Articles | Volume 8, issue 6
Research article
22 Nov 2017
Research article |  | 22 Nov 2017

Extension parallel to the rift zone during segmented fault growth: application to the evolution of the NE Atlantic

Alodie Bubeck, Richard J. Walker, Jonathan Imber, Robert E. Holdsworth, Christopher J. MacLeod, and David A. Holwell

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Cited articles

Ackermann, R. V. and Schlische, R. W.: Anticlustering of small normal faults around larger faults, Geology, 25, 1127–1130, 1997.
Ackermann, R. V., Schlische, R. W., and Withjack, M. O.: The geometric and statistical evolution of normal fault systems: an experimental study of the effects of mechanical layer thickness on scaling laws, J. Struct. Geol., 23, 1803–1819, 2001.
Acocella, V., Morvillo, P., and Funiciello, R.: What controls relay ramps and transfer faults within rift zones? Insights from analogue models, J. Struct. Geol., 27, 397–408,, 2005.
Carbotte, S. M. and Macdonald, K. C.: Comparison of seafloor tectonic fabric at intermediate, fast, and super fast spreading ridges: Influence of spreading rate, plate motions, and ridge segmentation on fault patterns, J. Geophys. Res.-Solid Earth, 99, 13609–13631,, 1994.
Cartwright, J., Mansfield, C. S., and Trudgill, B.: The growth of normal faults by segment linkage, in: Modern Developments in Structural Interpretation, Validation and Modelling, edited by: Buchanan, P. G. and Nieuland, D. A., Vol. Geological Society Special Publication No. 99, London, UK, The Geological Society, 1996.
Short summary
We present a field-based study of relay zone development using examples from the Koa’e fault system (Hawai’i) and the Krafla fissure swarm (Iceland). We show the evolution of second-order deformation within these zones and illustrate the effects of horizontal (heave) displacement gradients in evolving continental rift systems. Data are consistent with faults and intrusions from the Faroe Islands and E Greenland. We propose a new model for the evolution of segmented basins along the NE Atlantic.