60 HON IS YM AX GEOLOGY OF ANT1GONISHE COUNTY. 



and petrosilex, and that conjointly they had been subjected to 

 metamorphic action, by which the calcite veins had been formed 

 in the syenite and diorite marbles formed ; and the whole series 

 blended and metamorphosed. 



Passing Boulder Point we enter Malignant Cove, with its sec- 

 tions of drift, and come to the carboniferous conglomerate with 

 intruded diorite. 



This is the beginning of section 1st. 



Proceeding along the shore we pass sand banks and then come to 

 a little brook having diorite at its mouth. This is the beginning of 

 section 2nd. We have then sections of banks, of clay, sand and 

 gravel, until we reach the mouth of McNeil's Brook. Here the 

 upper Arisaig series commences with a small outcrop of C strata, 

 having fossils. These have a northerly dip. This is the begin- 

 ning of section 3rd. Then follows an obscure interval, and an out- 

 crop of rock appears of doubtful character. After these there are 

 outcrops of jaspideous rocks of A, or the lowest member of the 

 strata on the northern side of the syncline of sections 4th, 5th, 6th, 

 and 8th, so that in the obscure interval passed there is concealed 

 a synclinal axis. These jaspideous rocks include 12 feet of soft 

 rocks, ( Dysyntribite) hydrous, silicates of alumina. Parts of 

 these rocks are easily polished and are very beautiful. The rocks 

 were at first regarded as a variety of saponite. These rocks have 

 been metamorphosed by the succeeding trap dyke. 



Of this dyke we have now a magnificent continuing exposure 



extending about along the shore. This trap is compact, 



porphyritic, amygdaloidal and tuffaceous. At Doctor's Brook it is 

 the first rock of Doctor's Brook section, No. 4. The termination 

 of this exposure is the first rock of McDonald's Cove, section No. 5. 



The rocks of our section here are 1st, a jaspideous rock ; 2nd, 

 slates and sandstones of A. Mayhill sandstone, having abundance 

 of fossils; 3rd black laminated shales of B Lower Clinton, having 

 abundance of cone-in-cone and other concretions. The latter are 

 fossiliferous. A few years ago these shales were trenched with the 

 expectation of finding a vein of ore, of which specimens were found 

 on the shore. On the west side of the cove we have again slates 



