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Factors affecting the increase in weathering-rind thickness, i.e. weathering rates, were investigated using andesite gravel in fluvial terrace deposits with a known emergence time. The time between the age of each terrace formation (20, 130, 290 and 660ka) and the present was assumed to be the weathering period. Three zones were classified from measurements of the Vickers hardness number (VHN) across...
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