590 DENUDATION AND SCENERY. 



The Secondary or Mesozoic ranges would include : — 



North York Moors (Lias and Oolites) : Cleveland Hills, Burton Head, 14S0 ; 



Rosebury Topping, 1022 ; Hambleton Hills (Corallian Beds), 1000 ; 



Howardian Hills (Lower Oolites), 5S0. 

 Edgehill (Marlstone), 826. 

 Cotteswold Hills (Oolites): Broadway Hill, 1040; Leckhampton Hill, 9785 



Cleeve Cloud, 1093 ; Bredon Hill, 979. 

 Yorkshire IVolJs (Chalk), Wilton Beacon, 805. 

 Lincolnshire IVolils (Chalk), south of Caistor, 549. 

 East Anglian Hills (Chalk), Gog Magog, 302. 

 Chiltern Hills (Chalk), 820. 

 Bc) kshire Dowjis (Chalk), Inkpen Beacon, 972. 

 Hampshire Downs (Chalk), Butser, near Petersfield, 882. 

 Wiltshire Doivns : Marlborough Doions (Chalk), 887 ; Long Knoll, Maiden 



Bradley (Chalk), 948 ; Alfred's Tower, Stourton (Upper Green- 

 sand), 800. 

 Blackdown and Haldon Hills (Upper Greensand), 600 to 850. 

 Dorsetshire Hills (Upper Greensand) : Pillesdon Pen, 934, Lew^esdon Pen, 



927 ; (Chalk) BuUbarrow, near Blandford, 927, Purbeck ridge, 654. 

 Wealdcn Heights: Crowborough Beacon (Hastings Beds), S03 ; Leith Hill 



(Lower Greensand), 967 ; Hind Head (Lower Greensand), 894. 

 N'orth Do7uns (Chalk), Limpsfield, 876. 

 South Downs (Chalk), Ditchling Beacon, north of Brighton, 813 ; Chancton- 



bury Ring, north of Worthing, 784; Duncton Down, between Arundel 



and Midhurst, 837. 

 The Tertiary strata make no regular lines of hills, but the higher grounds form 

 picturesque tracts, as near Bagshot, Weybridge, etc., while the isolated hills of 

 Creech Barrow (see Fig. 71, p. 423), Harrow, Hampstead, Highgate, Langdon 

 Hill, Shooters Hill, etc., command extensive views. 



Vales. 



In the Pahrozoic rocks are the Vales of Radnor, Teifi, and Towey in South 

 Wales (Cambrian and Silurian) ; the Vales of Llanrwst and Conway (Silurian), 

 and Llangollen (Silurian and Carboniferous), in North Wales ; and the Vale 

 of Kendal (Silurian) in Westmoreland. 



In the Neiv Red Sandstone strata are the Vales of Exeter and Taunton (Taunton 

 Dean), Wrington, Berkeley, Clwyd (Denbighshire), Trent, York, and Eden. 



In the Lias, the Vales of Marshwood, Ilchester (partly Alluvium), Glamorgan 

 (partly Carboniferous, etc.), Gloucester and Cheltenham, Moreton, Evesham, 

 Red Horse^ (Warwickshire), Belvoir, Catmoss (Oakham), Mowbray and Cleveland 

 (Yorkshire). 



In the Oxford Clay are the Vales of Blackmore (Dorset) and Bedford. 



In the Kimeridge Clay are the Vales of Wardour (Wiltshire and Dorsetshire, 

 partly Portland and Purbeck), Shaftesbury (Dorset), and Pickering (Yorkshire). 



In the IVealden district is the old Vale of Holmsdale or Valley of tlie Gaiilf, 

 and the long plain of the Weald Clay. 



In the Ganlt and Upper Greensand are the Vales of White Horse (near 

 Shrivenham and Wantage, see p. 421), Aylesbury (partly also Kimeridge Clay and 

 Chalk Marl), and Pusey or Pewsey, and Warminster in Wiltshire. 



In the Chalk and Eocene strata there is the Vale of Rennet in Berkshire. 



Plains. 



The indefinite areas termed Plains are chiefly Secondary and more recent. 

 Thus, the Cumbrian Plain (including the Vale of Eden), the Cheshire Plain, the 



^ The Vale of Red Horse was so termed from a figure cut in the ferruginous 

 sands of the Middle Lias ; it is now obliterated. C. T. Clough, Rep. Rugby 

 School Nat. Hist. See. 1871, p. 17. 



