260 



J. F. .BLAKE AND W. H. HUDLESTON ON 



18. On the Corallian Rocks of England. By the Rev. J. F. Blake, 

 M.A., F.G.S., and W. H. Hudleston, Esq., M.A., F.G.S. 

 (Read January 10, 1877.) 



[Plates XII.-XVIL] 



Table of Contents. 



Page 

 Introduction 261 



I. The Weymouth District... 262 

 Nothe Grits and Clays ... 263 



Bencliff Grits 264 



The Osmington Oolite ... 265 



The Trigonia-beds 266 



Linton Hill 268 



The Sandsfoot Clay and 



Grit 270 



The Abbotsbury Ironstone 273 



II. Tbe North-Dorset District 275 



Section at Sturminster . . . 276 



Gillingham 278 



Cucklington and Todbere . 279 



Langham, &c 280 



III. TheNorth-Wiltshire,Berk- 

 shire, and Oxfordshire 



Range 283 



The Westbury Ironstone... 284 



Steeple Ashton 286 



Seend 287 



Coral Rag of Westbrook . 288 



L. C. G. of Conygre 289 



Oolite of Came 289 



Rag of Hillmarton 291 



Oolite of Goatacre 292 



Sections at Catcombe 294 



Wootton Bassett and Pur- 

 ton 295 



Highworth 296 



Faringdon 301 



Sections east of Faringdon 303 

 Quarry near the Lamb and 



Flag 304 



Noah's Ark and Marcham 305 



Cumnor 308 



Headington and neigh- 

 bourhood 308 



Quarries at Wheatley 311 



Ampthill Clay and Els- 

 worth Rock 313 



IV. The Cambridge Reef 313 



Limestones of Up ware ... 313 



V. The Yorkshire Basin 315 



Introduction 315 



1. The Scarborough district 317 



Section at Filey Point .. . 318 



Forge-valley section 321 



The Lower Limestones 323 



Page 

 V. 1. (continued.) 



Scarborough Castle Hill 323 

 The Intermediate Series 325 

 The Upper Limestones... 325 

 Coral Rag of Ayton &c. 327 

 The Hackness Outlier ... 329 



2. The Pickering district ... 333 

 General Section, Newton- 

 dale 333 



Correlation with neigh- 

 bourhood 341 



Seven-valley section 346 



U.C.G. of Kirkby Moor- 

 side 348 



3. The Hambleton district . 349 

 Section across the Ham- 

 bleton Massive 349 



Lower Calcareous Grit . 349 

 The Hambleton Oolite... 351 

 Middle Calcareous Grit . 352 



Coralline Oolite 353 



Coral Rag 354 



Upper Calcareous Grit . 355 

 Section from Ampleforth 



Beacon to Oswaldkirk 356 

 Nunnington Cutting 359 



4. District of the Howardian 



Hills 361 



L. C,G. of Castle Howard 



Park 361 



Quarry in Hovingham 



Park 362 



Passage-beds,&c.,Appleton362 

 Ditto, Brows Quarry, 



Malton 364 



Coralline Oolite of Mal- 

 ton, &c 365 



Coral Rag west of Derwent 368 

 Sequence at Hildenley . . . 372 

 Region east of Derwent . 373 

 North Grimston to Bur- 

 dale 374 



General Summary, with com- 

 parative sections 381 



Conclusions 388 



Descriptions and Notes on the 



Fossils 391 



Description of a new species of 



Araucarites 402 



