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
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.
Normal Fault, Kilve
Somerset, UK
Sea cliffs (up to ~ 10 m high) and wave-cut platform on the east of Kilve Beach, ~ 17 km WNW of Bridgwater. Gently-dipping Liassic (top Triassic and Lower Jurassic) limestones and shales are cut by a normal fault with a down to the north displacement of ~ 20 m.
See Schöpfer, M.P.J., Childs, C., Walsh, J.J., Manzocchi, T., Koyi, H.A., 2007. Geometrical analysis of the refraction and segmentation of normal faults in periodically layered sequences. Journal of Structural Geology 29, 318-335.
Lat: 51°11'35.4767"N
Long: 3°13'31.3152"W
Virtual Outcrop by David Peacock at University of Bergen. Contact David (david.peacock@uib.no) for georectified data, alternate formats or UAV images of outcrop.