12 D GEOLOGICAL SURVEY OF CANADA. 



Little Dipper Harbour they are seen to dip oft' from the northern 

 flank of hard crystalline greenish and purple porpbyritie felsites of 

 pre-Cambrian age, which occupy the extremity of the western side of 

 the harbour, and which extend thence along the shore to the northern 

 side of Dipper Harbour, where the Devonian rocks again touch the 

 shore. These Devonian rocks are seen to occupy a shallow synclinal, 

 their northern edge resting upon the pre-Cambrian (Laurentian) ridge 

 that extends from St. John to Lepreau, and dipping southward at a 

 low angle. The surface breadth of this belt is about one mile. This 

 southern or coast area terminates just at the telegraph road to Point 

 Lepreau. 



The northern or larger area has a maximum breadth of two and a 

 half miles. It rests unconformably upon the Laurentian gneisses both 

 on the north and south. At least two anticlinals, with several faults, 

 are observable. Both the Dadoxylon sandstone and Cordaite slates are 

 represented in this belt, the rocks being principally dark purple and 

 grey sandstone and conglomerate, with bands of dark blackish grey 

 slate and thin bands of purple, red and bluish grey limestone. The 

 grey beds, which are often of a glassy quartzose character, form the 

 base of the series in this direction, and rejjresent the Dadoxylon 

 sandstone of the Mispec section. 

 Continuation On the Telegraph road, from the St. Andrews road to Dipper Har- 

 toward Lepreau bour, they are seen to form a sharp synclinal with a dip of S. 10° E. < 

 10° along the northern margin about Musquash, which is reversed to 

 N. 20° W. < 70° on the road to Dipper Harbour. These are overlaid 

 by the purple sandstones and conglomerates, with shales of the Cordaite 

 division, the contact being probably marked by a fault. These purple 

 beds also form a synclinal, with their southern margin resting upon 

 the syenitic and porphyritic felsites of the ridge north of Chance Har- 

 bour, over which they fold and again reappear on the slope of the hill 

 overlooking the harbour, the crest of the ridge having been removed by 

 denudation. This belt may be traced westward without interruption 

 to the waters of Lepreau Harbour, where it has an exposed breadth of 

 about one mile, extending from the south side of Belas Basin to the 

 north side of Boyle's Beach, on the north side of Eagged Head, .At 

 this place, as well as on the Little Lepreau, the broken character and 

 faulted structure of these beds is well shewn. At the point where the 

 Tepreau. road from Lepreau village to Hanson's coal mine crosses the Little 

 Lepreau Eiver, the grey beds (quartzites) which form the base of the 

 formation in this area are seen to dip S. 15° E. < 90°, resting against 

 the Laurentian syenitic gneiss. Going south, the dip changes to 

 S. 10° E. < 15°, and at Little Lepreau Basin the contact of the grey 

 and purple beds is observed with the same dip — S, 10° E. < 75° 



