TRIASSIC STRATA OF LANCASHIRE. Ill 



stone into Lancashire ; and this rock runs into the Trias 

 so regularly that it will be very difficult to separate it by 

 any well marked boundary from the lower soft sandstone 

 or pebble-beds of the Trias, as laid down and described in 

 the maps and memoirs of the Geological Survey. 



It is pretty clear, if some of these Permian and Triassic 

 sandstones are to be classed by their physical characters 

 alone, that certain of the latter rocks, as laid down by the 

 Geological Survey in the Huyton, Croxteth, and Knowsley 

 districts, will probably have to be put into the Permian, 

 for no one can tell the red flaggy sandstone of Knowsley 

 Quarry from the Hawcoat and St. Bees sandstones, and it 

 must be taken as Permian, just as the Hawcoat rock is 

 identified with that at St. Bees. 



The Triassic beds in South Lancashire, as seen near 

 Liverpool, according to Mr. Hull, are as follows"^ : — - 



Formation. Division. Subdivision. 



^ I. Eed Marl, with beds of Upper Keuper 

 I Sandstone. 



f Keuper -i 2. Lower Keuper Sandstone, or Water- 

 Npw T? d ' stone, with a Base of Breccia, or Con- 



Sandstone j r I. Upper Eed 'and Mottled Sandstone. 



^^ Bunter < z. Pebble-beds. 



[ 3. Lower Eed and Mottled Sandstone. 



Next, as seen near Manchester, where the same author 

 classes the bunter as composed of 



1. Upper red and mottled sandstone. 



2. Pebble-beds. 



It will be seen from the above classification that the lower 

 soft red mottled sandstone of Liverpool is left out at Man- 

 chester altogether, the lowest member of the Trias there 

 being the pebble-beds. There certainly is the Collyhurst 

 or Vauxhall sandstone, which would pass very well for the 

 lower soft red; but the Newtown fossils found above it 



* Manchester Geological Society's Transactions, vol. ii. p. 23. 



