Northcott Mouth anticline 1
Maer Cliff incompetent deformation
Maer Cliff syncline 2
Maer Cliff syncline 1
Plunging chevron folds at Northcott Mouth
Smooth Rock convergence 2
Maer Down cliff convergence 2
Smooth Rock convergence 1
Maer Down cliff convergence 1
Vertical bedding slab at Northcott Mouth, Cornwall…
Load structures on turbidite sandstones, Crooklets…
Anticline, Crooklets, near Bude, Cornwall
Syncline, Wrangle Point, near Bude, Cornwall
Load structures on turbidite sandstones, Crooklets…
Wrangle Point chevron folds
Syncline axis, Wrangle Point, near Bude, Cornwall.
Plunging chevron folds (detail)
Plunging chevron folds at Wrangle Point, Crooklets…
Syncline axis (detail), Wrangle Point, near Bude,…
Syncline at Wrangle Point, Crooklets, near Bude.
Budleigh convergence
Budleigh Salterton Pebble Beds - faulted
Budleigh Salterton Pebble Beds
Cliffs of composed of Otter Sandstone, Budleigh Sa…
Green wall 3
Green wall 2
Green wall 1
Handa Island - Geodh' a' Bhrisidh
Handa Island - Geodh' a' Bhrisidh (2)
Handa Island - Great Stack
Handa Island - Great Stack (2)
Handa Island - Great Stack geodh
Lodge Valley bedding plane descent 1
Lodge Valley bedding plane descent 2
Lodge Valley bedding plane descent 3
Lodge Valley bedding plane descent to beach 4
Lodge Valley waterfall 1
Lodge Valley waterfall 2
Lodge Valley waterfall 3
Lodge Valley waterfall 4
Lodge Valley beach
Trevayne Point anticline
Overturned bedding at Trevayne Point
Monkstone Point folds 2
Monkstone Point folds 1
Nolton Haven seaward view
Nolton Haven channel lag deposit in beach boulder…
Nolton Haven channel lag deposit in beach boulder…
Nolton Haven channel sandstones 3
Nolton Haven channel sandstones 2
Nolton Haven channel sandstones
Nolton Haven sandstone channel scours
Nolton Haven ironstone pebbles in channel lag depo…
Nolton Haven ironstone pebbles in channel lag depo…
Nolton Haven sandstone channel edge lag deposits 2
Nolton Haven sandstone channel edge lag deposits 1
Nolton Haven sandstone channel edge 2
Nolton Haven sandstone channel edge 1
Nolton Haven north west cliffs of Pennant Sandston…
Rickets Head north mining activity panorama
Rickets Head end-on view
Rickets Head south mining activity panorama
Rickets Head Black Cliff Colliery tip and Newgale
Northcott Mouth anticline - detail
Fox Hole anticline, Little Haven, Pembrokeshire
Normal Faults in the Budleigh Salterton Pebble Bed…
Goskar Rock, North Beach, Tenby
Woodhouse Rock
1/50 • f/5.6 • 20.0 mm • ISO 400 •
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Maer Cliff incompetent deformation - detail
![Maer Cliff incompetent deformation - detail Maer Cliff incompetent deformation - detail](https://cdn.ipernity.com/200/37/88/39023788.503dbb11.640.jpg?r2)
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Chaotically deformed and disrupted thin sandstone bands within a horizon of highly sheared dark grey shale - behind the person - in the Bude Formation (upper Carboniferous) at Maer Cliff between Northcott Mouth and Bude, north Cornwall.
As a result of compression as part of the Variscan earth movements at the end of the Carboniferous, the weak (incompetent) shale has been strongly deformed, compared with the strong (competent) sandstone beds above and below the shale. Thin sandstone beds have been caught up in the deformed shale and have undergone severe folding and fracturing. The brown sandstone beds in the upper part of the cliff have moved to the left (north) relative to the lower sandstone beds, with the planes of thrusting and shearing being concentrated in the dark shale.
This deformation probably represents substantial slippage along the bedding planes of the weak shales to accommodate the 'space' problem in the series of chevron folds which characterise this area.
As a result of compression as part of the Variscan earth movements at the end of the Carboniferous, the weak (incompetent) shale has been strongly deformed, compared with the strong (competent) sandstone beds above and below the shale. Thin sandstone beds have been caught up in the deformed shale and have undergone severe folding and fracturing. The brown sandstone beds in the upper part of the cliff have moved to the left (north) relative to the lower sandstone beds, with the planes of thrusting and shearing being concentrated in the dark shale.
This deformation probably represents substantial slippage along the bedding planes of the weak shales to accommodate the 'space' problem in the series of chevron folds which characterise this area.
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