TRIASSIC STRATA OF LANCASHIRE. 115 



town, and appears to be a portion of the pebble-beds of 

 the Trias. It extends up the valley of the Darwen to the 

 weir above Bannister Hall, where the soft and variegated 

 sandstones, apparently pebble-beds, are seen ; and, after a 

 distance of one-third of a mile, soft yellow variegated and 

 red sandstones, at the base, of which a conglomerate (Per- 

 mian) rests unconformably on what appears to be limestone- 

 shale. 



The Eibble, between Walton and Lower Brockholes 

 Bridge, does not afford any evidence, so far as I saw, of 

 the underlying strata until we reach the latter place, where 

 a soft red sandstone, apparently the pebble-beds of the 

 Trias, makes it appearance, and is seen all the way past 

 Samlesbury Chapel and Lower Hall to near Barton^s 

 Boat, where it rests unconformably on Lower Carboniferous 

 strata. 



Near Cockersand Abbey, on the south side of the mouth 

 of the Lune, west of the town of Lancaster, below high- 

 water mark, is a small patch of what appears to be Per- 

 mian sandstone. 



To the north of the last-named place, across the Lune, 

 at Bobshaw Point, the same soft red sandstone makes its 

 appearance on the beach covered by the tide, and appears 

 to be a continuation of that rock seen to the south, but 

 much better exposed. " With these exceptions, no further 

 evidence has yet been obtained of any Permian beds until 

 we reach Bougham Point. From this last-named place to 

 Stank is a portion of Morecambe Bay, and a low sandy 

 district, of which little or nothing is known. At the old 

 magnesian-limestone quarry at Holebeck, near Stank, de- 

 scribed by me many years since*, Mr. Bolton, of Sedgwick 

 Cottage, near Ulverston, informs me that a bore-hole had 

 been made which showed blue shale to the depth of 150 



* Transactions of the Manchester Literary and Philosophical Society, 

 vol. viii. (2nd series), p. 4x3. 



i2 



