NOTES ON OEOLOGV AND HOTANV OF DKJHV NECK — lUir.EV. 74 



Plato V, acc()tiii)iiiiyin^' this jjiipcr, roprosonts the husaltic 

 vstructuro a.s hcon .it Israel Cdvo, near the .southern end of Petite 

 Passaf^e. 



Some tine basaltic sceneiy, of which a skfdcli is ^qven in 

 "Acadian (Juolo^ry/' is also to be seen on Briar Island, near 

 W(;stj>ort, but iit tfonoral the land here is lovvei' and the features 

 less bold than about the Petitt; Passage. 



That so ])i'oininent a rid^'e as that of Hi^by Neck should 

 have been greatly affected by the conditions incidental to the 

 glacial perioil, would natni'ally be expected. These ai*e, however, 

 shown rather in the evidences of enormous denudation than in 

 the ])roduction of new deposits. Portions of tlui I'idn^e are, it is 

 true, somewhat deeply buried in boulder clay ; and boulders 

 (inoludinix in a few instances (^ranitic antl fcisitic blocks which 

 must have come fi'om the otluu' side of the Bay of Fundy) are 

 scattered overall parts of its surface; but the occurrence in great 

 pi-ofusion of the chaructei'istic rocks of the ])eninsula along the 

 southern side of 8t. Mary's Bay, and, though less abundantly, 

 over Yarmouth and Shelburne Counties, even to the Atlantic 

 seaboard, gives forcible illustration of the extent to wdnch the 

 substance of the peninsula has been removed. 



The fact also that the transverse valleys of Sandy Cove, 

 Petite Passage and Grand Pas.sage, as well as others less con- 

 spicuous, are oblique to the peninsula and almost exactly parallel 

 to each otlior, while their course corresponds with that of the 

 glacial striation of the district, goes far to favor the view that 

 they owe their origin, partly if not whollj', as has been suggested 

 in the case of Digby Gut, to the excavating action of glacial 

 streams'. The occu'rence of striations on the surface of the 

 basaltic columns in Israel C;)ve, and within a few feet of the 

 surface of the water, gives further probability to this view. 



MINERALS. 



Tb.e minerals of Digby Neck are the same as those found in 

 other parts of the North Mountain Range, but are less abundant 

 and less vai'ied than in the section of the latter which lies east 

 of Digby Gut. 



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