230 



MR. H. H. ARNOLD-BEMEOSE ON THE GEOLOGY OF [May 1899, 



lead-ore was found in the lower and more massive beds. The lowest 

 visible beds of these limestones are faulted against the fourth expo- 

 sure of thick ash. The limestones end abruptlj', and abut against a 

 clay containing several large pieces of limestone. The clay is soon 

 succeeded by bedded ash dipping north-westward on the western 

 bank, and north-eastward on the eastern bank of the cutting. The 



Pig. 1. — Diagrammatic section across the nortliern end of Crake Loiv 

 cutting, shotuing an anticline iyi the limestones above the ash. 



Fig. 2. — Diagrammatic section across the northern end of Highway 

 Close Barn cutting : shales and limestone above the ash. 

 E. W. 



Fig. 3. — Diagrammatic section across the southern end of 

 Highway Close Barn cutting. 



limestones. 



ash and the beds above it must have been thrown down at least 40 

 feet. This ash was blue when freshly exposed, and some silicified 

 beds in it were very hard : like that in the other cuttings, it soon 

 weathers to a rusty red. It is succeeded by tufaceous limestones, 

 with very thin clay- or shale- or tuff-partings. No thick shale-beds 

 were seen. The thin beds immediately above the ash are much 

 contorted, and some of the thin layers of tuff very soon thin out, 



