Field measurements of incision rates following bedrock exposure : Implications for process controls on the long profi les of valleys cut by rivers and debris fl ows

@inproceedings{StockFieldMO,
  title={Field measurements of incision rates following bedrock exposure : Implications for process controls on the long profi les of valleys cut by rivers and debris fl ows},
  author={Jonathan D. Stock and David R. Montgomery and Brian D Collins and William Eric Dietrich and Leonard S. Sklar}
}
Until recently, published rates of incision of bedrock valleys came from indirect dating of incised surfaces. A small but growing literature based on direct measurement reports short-term bedrock lowering at geologically unsustainable rates. We report observations of bedrock lowering from erosion pins monitored over 1–7 yr in 10 valleys that cut indurated volcanic and sedimentary rocks in Washington, Oregon, California, and Tai-wan. Most of these channels have historically been stripped of… CONTINUE READING
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