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1 April 2013 Large scale structural control on regional coastline orientations: example from South-eastern France
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Abstract

Giuliano, J., Godard, V., Dewez, T., Lebourg, T., Emmanuel Tric. and Marçot, N., 2013. Structural control on regional coastline orientations: example from South-eastern France

The morphology of rocky coastlines is the expression of the interaction between external forcings and the intrinsic rock mass properties, leading to a specific erosional response. Among these rock mass properties the contribution of structural discontinuities is still poorly understood. Nevertheless, recent studies suggest that geological structures may have a first order influence in controlling the coast morphology. Understanding how the structural pattern interacts with erosion processes is fundamental to assess the evolution of these environments. We propose a regional comparison between the orientation of rocky shorelines and faults segments in six different litho-structural units in the Provence and Côte d'Azur area (southern France). Our analysis reveals that in many of these sectors the dominant fault trend (E-W) is also present in the distribution of coastlines orientations. In some particular areas, a complex geological inheritance (Maures) blurs this apparent relationship between faults and coastal morphology. We conclude that, in our study area, the level of complexity of the structural setting seems to significantly control the nature and shape of the coastline.

Jérémy Giuliano, Vincent Godard, Thomas Lebourg, Thomas Dewez, Emmanuel Tric, and Nathalie Marçot "Large scale structural control on regional coastline orientations: example from South-eastern France," Journal of Coastal Research 65(sp2), 1687-1691, (1 April 2013). https://doi.org/10.2112/SI65-285.1
Received: 7 December 2012; Accepted: 6 March 2013; Published: 1 April 2013
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