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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Cited articles

Abdelmalak, M. M., Mourgues, R., Galland, O., and Bureau, D.: Fracture mode analysis and related surface deformation during dyke intrusion: Results from 2D experimental modelling, Earth Plane. Sc. Lett., 359/360, 93–105, 2012.
Abe, S., van Gent, H. W., and Urai, J. L.: DEM Simulation of Normal Faults in cohesive Materials, Tectonophysics, 512, 12–21, 2011.
Abràmoff, M. D., Magalhães, P. J., and Ram, S. J.: Image processing with image, J. Biophotonics Int., 11, 36–41, 2004.
Acocella, V., Korme, T., and Salvini, F.: Formation of normal faults along the axial zone of the Ethiopian Rift, J. Struct. Geol., 25, 503–513, 2003.
Adam, J., Urai, J.L., Wieneke, B., Oncken, O., Pfeiffer, K., Kukowski, N., Lohrmann, J., Hoth, S., van der Zee, W., and Schmatz, J.: Shear localisation and strain distribution during tectonic faulting – new insights from granular-flow experiments and high-resolution optical image correlation techniques, J. Struct. Geol., 27, 283–301, 2005.
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.