50 C Fox-Strangways — Geology of the 



In the large cutting west of Hucknall Torkard the marls repose 

 on the Magnesian Limestone, the whole being surmounted by about 

 six feet of pebbly clay ; but the section was not cut to its full depth 

 at the time of my visit. At the south end the limestone is again 

 much disturbed, and dips to the south-east at an angle of 15°, passing 

 under the marls. There is no doubt that the stratification here is 

 much more broken up than shown on the old geological map, and 

 that a good deal more marl crops out than is represented there. 



Fig. 1. — Section in culvert nortli of Lambert Hill, Hucknall Torkard. 

 Copied from a drawing by Mr. Allen. 



Several cuttings in marl were observed between this spot and 

 the Leen valley, where the Permian beds pass beneath the Trias. 

 Over this ground there also appears to be a certain amount of 

 pebbly gravel ; but, from the railway-section alone,' it is not clear 

 of how much importance these deposits are. 



At Bulwell the line crosses the Leen valley by a lofty viaduct, 

 the excavations for the piers of which exposed sections in marl and 

 limestone on the west side of the Midland Railway, and in sandstone 

 on the east side. 



The line now enters the Trias, the sandstones of the Pebble 

 Beds being exposed in several fine cuttings between here and 

 Nottingham, beneath which town it is carried in a series of tunnels 

 that were easily excavated in these soft false-bedded sandstones. 



On the south side of Nottingham the piers for the bridge over 

 the Trent were sunk through from 10 to 12 feet of river gravel 

 on to the Bunter Sandstone, and showed that the latter was more 

 eroded on the southern side than on the northern, the solid rock 

 being reached at 57 feet above ordnance datum on the northern 

 side, while it was 52-5 feet at the south abutment. 



After crossing the broad expanse of the Trent Alluvium at 

 Wilford the line enters a deep cutting in the marls of the 

 Keuper series, and there is a good section of the band of sandstone 

 that is shown on the old geological map dipping at 2° to the south- 

 east. Towards the southern end of this cutting the marl is overlain 

 by about 8 feet of sand and gravel, which appear to be banked 

 along the foot of the hill. 



At Euddington the line crosses a depression in the marl filled 

 with sand under about 3 feet of dark peaty soil which extends past 

 the station. This hollow has evidently been an old swamp similar 

 to the larger one at Gotham alluded to below. At the side of the 

 railway here is the boring which has been recently carried to a 

 depth of 1873 feet; this boring beneath 684 feet of Trias penetrated 

 over 400 feet of strata, supposed to represent the lower portion of 



