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~ C <br />--a to Cenozoic rocks. The.reason.for assigning a value of 2 to <br />;,;--~ outcrop areas is that they are frequently of low relief. <br />~*TMe influence of geology on landform hydrology and sedimentary deposits <br />'eat but as yet only very general statements can be made about cause <br />--tfect relations, and little or nothing quantitative has been forth- <br />_ySSchneider, 1963; Hely and Olmstead, 1963). <br />-[e (variable 4) <br />Cll~ate is a word that includes a great deal, indeed: Geomorpholo- <br />.s assume that the effects of climate and climate change are reflected <br />t:eslonal and depositional processes and ultimately in the landscape. <br />_tample, morphoclimatic regions have been identified wherein the cli- <br />e determines to a significant extent both the efficiency and type of <br />~`-process as well as the landforss that result (Stoddart, 1459; <br />~~a, 1968), but there is no quantitative description of these supposed <br />`:erences. However, the effects of the greatly different river flow <br />;ices experienced throughout the world (Parde, 1964; Beckinsale, 1969) and <br />e different types of sediments provided by tropical as compared to semi- <br />=d, arctic, and arid rock weathering are detectable. For example, com- <br />'iscn of the hydraulic geometry of perennial streams of hid and subhuai.d <br />'1=cs vi^h that of ephemeral st~eans of semiarid re^ions shows that in <br />=amt to perennial streams devth increases less ravid~y and gradient <br />-teases less rapidly in a downstream direction in epheoeral streams. This <br />~=ably is due to the high water loss in ephemeral stream chancels and to <br />e `-:crease is suspended sediment concentration in a downstream direction <br />z~d et al., 1964, Table 7-3 In addition, obv~ou_ d'fr ,. o <br />_ ~_~ e~~~in the <br />~ro1^QV of s7nves of d "=ere^t asvect north versuc ~7,th for example <br />2-8 <br /> <br />.P~~_= <br />~~'=- <br />:~ <br />I~:1r?~.': F,al <br />:.1st z= <br />=~_ <br />~~~e <br />L~ Li_.Y ti~~C. <br />~ew~~..R <br />~~„ <br />~;'__,=_ <br />:.~Q-~ <br />_.%.- <br />'_=--- <br />:~ ,~ <br />