Journal
SCIENCE
Volume 341, Issue 6148, Pages 868-871Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1241791
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Funding
- National Environmental Research Council [NE/G524128/1]
- Carnegie Trust for the Universities of Scotland
- [NE/H001174/1]
- NERC [bgs05002, NE/H001174/1] Funding Source: UKRI
- Natural Environment Research Council [bgs05002, NE/H001174/1] Funding Source: researchfish
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Earth's surface archives the combined history of tectonics and erosion, which tend to roughen landscapes, and sediment transport and deposition, which smooth them. We analyzed hillslope morphology in the tectonically active Dragon's Back Pressure Ridge in California, United States, to assess whether tectonic uplift history can be reconstructed using measurable attributes of hillslope features within landscapes. Hilltop curvature and hillslope relief mirror measured rates of vertical displacement caused by tectonic forcing, and their relationships are consistent with those expected when idealizing hillslope transport as a nonlinear diffusion process. Hilltop curvature lags behind relief in its response to changing erosion rates, allowing growing landscapes to be distinguished from decaying landscapes. Numerical modeling demonstrates that hillslope morphology may be used to infer changes in tectonic rates.
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