Dilatant normal faulting in jointed cohesive rocks: a physical model study

Kettermann, Michael; von Hagke, Christoph; van Gent, Heijn W.; Grützner, Christoph; Urai, Janos L.

doi:https://doi.org/10.5194/se-7-843-2016

Articles | Volume 7, issue 3

https://doi.org/10.5194/se-7-843-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/se-7-843-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 7, issue 3

Research article

|

27 May 2016

Research article |

| 27 May 2016

Dilatant normal faulting in jointed cohesive rocks: a physical model study

Michael Kettermann, Christoph von Hagke, Heijn W. van Gent, Christoph Grützner, and Janos L. Urai

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Final revised paper (published on 27 May 2016)
Preprint (discussion started on 14 Jan 2016)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'normal faulting and pre-existing joints', Andrea Billi, 21 Jan 2016
- AC1: 'Answer to the review of Andrea Billi', Michael Kettermann, 22 Mar 2016
RC2: 'Review of Manuscript entitled: "Dilatant normal faulting in jointed cohesive rocks: a physical model study", by M. Kettermann, C. von Hagke, H. W. van Gent, C. Grützner, and J. L. Urai', Olivier Galland, 22 Feb 2016
- AC2: 'Answer to the review of Olivier Galland', Michael Kettermann, 22 Mar 2016

Short summary

We present an analogue modeling study on the interaction of pre-existing joints and normal faults using cohesive powder. We vary the angle between joints and a rigid basement fault and analyze interpreted map-view photographs at maximum displacement for various parameters and compare to nature. Results show a clear effect of increasing angle between joints and faults on fault geometry, fracture density and connectivity. These information can help interpreting fractured layers in the subsurface.