Broadhaven #2 | erock

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.

Broadhaven #2

Pembrokeshire, SW Wales

Just south of the classic Den's Door outcrop, the structures here exhibit complex patterns of fold and thrust interaction. Asymmetric, northward-verging folds in interbedded Carboniferous siltstones, shales and coal horizons are cut here byseveral northward-propagating thrusts associated with the Variscan Orogeny.

These structures has been studied in some detail (e.g. Williams and Chapman,1983; Nicol et al., 2002) as it provides an excellent outcrop example to examine the interplay between faulting and folding during deformation.

Lat: 51°47'07.9"N

Long: 5° 6'13.7"W

Virtual outcrop acquired and processed by David Peacock (University of Bergen).