Climatically versus tectonically forced erosion in the Alps: Thermochronometric constraints from the Adamello Complex, Southern Alps, Italy

Reverman, Rebecca; Fellin, Maria Giuditta; Herman, Frédéric; Willett, Sean D.; Fitoussi, Caroline

doi:10.1016/j.epsl.2012.04.051

Cited by 22 publications

(33 citation statements)

References 80 publications

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“…Efficient glacial erosion has also been inferred by measuring a drop in the water level in Alpine caves [ Haeuselmann et al ., ] and rapid glacial incision [ Glotzbach et al ., ; Valla et al ., ]. This signal is seen only in the Western Alps and has not been detected across the Eastern Alps [ Reverman et al ., ]. The fingerprint of glacial incision would be an increase in erosion rate at approximately 1 Ma across the Bergell and an increase in topographic relief.…”

Section: Geology and Exhumation Of The Bergellmentioning

confidence: 99%

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Rock uplift and erosion rate history of the Bergell intrusion from the inversion of low temperature thermochronometric data

Fox

Reverman

Herman

et al. 2014

Geochem. Geophys. Geosyst.

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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.

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Section: Geology and Exhumation Of The Bergellmentioning

confidence: 99%

“…The Alpine internal units are separated from the Southern Alps by the Periadriatic Line, or the Insubric Line south of the Bergell, after Reverman et al . []. The red box shows the location of Figure b.…”

Section: Introductionmentioning

confidence: 99%

Rock uplift and erosion rate history of the Bergell intrusion from the inversion of low temperature thermochronometric data

Fox

Reverman

Herman

et al. 2014

Geochem. Geophys. Geosyst.

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“…30Ma at depths of 9-11km based on: i) the associated stable 133 determined using thermochronology (e.g. Reverman et al 2012). …”

mentioning

confidence: 99%

A geological explanation for intraplate earthquake clustering complexity: The zeolite-bearing fault/fracture networks in the Adamello Massif (Southern Italian Alps)

Dempsey

Holdsworth

Imber

et al. 2014

Journal of Structural Geology

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Publisher's copyright statement: NOTICE: this is the author's version of a work that was accepted for publication in Journal of structural geology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reected in this document. Changes may have been made to this work since it was submitted for publication. A denitive version was subsequently published in Journal of structural geology, 66, 2014, 10.1016/j.jsg.2014.04.009 Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

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“…The project found little evidence for accelerated exhumation in the last few million years (Glotzbach et al, 2011;Reverman et al, 2012) (see Fig. 11), although there was evidence for an increase in relief due to Quaternary glacial valley carving (Valla et al, 2011).…”

Section: The Esf Eurocores Topo-europe Programmentioning

confidence: 93%

TOPO-EUROPE: Understanding of the coupling between the deep Earth and continental topography

Cloetingh

Willett

2013

Tectonophysics

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Climatically versus tectonically forced erosion in the Alps: Thermochronometric constraints from the Adamello Complex, Southern Alps, Italy

Cited by 22 publications

References 80 publications

Rock uplift and erosion rate history of the Bergell intrusion from the inversion of low temperature thermochronometric data

Rock uplift and erosion rate history of the Bergell intrusion from the inversion of low temperature thermochronometric data

A geological explanation for intraplate earthquake clustering complexity: The zeolite-bearing fault/fracture networks in the Adamello Massif (Southern Italian Alps)

TOPO-EUROPE: Understanding of the coupling between the deep Earth and continental topography

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