ROCKS ABOUT BERWICK-ON-TWEED 315 



Calcareous shales with corals, and a thin coal. But these 

 beds are not the real Tuedian. They represent beds which 

 occur on the coast south of Spital and in the railway cutting 

 north of Scremerston Station, and their horizon is between 

 the Oxford and Wood End Limestones. They are not far 

 from the position of the oil shale which occurs there. 



A parallel fault north-east throws up these beds about 50 

 or 60 feet at the north end of the bay, and we come to the 

 thick sandstone which underlies them, and which occupies 

 most of the cliffs from here to Marshall Meadows. The dip 

 along here is very gentle, but the beds rise gradually as 

 we proceed northward. About 700 yards north of the bay 

 of the Burgess' Cove, or nearly a quarter of a mile beyond 

 Brotherstone's Hole, we come on a sandy limestone three or 

 four feet in thickness, associated with several feet of shale, 

 and this probably is the diminished representative of the 

 Wood End Limestone, which, at the Jack Tar Pit at Screm- 

 erston, was found to be onl}' seven feet thick. 



Sandstone rises again from below as we proceed northward, 

 and in St. John's Haven we find lying below this the 

 Dun Limestone, five or six feet thick, with many corals 

 (Lithostrotion.) This rises up as we go northward, till at 

 Marshall Meadows Bay it is some distance up in the cliff, 

 and we see 40 or 50 feet of sandstones and shales below. 

 We are now near the horizon of some of the Scremerston 

 Coals, which were at one time proved along this coast, 

 though, like the limestones, they are much deteriorated. 



The following is an estimate of the thicknesses of the 

 Marshall Meadows' Section : — 



Thick Sandstones, with some thin-bedded 



Sandstone and Shale in middle about 120 ft. 



Shales . . . . . . about 6 ft. 



Grey Limestone, with encrinites, producti, 



and corals (Dun Limestone) . . 4 ft. 



Coal . . . . . . few inches. 



Sandstone and some Shale, irregular . . 60 ft. 



Coal, to 6" (may be Fmvcett, but is 

 perhaps Robies Coal.) 



Sandstone and Shale. 



