Skip to Main Content
Book Chapter

Multiscale fracture analysis along the French chalk coastline for investigating erosion by cliff collapse

By
A. Genter
A. Genter
1BRGM, CDG/ENE, 3 avenue Claude Guillemin, BP 6009, 45060 Orléans cedex 2, France
Search for other works by this author on:
A. Duperret
A. Duperret
2Laboratoire de Mécanique, Physique et Géosciences, Université du Havre, 25 rue Philippe Lebon, BP 540, 76 058 Le Havre cedex, France
Search for other works by this author on:
A. Martinez
A. Martinez
2Laboratoire de Mécanique, Physique et Géosciences, Université du Havre, 25 rue Philippe Lebon, BP 540, 76 058 Le Havre cedex, France
Search for other works by this author on:
R. N. Mortimore
R. N. Mortimore
3Applied Geology Research Unit, University of Brighton, Moulsecoomb, Brighton, BN2 4GJ, UK
Search for other works by this author on:
J-L. Vila
J-L. Vila
1BRGM, CDG/ENE, 3 avenue Claude Guillemin, BP 6009, 45060 Orléans cedex 2, France
Search for other works by this author on:
Published:
January 01, 2004

Abstract

Coastal cliffs of Upper Normandy and Picardy are eroded by cliff collapses of various sizes. This paper presents a multi-scale analysis of the pre-existing fractures embedded within the Cretaceous chalk. About 20 representative sites equally spaced along the 120km long coastal section were analysed and compared to a continuous structural analysis of the coast derived from aerial photographs taken in 1986. Ancient collapses interpreted on the aerial photos were compared to the pre-existing fracture content. Regional faults, pre-1986 collapse location and fracture density are spatially correlated. However, recent collapses observed on the field between 1998 and 2001 did not systematically correlate to the pre-existing fracture occurrence and therefore, there is no clear link between recent collapse and the regional faults.

You do not currently have access to this article.

Figures & Tables

Contents

Geological Society, London, Engineering Geology Special Publications

Coastal Chalk Cliff Instability

R. N. Mortimore
R. N. Mortimore
University of Brighton, UK
Search for other works by this author on:
A. Duperret
A. Duperret
Université du Havre, France
Search for other works by this author on:
Geological Society of London
Volume
20
ISBN electronic:
9781862393820
Publication date:
January 01, 2004

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal