. The geography of New Zealand. Historical, physical, political, and commercial . llel to the structural mountain axis andthe mountain ranges run transversely to it. Thiscurious arrangement of the natural featuresevidently demands some special explanation. The whole of the drainage basin of this river hasbeen described as a peneplain of great it had been eroded to the form of a peneplain,the whole of the area was elevated and consequentrivers flowed down its sides. These rivers corrodeddeep channels, and finally the peneplain was dis-sected into a series of main ridges running
. The geography of New Zealand. Historical, physical, political, and commercial . llel to the structural mountain axis andthe mountain ranges run transversely to it. Thiscurious arrangement of the natural featuresevidently demands some special explanation. The whole of the drainage basin of this river hasbeen described as a peneplain of great it had been eroded to the form of a peneplain,the whole of the area was elevated and consequentrivers flowed down its sides. These rivers corrodeddeep channels, and finally the peneplain was dis-sected into a series of main ridges running northand south separating the channels of the consequentstreams. From the relative direction of the moun-tain ridges and of the rivers, it appears that theClutha originally ran between the Rough Ridge,Hawkdun and Ewe Mountains on the one side, and SOUTH ISLAND RIVERS 165 the Umbrella, Obelisk, and Dunstan Mountains onthe other or western side. The Waikaia ran on the western side of the lastnamed and on the eastern side of the Garvie,Carrick, Pisa, MKerrow, and Young Scale : 1 inch = 16 miles. Map showing change of river channels of South Canterljury. Old river valleys marked thus now filled with moraine. The Mataura flowed on the western side of thesemountains and on the west of its channel were theDome Mountains, Hector, Remarkable, Crown andits continuation to Mt. Aspiring, The Oreti River 166 GEOGRAPHY OF NEW ZEALAND followino the present course of the upper Mataura,the south arm of Lake Wakatipu and the Shotoverflowed on the west side of the hist named drained the eastern slopes of the Eyre, andRichardson Mountains. The Aparima River following the present courseof the Upper Oreti, Von, northern arm of LakeWakatipu, and Dart drained the west slopes of theranges just mentioned, and the east slopes of theThomson and Ailsa Mountains. The Mararoa flowed on the west of these. Itdrained the east slopes of the Takitimu andLivingstone Mountains. Lastly the Wai
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Keywords: ., bookauthorgregoryj, bookcentury1900, bookdecade1900, bookyear1905
