356 Yorkshire Boulder Committee : Thirteenth Year's Work. 



Boulder Committee of the Hull Geological Society, 

 26th JULY 1899. 

 Reported byW. H. Crofts. 

 Brantinghamthorpe. 



Rhomb-porphyry, 3 in. x 2 in. x 2 in. West of the village, 

 in the sandhill field. 



Reported by F. F. Walton, F.G.S. 

 Coney Garth, near Brandsburton. 



Rhomb-porphyry, 6 in. in diameter. 

 Brigham Hill, near North Frodingham. 



Rhomb-porphyry. 



Reported by Thomas Sheppard, F.G.S. 

 Yedmandale, near West Ayton. 

 Rhomb-porphyry. 



Reported by J. W. Stather, F.G.S. 



Ayton, East. 



Garnetiferous schist. 

 Bainton-on-the-Wolds. 



Basalt, granite, grit, brockram. From the boulder clay in 

 the railway cutting east of the station. 



Brandsburton. 



Rhomb-porphyry. Two pebbles, 3 in. and 4 in. in diameter. 

 From the Barf Hill Quarry. 



Cayton Bay. 



Shap granite, 2^2 ft. x 2)A ft. x 2 ft. On the shore under 

 Red Cliff, 300 or 400 yards north of the fault. 



Elloughton, Brough. 



Augite-syenite (Laurvikite), 12 in. x 15 in. x 18 in. From the 

 Mill Hill gravel quarry, 100. feet above Ordnance datum. 



Filey. 



Elaeolite syenite. Two pebbles, 3 in. to 4 in. in diameter. 

 F rom the boulder clay on the Carr Naze. 



A mass of Upper Lias shale, 60 ft. long by 30 ft. broad, con- 

 taining many fossils, including Ammonites communis, Lcda ovum, 

 Belemnites sp., etc., embedded in the boulder clay beach, south 

 of the town. This boulder is situated 120 feet from the present 

 cliff, about half a mile south of the Mile Haven ravine (Primrose 

 Valley). 



Natural^ 



