TRIASSIC STRATA OF LANCASHIRE. 



Robshaw Point Section. 

 Distance, ^ mile. 



w.s.w. 



123 



E.N.E. 



This is seen on the north of the Lune^ about 2 miles 

 south of Hey sham. The cliff from that village to near 

 Robshaw Point is composed of millstone-grit^ of dark red 

 colour"^. Near Heysham it is traversed by a vein of 

 sulphate of barytes and red oxide of iron^ running in a 

 direction from N.E. to S.W. The dip of the strata there 

 is W.N.W.^ at an angle of 23°. As you approach Robshaw 

 Point_, the millstone is not so coarse in grain^ has a good 

 deal of false bedding in it^ and is parted by layers of red 

 stone and red shale. The dip in the cliff is to the south, 

 at an angle of 11°. Below the cliff, on the beach, a piece 

 of millstone is seen dipping W.S.W. at 20°. A little to the 

 south of this point, about 350 yards, is seen a patch of soft 

 red sandstone, coarse in grain, but containing no pebbles, 

 mottled with brown and white colours, having traces of 

 black oxide of manganese in it, and very false-bedded. 

 Near to high-water mark it dips to the W.S.W. at 35°; 

 but at its extreme west, about 300 yards towards low-water 

 mark, its dip is only 22°. Its range is W.N.W. and E.S.E. 

 No trace of a conglomerate could be seen on its dip, the 

 uppermost beds disappearing in the sand. On its W.N.W- 

 range it likewise disappeared in the sand, and could not be 

 traced nearer than 350 yards to the patch of millstone on 

 the beach previously alluded to. 



Altogether about 120 yards in thickness of this Permian 

 sandstone is exposed; and, from its range and dip, it appears 



* This stone is coloured as Trias in the Geological Map of the Geological 

 Society. 



