Cape Liptrap

Folding at Broadhaven

Pembrokeshire, SW Wales

One of The Geological Society's 100 Great Geosites. Asymmetric folds in interbedded Carboniferous siltstones, shales and coal horizons are cut here by a number of northward-propagating thrusts. This classic structure has been studied in some detail (e.g. Williams and Chapman,1983) as it provides an excellent outcrop example to examine the interplay between faulting and folding during deformation.

Trevayne

Pembrokeshire, SW Wales

Large-scale harmonic fold within Carboniferous siltstones, shales and coal horizons. Close inspection of the fold core reveals several low offset thrust segments which probably formed to accommodate the relatively tight interlimb angle here. The cross-section below shows the transition in structural style between this location, Monkstone Point and Saundersfoot.

Trevayne

Pembrokeshire, SW Wales

Cape Liptrap Folds

Victoria, Australia

Finely laminated siltsones, shales and turbiditic sandstone units of Silurian-Devonian age. These rocks were folded during the Tabberabberan Orogeny (Devonian), with compression in a dominantly E-W direction.

This virtual outcrop was generated by Stefan Vollgger at Monash University, who used the reconstruction to assess the link between folding and fracturing in this deformed multilayer:

Vollgger, S.A. and Cruden, A.R., 2016. Mapping folds and fractures in basement and cover rocks using UAV photogrammetry, Cape Liptrap and Cape Paterson, Victoria, Australia. Journal of Structural Geology, 85, pp.168-187.