ON EBRATIC BLOCKS OF THE BRTTTSH ISLEH, 345 



By Mr. P. F. Kendall. 



Barugh Hill, near Robin Hood's Bay. — Many boulders of porphyrite 

 and two examples of a very coarse pisolite containing Nerincea. 



Thirley, near Cloughton. — Great gravel-mounds here are strewn with 

 large blocks, all of Jurassic sandstone, in numbers greatly exceeding what 

 may be seen elsewhere in Yorkshire. 



Whitby — Cliffs to West of Toivn. — A bed of gravel lying between two 

 beds of Boulder Clay, the lower dark grey in colour, the upper reddish, 

 contains the following rocks roughly in order of prevalence : Jurassic and 

 other sandstones, Maguesian Limestone, Carboniferous Limestone, basalt, 

 conglomerate (1 Sparagmite), Greywacke sandstone (or ? Sparagmite), 

 jasper. Alum Shale (a large block), Gryphsea incurva, ball of red Boulder 

 Clay. 



Wheatcro/t, near Scarborough. — In corner of second field W. of road, 

 Shap granite 2 feet long. 



Seamer. — The gravels between Seamer Quarries and Waydale House 

 contain very high proportion of basalts. 



Seamer Beacon. — The tower here is built of rough blocks, mainly of 

 Jurassic sandstone, but with large numbers of basalt or dolerite and 

 some Cheviot porphyrite. 



Yedmondale. — A pit shows gravel consisting of local stones with many 

 Cheviot porphyrites, some Greywacke, jasper, and a few granite pebbles. 

 Fragmentary marine shells are also found. 



Hutton Bushel. — In gravel pit on 200 feet contour. Many local stones 

 with Cheviot porphyrites, Magnesian Limestone (Roker type), Kimeridge 

 clay, gneiss, granite. 



Reported by Boulder Committee of the Hull Geological Society. 

 By Mr, Tiios. Sheppard, F.G.S. 



Burstwick Gravel Pit, Holderness — 

 Shap granite, 8 in. by 6 in. 

 Bhomb-porphyry, 4 in. by 4 in. 



By Mr. J. W. Stather, F.G.S. 



Atioick. — At the foot of cliffs — 



Shap granite, 18 in. by 20 in. by 14 in. 

 Augite-syenite (Laurvikite) 18 in. by 18 in. by 12 in. 

 Rhomb-porphyry, several pebbles. 



Fordon on the Wolds.— 2liQ feet O.D.— 

 Gneiss, 24 in. by 12 in. by 12 in. 

 Basalt, 30 in. by 24 in. by 24 in., planed on one side. 

 Carboniferous sandstone, 24 in. by 12 in. by 12 in. 



Kirkmoorgate, near Robin Hood's Bay. — 600 feet O.D. — 



Rhomb-porphyry, 7 in. by 4 in. by 4 in. 

 Also two smaller pebbles of same. 



Pert^e— Yorkshire Coast— 600 feet O.D.— 



In thick glacial gravel, quarry above railway stat'ion. Shap gramte 18 in. 



l3Y 15 in, by 12 in. 

 Rhorub-porphyry, Foar small boulders. 



