On the Physical Geology of the Neighbourhood of Dublin. 161 



List of Places with Geological Phenomena of Special 



Interest. 



Shenick's Island, Skerries. Lower Silurian, <tc. 



Lough Shinny and coast on each side. Limestone and Upper Shales, 



strong contortions, reversed fault, fossils. 

 Malahide shore. Lower Limestone Shale. 

 Portrane. Lower Silurian limestone, with fossils, &c. 

 Lambay Island. Lower Silurian limestone with fossils, felstone 



porphyry, remnant of Old Red Sandstone (I). 

 Howth Peninsula. Cambrian, numerous igneous dykes. Shell- 

 bearing drift. Isthmus of Raised Beach. 

 Greenhills, beyond Crumlin. Esker. 



Glennasmole. Pelstone and basalt outside entrance. Deep shell- 

 bearing Drift within. 

 Ballyedmonduff and Caldbeck Castle. Shell-bearing drift, 1,000 feet 



and 1,200 feet. 

 Blackrock. Nearest visible approach of Limestone to Granite, Granite 



breccia. 

 Dalkey. Extensive granite quarries on hill. Granite roches moutonnees 



near town. 

 Killiney Bay. Junction of Granite and Mica Schist. Shell- 

 bearing drift. 

 Rochestown Hill. Junction of Granite and Mica Schist, laminated 



granite. Rock-scoring. 

 Kiltiernan. Cervus megaceros, C. tarandus. 

 Ballycorus. Disused mine, Smelting Works. 

 Scalp. Junction of Granite and Mica Schist. Physical feature. 

 Lough Bray. Physical feature, Granite jointing, glacial moraines. 

 Bray Head. Section in Cambrian, Oldhamia, &c. Glaciation. 

 Greystones. Section in Cambrian, Oldhamia, dyke, glaciation. 



