CNM Bath - Structural Geology Day, Monday 15 December 2003

Geologists have long been fascinated by the rich variety of patterns observed in folded (multi-layer) rock. These can include smooth parallel folds, kink bands, chevron folds and more disordered folding patterns on both small and large length scales. Until recently, all studies of such patterns were observational and qualitative. However, there has been recently considerable progress in applying mathematical and engineering based methods to give a quantitative analysis of the possible patterns. This meeting aims to bring together those mathematicians, engineers and geologists who are interested in the analysis, computation and experimental study of folding (and related) patterns with the aim of stimulating future mathematical research into more advanced geological formations and also of comparing theoretical predictions with those observed in the field. The meeting will have talks on theory, recent experimental work and on practical geology. The emphasis will be a strong interchange of ideas between the different communities.

Topics to be covered:-

Models of deformable rock: experiments and field observations,
Parallel rock folding,
Kink banding: theory,
Kink banding: experiment,
Multi-layer folding patterns and the formation of singularities,
Computational techniques (including level set methods),
Separation (delamination) of rock layers.
Discussion: what can geologists learn from mathematicians/engineers and vice versa?

Programme:-

Coffee
10.30-10.40	Welcome and Introduction
10.40-11.20	Dr. John Cosgrove, Department of Earth Science and Engineering, Imperial College London. "The impact of field observations, analogue modelling and theoretical studies on the understanding of the folding of rocks"
11.20-12.00	Rorie Edmunds, Department of Civil and Environmental Engineering, Imperial College London. "A nonlinear model for parallel folding with friction"
12.00-12.40	Dr. John Mackenzie, Department of Mathematics, University of Strathclyde. "Level set methods for interface problems"
Lunch in 1W3.5
1.30-2.10	Dr. Dave Waltham, Department of Geology, Royal Holloway College, London. "Fault bend folding in Coulomb materials"
2.10-2.50	Dr. Martin Casey, School of Earth Sciences, University of Leeds. "Fold growth and propagation: indications from the field and from numerical modelling"
Tea
3.10-3.50	Dr. Roger Crouch, Department of Civil and Structural Engineering, University of Sheffield. "NAF and kinky: Geomaterial instability and localization under multiaxial stress states"
3.50-4.30	Dr. Ahmer Wadee, Department of Civil and Environmental Engineering, Imperial College London. "Simplified kink banding: Experiments and predictive modelling of localized deformation in layered structures".
Close

Folding Patterns in Structural Geology, Theory and Experiments