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- W2164899173 abstract "The Bergell intrusion (European Alps) was one of the first locations where thermochronometry was used to resolve changes in erosion rate, yet, relating these changes to variations in climate or in local tectonics remains challenging. One approach that enables changes in erosion rate to be related to changes in climate or rock uplift rate is to utilize landscape evolution models, as topographic response to these forcing parameters is unique. Furthermore, low temperature thermochronometric systems have the potential to resolve topography through time and thus topographic response. We present new (U-Th)/He data for samples collected across 2 km of relief from the Bergell. The ages range from ∼2 to ∼16 Ma and define an age elevation with an apparent exhumation rate of 0.1 km/Myr. In order to infer erosion rates, we use a thermokinematic model to solve the heat equation in the crust, track material points through time and predict thermochronometric data. Paleo-topography and erosion rate are parameterized using the stream power model. We find that rock uplift rates were 0.4 km/Myr from ∼25 to ∼20 Ma and subsequently decreased to 0.05 km/Myr. This results in a gradual decrease in erosion rate from rates of 0.4 to 0.1 km/Myr. A recent increase in rock uplift rate at ∼4 Ma to ∼0.6 km/Myr is required to explain the youngest ages and high topographic relief." @default.
- W2164899173 created "2016-06-24" @default.
- W2164899173 creator A5011869263 @default.
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- W2164899173 creator A5066511237 @default.
- W2164899173 creator A5066630823 @default.
- W2164899173 creator A5086371435 @default.
- W2164899173 date "2014-04-01" @default.
- W2164899173 modified "2023-10-12" @default.
- W2164899173 title "Rock uplift and erosion rate history of the Bergell intrusion from the inversion of low temperature thermochronometric data" @default.
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