. The geography of New Zealand. Historical, physical, political, and commercial . Cone of shingle deposited by a small stream in the flat riverbed of the Rangitata. The younger rivers must evidently have swift,turbulent streams and steep-sided gorges, whilethose of mature age flow steadily in open smilingvalleys productive of the fruits of fertility. But as they grow old, streams may interfere withone another. Imagine a gently sloping sea bottomelevated above the ocean waters. The rain thatfalls on it flows down its steepest slope towards thesea. Several roughly parallel streams are formed 128
. The geography of New Zealand. Historical, physical, political, and commercial . Cone of shingle deposited by a small stream in the flat riverbed of the Rangitata. The younger rivers must evidently have swift,turbulent streams and steep-sided gorges, whilethose of mature age flow steadily in open smilingvalleys productive of the fruits of fertility. But as they grow old, streams may interfere withone another. Imagine a gently sloping sea bottomelevated above the ocean waters. The rain thatfalls on it flows down its steepest slope towards thesea. Several roughly parallel streams are formed 128 GEOGRAPHY OF NEW ZEALAND whose course is a direct consequence of the slope ofthe ground. These are consequent streams. Sup-pose that one of these has its source in an area ofheavy rainfall and traverses rocks particularly Consequent streams on Mount Egmont. They everj-whereflow outward from the recently formed cone. Its valley will be deeply cut and its tributaries willhave a steep slope and work their way backwardsfrom the main stream rapidly, especially if theirchannels follow a stratum of soft rock. They mayeven cut their way into the valley of the neighbour-ing consequent stream whose waters will flow down RIVERS OF NEW ZEALAND 129
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Keywords: ., bookauthorgregoryj, bookcentury1900, bookdecade1900, bookyear1905
