122 



KUometres °^ basic igneous rocks. The Bonaventure meas- 

 ures are absent from the shore but form Heron 

 island which lies a few miles east of Charlo. 

 Approaching Nash creek, the low, red cliffs of 

 the eastern end of Heron island are visible. 



22-o m. Nash Creek Station — A mile beyond Nash 



35-4 km. Creek, the Bonaventure strata outcrop on the 



shore and extend eastward along it for 15 miles 



(24 km.). 



25-0 m. Jacquet River Station — Alt. 55 ft. (16 -8m.). 



41 • 1 km. A long narrow band of red 'felsites' (rhyolites?) 

 extends inland from Jacquet river. The igneous 

 rocks have been supposed to be of Pre-Cambrian 

 age. Possibly the felsites are of Silurian or 

 Devonian age as in the case of similar bodies 

 occurring elsewhere in the great Siluro- 

 Devonian area of northwestern New Brunswick. 



To the east of Belledune river, 9 miles (14-5 

 km.) east of Jacquet river, the railway tra- 

 verses a zone of black slates of late Silurian 

 (Guelph?) age. Along the coast are outcrops 

 of fossiliferous red, grey and black limestones 

 with shales of various colours, and sandstones 

 and conglomerates. These measures range 

 in age from Clinton to Niagara and, possibly, 

 Guelph. They are underlain by red shales, 

 sandstones and conglomerates with a thickness 

 as great as 1,000 feet (300 m.) or more. The 

 total thickness of the Silurian beds is large 

 but the strata are so closely folded and so 

 much faulted that no reliable estimate of total 

 thickness may be made. 



34-4 m. Belledune Station — Alt. 84 ft. (25-6 m.). 



55-4 km. After passing Belledune station, the railway 

 traverses a circumscribed area of igneous and 

 altered sedimentary strata. Igneous rocks are 

 exposed in a number of rock cuts and two long 

 cuttings occur in them on both sides of Elmtree 

 river, 6| miles (10-5 km.) beyond Belledune. 

 The igneous rocks include granite and diabase. 

 The different varieties of igneous rock and the 

 sedimentary strata which are possibly in part 



