174 DAVIS : SECTIONS IN THE LIASSIC AND OOLITIC ROCKS OF YORKSHIRE. 
feet of Lower Lias is exposed, and the symmetrical terraces formed 
by the sandy beds of the Middle Lias, and the jet rocks of the Upper, 
form marked features in the valleys, especially on the southern slopes. 
Upper Oolites 
Portlandian beds 
Middle Oolites 
Kimmeridge Clay 
('Upper calcareous grit 
Upper limestone 
Middle calcareous grit 
Lower Limestone .. 
Lower calcareous grit 
Oxford clay .. 
^Kelloway rock 
1 Cornbrash 
Upper estuarine beds 
Scarborough or grey limestone 
Lower Oolites ' Middle estaurine beds 
" Millepore beds 
Lower estaurine beds 
(with Eller Beck bed) 
Lias 
[ ' ' Dogger " of Blea Wyke ... 
C Alum Shales 
Upper Lias X Jet beds ... 
^Grey shales 
( Ironstone beds 
Middle Lias \ a , . , 
^ Sandy snales 
Lower Lias 
-J 
I t, v 
FIG. 2. — VERTICAL SECTION OF LIASSIC AND OOLITIC SERIES. 
The moorlands, which form the watershed between the Esk and the 
tributaries of the Derwent, are coincident with an anticlinal, the 
rocks on the north having a northerly dip, whilst those on the south 
The streams draining southwards have 
dip in a southerly direction. 
