DAWSON ON THE GEOLOGY 01' NOVA SCOTIA. 31 



displays hard brownish-red quartzose and jaspery rocks, with 

 thick beds of hard grey shales, red conglomerates, and coarse pur- 

 plish grits. Associated with these, are beds of amygdaloid, which 

 are evidently interstratified with the accompanying rocks, and are 

 probably, like those of M'Cara's brook, of contemporaneous origin. 

 The whole of these beds are vertical, and are, without doubt, 

 lower carboniferous rocks (perhaps a little lower in the series 

 than those last seen at M'Cara's brook), but in a much altered 

 condition. Beyond Malignant Cove, syenitic greenstone is seen 

 on the shore, and, is said to appear in different places as far as 

 Cape St. George. Eastward and southward of Malignant Cove, 

 the hills, in many places, show masses of compact felspar and 

 other igneous rocks, accompanied by altered and disturbed grits. 

 After passing this disturbed region, we enter on the Gypsiferous 

 rocks of the northern side of Antigonish harbour, having a ge- 

 neral dip to the southward. Of these rocks, I examined two in- 

 teresting sections. 



Antigonish. 



Section IV. 



Right's River, Antigonish. 



N. 



li ~^ — ^^ 



a 



d. Gypsiferous beds — gypsum, limestone, and sandstone. 



c. Limestone. 



6. Red conglomerate and coarse red sandstone, dark sandstone and shale. 



a. Dark and grey sandstones and shales, reddish sandstone : — plants. 



The first of these sections is that represented above, and is 

 seen extending about five miles. Near the mouth of this river, 

 at the head of Antigonish harbour, is a thick bed of white 

 gypsum, dij>ping to the south-west. Succeeding this, in de- 

 scending order, after a small interval (which appears to have 

 been occupied by sandstones, now nearly removed by denuda- 

 tion), is a bed of dark-coloured limestone, in which, at different 

 points where it appears, I found Productus Martini with other 

 shells also occurring on the East River ; and Productus Lyelli, 

 a shell not yet met with in the East River limestones, but very 

 characteristic of the gypsiferous formation in other parts of the 

 province. Below this limestone there is another break, also show- 

 ing traces of sandstones and a bed of gypsum, and then a thick bed 

 of dar*k limestone, partly laminated and partly brecciated without 

 fossils, and containing in its fissures thin plates of copper ore. 

 Beneath this limestone is a great thickness of reddish conglomerate, 

 composed of pebbles of igneous and metamorphic rocks, and vary- 

 ing in texture from a very coarse conglomerate to a coarse-grained 

 sandstone . In one place it contains a few beds of dark sandstones 

 and shales. These are succeeded by red, grey, and dark sandstone 

 and dark shales, in a disturbed condition, but probably underlying 



