TRANSACTIONS OF THE SECTIONS. 7-^ 



The order and sequence of these strata are indicated and maintained 

 along the lower edge of the range of the large coal-field of Westphalia, 

 the beds successively rising to the surface at angles varying from 30° 

 to 40° in perfect conformity, and showing throughout the clearest and 

 most complete transition into each other. It is particularly to the 

 group No. 3 that the author directs the attention of British geologists, 

 because it is in all respects identical with the culm-bearing strata of 

 North Devon and Cornwall, first described by Professor Sedgwick 

 and himself as being a portion of a true coal-field, and not belonging 

 to the grauwacke or older transition rocks, to which they had formerly 

 been referred*. The Westphalian sections establish the geological 

 position of the culm strata of Devon and Cornwall more cleai'ly than 

 had been done by any stratigraphical evidence in Great Britain, by 

 presenting masses of mountain limestone and Devonian rocks rising 

 out from beneath the culmiferous schists, and thus the precise age of 

 the latter is demonstrated. 



A General Outline of the Geology of Warwickshire, and a Notice of 

 some neio Organic Remains of Saurians and Sauroid Fishes belong- 

 ing to the New Red Sandstone. By G. Lloyd, M.D., F.G.S. 



Dr. Lloyd briefly described, with the assistance of a coloured map 

 of the county, and a section extending N.W. and S.E. from Birming- 

 ham to Chesterton, the general distribution of the coal of North War- 

 wickshire, the new red sandstone, the lias, and the oolitic outliers in 

 the southern part of the county. 



The coal-field, he observed, extends from Tamworth in a direction 

 N.N.W. and S.S.E. to Griff, where it is bent in a line nearly due south, 

 and terminates at Wyken; whence it is evident that this coal-field has 

 a double axis. The coal strata are thrown up at a highly inclined an- 

 gle, with a westerly and south-westerly dip, by the protrusion of thick 

 masses, sometimes preserving their lines of beddings of quartz rock 

 (altered Caradoc sandstone) and greenstone, on the eastern edge of the 

 field. The quartz rock, formerly described as millstone grit, of Harts- 

 hill and Tuttlehill, is extensively quarried for roadstones, and for the 

 manganese with which it abounds. No organic remains have yet been 

 observed. 



The coal-measures were probably elevated during the deposition of 

 the lower new red sandstone, but anterior to that of the middle and 

 upper members, as is shown by the undisturbed sandstones and marls 

 of Attleborough and Marston. It is probable that this coal is con- 

 nected with that of Charnwood Forest rather than with the great field 

 of South Staffordshire, there being evidence of rapid thinning out on 



* See Report of the British Association for 1836. 



