418 NOTES ON RECENT .SEDIMENTARY FOKMATIONS — ELLS. 



a small cove known locally as Ira Woodworth Ba}', and from 

 some notes, taken at this place dnrino- a hurried trip along the 

 shore in 1876, the following points of interest may he stated for 

 the purpose of stimulating further investigation on the part of 

 those students more particularly interested in the study of the 

 geology of the district. 



At this Bay the trap rock is very amygda'oidal, and a small 

 cove about forty rods across is hollowed out of the shore line. 

 The cliff here is <|uite low, the erosion having been very con- 

 siderable, and the amygdaloid is overlaid by a green sandy 

 looking shale about four feet in thickness, having a dip to the 

 south east of about ten degrees. This is in turn overlaid by a 

 greyish sandy calcareous rock which is interstratified with 

 beds of nearly pure limestone. Certain bands of the series hold 

 concretionary masses, often of large size, of jasper and chert, 

 which frequently contain beautiful crystals of amethyst. The 

 thickness of the calcareous beds exposed at this place is about 

 ten feet, and the whole is covered by soil. The purer calcareous 

 layers have been locally burned for lime and the stone is said to 

 have yielded an article of very fair quality. 



Admitting then the Triassic age of the soft red sandstone and 

 the more I'ecent age of the trappean rocks wdiich have broken 

 through these, it would follow from the superposition of the 

 beds just described upon the latter, that these limestones and 

 shales must be of still more recent date. No fossils have how- 

 ever yet been found at this locality, probably through lack of 

 search in this direction. It may be of interest to note in 

 connection with this that greyish calcareous sandstone and 

 impure limestone have been recently noted by Prof. Bailey in 

 association with the trappean rocks of Digby neck. In these, 

 impressions of plant remains were clearly visible though the 

 species are as yet undetermined. Should these rocks prove on 

 .examination to be similar to those of Ira Woodworth Bay, the 

 formation would appear to have been at one time quite widely 

 distributed. 



The occurrence of these recent rocks is of very considerable 

 interest, geologically speaking, and from their proximity to the 



