Guide books of excursions in Canada1-10 . of this plainin the vicinity of Montreal is about ioo feet(30-5 m.), gradually rising westward until inthe vicinity of Central Ontario Junction, it isalmost 600 (183- m.) feet above the sea. 232-85m. Trenton.—(Grand Trunk Railway station). 375-0 280 ft. (85-3 m.) At Trenton the train isswitched from the Grand Trunk railway to theCentral Ontario railway, now being operated bythe Canadian Northern railway. Trenton.—(Central Ontario Railway station)Alt. 258 ft. (78-6 m.). 257 • 86 m. Canadian Pacific Railway Junction.— 415-0 km. Alt. 598 ft. (182-
Guide books of excursions in Canada1-10 . of this plainin the vicinity of Montreal is about ioo feet(30-5 m.), gradually rising westward until inthe vicinity of Central Ontario Junction, it isalmost 600 (183- m.) feet above the sea. 232-85m. Trenton.—(Grand Trunk Railway station). 375-0 280 ft. (85-3 m.) At Trenton the train isswitched from the Grand Trunk railway to theCentral Ontario railway, now being operated bythe Canadian Northern railway. Trenton.—(Central Ontario Railway station)Alt. 258 ft. (78-6 m.). 257 • 86 m. Canadian Pacific Railway Junction.— 415-0 km. Alt. 598 ft. (182-3 m.) From the junction withthe Canadian Pacific railway, known also asCentral Ontario railway runs main mass of Archean or Pre-Cambrianrock is not reached until Bannockburn stationis approached. The transgression of the Pal-aeozoic sea along this portion of the greatprotaxis began early in Ordovician time. Thismarine invasion was inaugurated by the shallowwater conditions resulting in the deposition of II. Legend ^| Limestone and granular amphiboliUj | Amphibolic E3 c/rf volcanic rocks ) [S Geological Survey, Canada. Route map, Hastings 39 certain conglomerates, grits and sandstone-which mark the base of the Lowville (Birdseye)and Black River formations. Owing to inequalities of the pre-existing landsurface as well as to subsequent unequal erosion,the present line of contact between the Palae-ozoic and the Archean is very intricate. As aconsequence large irregular-shaped masses offlat-lying Palaeozoic strata extend for manymiles beyond the general direction of the lineof junction, while corresponding insets of highlyinclined Archean rocks break up the continuityof the main mass of the Palaeozoic irregularity in the line of division betweenthese two series of formations is further accentu-ated by the occurrence of outliers of flat-lyingPalaeozoic rocks, some of which are now separa-ated by intervals of m
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeology, bookyear1913
