A HISTORY OF NOTTINGHAMSHIRE 



west. We can now only ascertain the amount of this movement added 

 to all subsequent movements. This may be gathered from the deviation 

 from horizontality of a single wide-spread coal seam such as the Top 

 Hard, as shown in the following table obtained by subtracting the depth 

 of it in the sinking from the height above Ordnance Datum from which 

 the sinking commenced. 



TABLE II. SHOWING THE POSITION OF THE TOP HARD COAL ABOVE OR BELOW 

 ORDNANCE DATUM AT VARIOUS SINKINGS 



Wollaton New . 

 Hucknall New . 

 Kimberley. 

 Watnall .... 

 Broxtowe Wood. 

 Radford . . . . 

 Tevershall 

 Clifton .... 

 High Park, Greetly . 

 Newcastle colliery . 

 Clifton borehole . 

 Cinderhill . 



ft. 



ft. 



Watnall New . . 424 963 = 539 



Kirkby. . . . 360-1049 = 689 

 Hucknall Torkard 



No. i pit . . 3001163 = 863 



Newstead . . . 4161368 = 952 



Annesley . . . 460-1415 = 955 



Linby .... 297-1287 = - 990 

 Hucknall Torkard 



No. 2 pit . . 236-1230 = 994 



Bestwood . . . 2281236 = -1008 



Gedling . . . 190-1368 = -1178 



Shireoaks . . . 200-1523 = -1323 



Southcar . . . 15-319? = -3182 



There was subsequently a great amount of removal of the Carboni- 

 ferous rocks by denudation, so that the Coal-Measures and Millstone 

 Grit are lacking in the central part of the original coalfield, where the 

 Mountain Limestone appears, and the Upper Series in Nottinghamshire 

 are separated from their equivalents in north Staffordshire. The amount 

 of material thus removed within the county before the Permian period 

 can be shown by means of Table III. 



TABLE III. SHOWING THE POSITION ABOVE OR BELOW THE ORDNANCE DATUM OF THE 

 SURFACE OF THE COAL-MEASURES AT VARIOUS SINKINGS 



Kimberley 

 Watnall New 

 Annesley . 

 Kirkby . . 

 Watnall . . 

 Linby . 

 Cinderhill . . 

 Hempshill 

 Bestwood . 

 Shireoaks 



425- 26 = 

 424- 44 



46O IO8 = 



360- 45 : 



346- 50 = 



297- 25 : 



213- 25 = 



244- 91 = 



228 144 = 



2OO-2I5 = 



ft. 



+ 399 Clifton .... 



+ 380 Gedling . . . 



+ 352 Chilwell . . . 



+ 315 Clifton borehole . 



-f- 296 Ruddington 



+ 272 Edwalton . 



+ 1 88 Thurgarton 



+ 153 Owthorpe . . . 



+ 84 Southcar . 



15 Scarle . . . . 



On a comparison of these figures with those for the Top Hard 

 coal great differences in the amount of denudation appear, as shown in 

 Table IV. 



12 



