Sandy 

 bed, 5 ft., 

 including 



90 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Julie 17, 



Sandstone with partings of shale, the top "pipy," the ft. in. 



bottom laminated; — Tancre.dia, Modiola, &c 4 6 



Soft clay 6 in. 1 , fi 



Pale shale with Brachyphylla and other plants. 1 ft. J 

 Ironstone in shale, with Trigonia, Cardinia, &c, in 



situ 1 



Ironstone top, containing Trigonia, Pinna, Gervillia, 



and Pecten 1 



Sandstone with ironstone pins and small shells 2 6 



Grey sandy part 1 6 



Nodular ironstone in laminated shale, with Modiola, 

 &c. Here sulphuret of zinc occurs in nodules and 



in shells 5 



Sandy bed, with ironstones and many shells of Pho- 



ladomya acuticosta, Lima gibbosa, &c 1 



Shale with Pholadomya, Ostrea, Avicula, Natica, &c. 1 3 

 Skerry sandstones and shale with scattered plants ; — 



Pholadomya 4 



Shales with some ironstone in the lower part, scat- 

 tered traces of plants ; — Pentacrinus 12 



Below is the Oolite d. 



d. — The oolite with its upper laminae of Cricopora has been esti- 

 mated at 1 5 feet. It seems not necessary to enter into details re- 

 garding it at present. It may be recognized at the point north of 

 Cayton Bay and at Cloughton, though the superincumbent strata 

 are widely different at these two points. Either this or the beds 

 marked e 2 appear in all the region to the north as far as Whitby, to 

 the north-west as far as Ingleby, and to the west as far as Thirsk, 

 from whence it can be traced to the southward. 



c. — The series below these oolitic beds has been sufficiently de- 

 tailed in the ' Illustrations of the Geology of Yorkshire/ It consists, 

 from Cloughton northward, in the upper part, of a thick series of sand- 

 stones and shales ; the sandstones are regular, solid, partially lami- 

 nated, some containing jet, some waved, some containing branching 

 forms like fucoids. The series changes below to the more usual 

 aspect of shales and sandstones which accompany coal, several rich 

 plant-layers occur, and at about 100 feet deep in it coal is observed. 



Thick sandstones succeed, GO feet. 



A series of sandstones and shales, 200 feet. Vertical Equisetites 

 in places. Coal. 



Grit rocks and thin shales, with ironstone bands and Cycadacece, 

 60 feet. 



b. — Inferior oolite. 



This is represented on the coast bv about 70 feet of sandstone — 

 of which 



30 feet are fine-grained yellow, micaceous, irony sandstones, in 

 large blocks variously bedded and jointed, containing several 

 layers of pebbles and shells ; the top is very irony, but 

 without fossils. Nerincea, Actceon, Trigonia, Astarte, and 

 many other shells. 

 20 feet are fine-grained yellow micaceous sandstone, with nests 

 or irony masses of Serpulce, Li?igulce, &c. (Lingula Beanii) . 



