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- W2773058145 abstract "Based on 10Be denudation rates previously found (3.6 m/Ma, [2]; 3.44 m/Ma, [1]), the landscape across the CoH is considered old and eroding slowly. High erosion rates similar to our results (5.13 - 15.02 m/Ma) for chert bedrock are ascribed to fast river incision or a recent partial collapse event [1,2]. In contrast, we think our high outcrop erosion rates reflect true denudation and low apparent values from soil samples indicate long retention of quartz on surface, while dolomite is largely removed in solution. The quartz then experiences periods of burial and reworking in caves and river terraces, resulting in low 26Al/10Be ratios." @default.
- W2773058145 created "2017-12-22" @default.
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- W2773058145 date "2017-01-01" @default.
- W2773058145 modified "2023-09-23" @default.
- W2773058145 title "COSMOGENIC 10BE AND 26AL STUDIES OF THE RISING STAR SITE, CRADLE OF HUMANKIND, SOUTH AFRICA: MYSTERY OF THE TRUE DENUDATION RATES" @default.
- W2773058145 doi "https://doi.org/10.1130/abs/2017am-297563" @default.
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