Vol. 59.] THE ASHBOURNE AND BUXTON RAILWAY. 341 



14. Alsop-en-le-Dale. (See PI. XXII, figs. 1 & 2.) 



While this cutting was in progress, some very good sections of 

 contorted strata belonging to the Mountain-Limestone were seen. 

 Some of the best are now covered by a wall and a bridge, over 

 which the turnpike-road passes. 



The bearings of three of the anticlinal axes were taken, and 

 found to be north-north-west and south-south-east, which is the 

 same direction as the longer axis of the Newton-Grange dome. 



The beds at first dip south-east by east, roll over in an anticline, 

 and dip north-west by west ; where the bridge has been erected 

 they are bent into a sharp syncline and anticline. A sharp anti- 

 cline follows, the beds then roll over into a more gentle anticline, 

 are bent into a sharp syncline, and after passing through a short 

 anticline and syncline, roll over a longer anticline and dip gently 

 about 20° a little north of west. The beds contain chert, and are often 

 dolomitized and traversed by veins of calcite • a fissure about 3 feet 

 wide, on the south-western bank (down-line), is filled with clay. 



Rough measurements of the beds show that a thickness of about 

 85 feet of limestone is seen in the cutting ; and that, owing to the 

 numerous folds into which the beds have been thrown, the difference 

 in horizon of the beds at opposite ends of the cutting amounts only 

 to about 10 or 15 feet. 



15. Nettly Low. 



This cutting is a small one, and only about 6 feet in depth. The 

 beds dip as a rule nearly due east, towards the valley of the Dove. 



16. Cold Eaton. 



This cutting is in massive limestone with six clay-partings. The 

 lower beds are at the Ashbourne end, and the dip is about 5° north- 

 north-eastward. The lowest limestones below and up to the sixth 

 or lowest clay-bed seen, consist of a white, granular and in part 

 oolitic, limestone, with small pebbles of a previously-consolidated 

 limestone. Other beds of limestone have the granular structure in 

 most cases above and below a bed of clay. The clay-partings vary 

 in thickness, and are sometimes variegated in differently-coloured 

 layers. The upper beds of limestone contain a greater quantity of 

 Productus than the lower, and are of a bluish-grey colour. 

 The following beds were measured :— 



Thickness in 

 feet inches. 

 Grey limestone, the upper parts containing Productus 

 and passing down into a bluish-grey limestone. Dip 



5° N.N.E. (1073) 110 



First clay-parting, varying in thickness from 6 to 10 



inches 1 5 



Massive limestone 32 



Carried forward 143 5 



