Journal metrics

Journal metrics

  • IF value: 4.165 IF 4.165
  • IF 5-year value: 4.075 IF 5-year 4.075
  • CiteScore value: 4.28 CiteScore 4.28
  • SNIP value: 1.501 SNIP 1.501
  • SJR value: 1.060 SJR 1.060
  • IPP value: 4.21 IPP 4.21
  • h5-index value: 29 h5-index 29
  • Scimago H index value: 27 Scimago H index 27
Discussion papers | Copyright
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 17 Sep 2018

Research article | 17 Sep 2018

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Solid Earth (SE).

The influence of detachment strength on the evolving deformational energy budget of physical accretionary prisms

Jessica McBeck1,a, Michele Cooke1, Pauline Souloumiac2, Bertrand Maillot2, and Baptiste Mary2 Jessica McBeck et al.
  • 1Department of Geosciences, University of Massachusetts Amherst, MA, USA
  • 2Département Géosciences et Environnement, Université de Cergy-Pontoise, Cergy-Pontoise, France
  • anow at: Physics of Geological Processes, The Njord Centre, Department of Geosciences, University of Oslo, Norway

Abstract. Tracking the evolution of the deformational energy budget within accretionary systems provides insight into the driving mechanisms that control fault development. To quantify the impact of these mechanisms on overall system efficiency, we estimate energy budget components as the first thrust fault pair develops in dry sand accretion experiments. We track energy budget components in experiments that include and exclude a basal layer of glass beads in order to investigate the influence of detachment strength on work partitioning. We use the measurements of normal force exerted on the backwall to estimate external work, and measurements of strain observed on the sides of the sandpacks to estimate the internal work, frictional work and work against gravity done within increments of each experiment. Thrust fault development reduces the incremental external work and incremental internal work, and increases the incremental frictional work and incremental gravitational work. The faults that develop within higher friction detachment experiments produce greater frictional work than the faults in experiments with glass bead detachments because the slip distribution along the detachments remain the same while the effective friction coefficient of the detachment differs between the experiments. The imbalance of the cumulative work budget suggests that additional deformational processes that are not fully captured in our measurements of the energy budget, such as acoustic energy, consume work within the deforming wedge.

Jessica McBeck et al.
Interactive discussion
Status: final response (author comments only)
Status: final response (author comments only)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Login for Authors/Topical Editors] [Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement
Jessica McBeck et al.
Jessica McBeck et al.
Total article views: 370 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
323 43 4 370 8 1 0
  • HTML: 323
  • PDF: 43
  • XML: 4
  • Total: 370
  • Supplement: 8
  • BibTeX: 1
  • EndNote: 0
Views and downloads (calculated since 17 Sep 2018)
Cumulative views and downloads (calculated since 17 Sep 2018)
Viewed (geographical distribution)
Total article views: 370 (including HTML, PDF, and XML) Thereof 365 with geography defined and 5 with unknown origin.
Country # Views %
  • 1
No saved metrics found.
Latest update: 18 Oct 2018
Publications Copernicus
Short summary
In order to assess the influence of deformational processes within accretionary prisms, we track the evolution of the energy budget. We track the consumption of energy stored in internal deformation of the host rock, energy expended in frictional slip, energy used in uplift against gravity, and the total energy input. We find that the energy used in internal deformation is < 1 % of the total, and that the energy expended in frictional slip is the largest portion of the budget.
In order to assess the influence of deformational processes within accretionary prisms, we track...