154 



PROF. T. T. GEOOM ON THE GEOLOGICAL [Feb. I9OO, 



in the quarry. The fault and the strip of sandstone must run 

 approximately parallel to the western boundary of the Archaean 

 massif in this locality. It is difficult to say precisely how the 

 relations just described have been brought about. Fig. 9 (p. 153) 

 is an attempt to explain the phenomena observed on the hypothesis 

 of three parallel faults, two of which are thrust-planes. Possibly all 

 three faults are parts of a fold of the main western fault. 



In fig. 10 the probable relations of this part of the Malvern Hills 

 to the area immediately on the west are shown. 



Fig. 10. — Section across North Hill and High Wood. 

 w. by s. 



High 

 Wood 



West Malvern 



[Scale : 6 inches = 1 mile.] 



WS=Wenlock Shale. 

 WL^Woolhope Limestone. 

 TS = Tarannon Shale. 



MS 2 =TJpper beds of May Hill Sandstone. 

 MS~ = Lower beds of May Hill Sandstone. 

 Arch = Archaean. FF= Faults. 



A point of some interest in connexion with the geology of 

 Xorth Hill is the former occurrence of a patch of Haffield Breccia 

 ('Permian') on the north-eastern slope. It was apparently first 

 observed by Murchison, 1 and also seen by Symonds 2 ' in the great 

 quarries on the northern flank of the North Hill,' but the precise 

 position of the deposit was not indicated, and I have been unable 

 to find any trace of it. 



A somewhat remarkable example of Drift at West Malvern may 

 be recorded here. The materials brought up from a well sunk last 

 year to a depth of about 50 feet, at the spot marked 339 on the Map 

 ( PI. VIII), immediately below the 800-foot contour-line, consisted 

 chiefly of purple May Hill Grit, May Hill Sandstone, and much 

 loose sandy material, together with large pieces of grey quartzose 

 May Hill Conglomerate, well rolled by stream-action. A large 

 Wenlock-Limestone coral (now in the possession of Mr. H. I). 

 Acland) accompanied these. The May Hill fragments were such as 

 might have been derived from the immediate neighbourhood, but the 



1 ' Silurian System,' 1839, p. 52, where he says: — '...The red sandy and 

 conglomerated beds are, however, visible in one or two spots, at and near Great 

 Malvern, on the upper side of the main road, adhering to the steep slopes of 

 the syenite.' He mentions, a line or two lower down, that the beds dip 35° 

 east-south-eastward. 



2 ' Eecords of the Kocks,' 1872, p. 415. 



