range, in any of the mid- 

 land and north-western counties of England. But, some traces of 

 the oolite series have been discovered by Professor Sedgwick, on 

 the north-eastern coast of Scodand, and in the Isles of Sky and 

 Mull in the western Hebrides. 



It may be useful to present the reader with the order of success- 

 ion and thickness of the beds of oolite and lias, as they occur in two 

 distant parts of England, the Badi district, Somersetshire, by Mr. 

 Lonsdale, and the Eastern Moorlands of Yorkshire, by Mr. J. Phil- 

 lips. They are given in a descending series. 



Bath District. Feet. Eastern Moorlands. Feet. 



Kimmeridge clay, - - 150 Calcareous grit, - - 60 



Upper calcareous grit, - 10 Coralline oolite, - - 60 



Coral ragg, ) - - 40 Calcareous grit, - - 80 



Clay, \ • - 40 Oxford clay, - - - 150 



Calcareous grit, ) - - 50 Kelloway rock, - - 40 



Oxford clay, - - - 300 Cornbrash, - - - 5, 



Kelloway rock, - - 5 Upper sandstone, shale, and coal, 200 



Cornbrash, - - - 16 Impure limestone, - - 30 



Forest marble 



Clay, - - - 



Sand and grit, 



Clay, - - - 



Coarse oolite, 



Sandy clay and grit, 



Bradford clay. 

 Great oolite, - - ' - - 140 

 Fuller's earth, - - - 150 

 Inferior oolite with sand and grit, 130 

 Marlstone, - . . - 10 

 Upper lias marl, - - - 200 

 Blue lias, .... 50 

 White lias, - - - - 10 

 Lower lias marl, resting on red 



marl and sandstone, 



Lower sandstone, shale, and coal, 500 

 15 Ferruginous beds and lower oolite, 60 

 40 Upper lias, - - - 200 

 10 Marlstone, - - - 150 



25 Lower lias resting on red marl ) 

 10 and sandstone, ( 

 50 



500 



20 



