340 ME. H. H. ARNOLD-BEMROSE ON THE GEOLOGY OF [Aug. 1903, 



to bend over in a south-easterly and north-westerly direction, and 

 to dip at angles of 30° and 15° respectively. 



No definite proof was found of volcanic detritus in the limestones 

 associated with the shales above the Mountain-Limestone. 



The bed of tuff, 6 feet thick, may represent the thinned-out 

 portion of the tuff-bed that reaches a thickness of about 140 feet in 

 the Tissington cutting. If this opinion be correct, the tuff in 

 the cuttings nearer Tissington occurs on a horizon about 60 feet 

 above the main mass of Mountain-Limestone ; and, since the lime- 

 stones for 80 feet above the thick tuff-bed contain volcanic detritus, 

 volcanic action in this part of the country must have continued 

 until between 100 and 200 feet of Yoredale rocks had been 

 deposited. 



11. Moat Low. 



In this cutting, which is a short one, the beds dip 20° in a south- 

 easterly direction. About 30 feet of limestone with bands of chert 

 are seen. The beds in the immediate neighbourhood dip in the 

 same direction as those in the cutting. In an old quarry east of 

 the cutting and on the footpath to Parwich Lees encrinital lime- 

 stones, with chert-bands in the limestones below them, are seen to 

 dip south-eastward at an angle of 20°. In another old quarry, near 

 O. D. 889*2, beds of massive limestone dip south-eastward at an angle 

 of 30°. Near the 5th milestone from Ashbourne dolomitized lime- 

 stones, with limestones containing Produetus and encrinite-stems, are 

 seen dipping south-eastward at an angle of 20°: while at the south- 

 eastern end of the cutting and lower down the hill, cherty lime- 

 stones are seen dipping 40° in a south-easterly direction. There is, 

 therefore, a syncline between the Newton-Grange and Moat-Low 

 cuttings, with its axis nearly parallel to the anticlinal axis of the 

 Newton-Grange cutting. 



12. New Inns (South). 



In this cutting from 20 to 30 feet of limestone may be seen. The 

 beds are at first nearly horizontal, and traversed by numerous calcite- 

 veins. They then dip 20° in a north-westerly direction, and at the 

 northern end are much broken up by joints, which are inclined 

 at an angle of 50° to 90° to the horizon. These limestones contain 

 encrinite-stems. 



13. New Inns (North). 



The beds consist of thin limestones which, on the whole, dip 

 nearly due south or south-south-east, so that, as we proceed towards 

 Buxton, we pass through successively lower beds in the series. 

 There are a few small folds, and several good examples of lenticular 

 beds of thicker limestone among the thinner ones. 



