Little Haven - The Settlands panorama
Little Haven - The Settlands panorama - geological…
Little Haven - The Settlands; recumbent fold, thru…
Little Haven - The Settlands; recumbent fold, thru…
Little Haven - The Settlands; detail of southern a…
Little Haven - The Settlands; detail of incompeten…
Little Haven - The Settlands; detail of incompeten…
Little Haven - The Settlands; detail of overturned…
Little Settlands - incompetent deformation 1
Little Settlands - incompetent deformation 2
Little Settlands - inverted thin coals and disturb…
Druidston Haven: Cliff Section 6
Druidston Haven: Cliff Section 6 interpretation
Druidston Haven: Cliff Section 5 interpretation
Druidston Haven: Cliff Section 4
Druidston Haven: Cliff Section 4 interpretation
Druidston Haven: Cliff Section 3 interpretation
Druidston Haven: Cliff Section 1 interpretation
Druidston Haven: Cliff Section 1 panorama
Druidston Haven: Cliff Section 2 interpretation
Druidston Haven: Cliff Section 2
Druidston Haven: Cliff Section 3
Druidston Haven: Cliff Section 5
St Brides Haven - view east
St Brides Haven: colourful rocks, colourful sea
Victoria Bay bedding planes in Silurian sandstones
Victoria Bay and Skokholm Island
Extentional faults: Saundersfoot south
Extentional faults detail: Saundersfoot south
Small thrust and footwall syncline
Ladies Cave Anticline
Ladies Cave Anticline: interior hinge zone
Asymmetric anticline, Swallowtree Bay north
Syncline in Lower Coal Measures sandstones: Swallo…
Swallowtree Bay anticline-syncline couplet
Swallowtree Bay anticline-syncline couplet: detail…
Swallowtree Bay anticline-syncline couplet: detail…
Swallowtree Bay anticline-syncline couplet: detail…
Swallowtree Bay anticline-syncline couplet: detail…
Swallowtree Bay anticline-syncline couplet: detail…
Swallowtree Bay anticline-syncline couplet: detail…
Swallowtree Bay anticline-syncline couplet: detail…
Swallowtree Bay anticline-syncline couplet: detail…
Swallowtree Bay anticline-syncline couplet: detail…
Fox Hole Anticline - northern limb jointing with c…
Fox Hole Anticline - northern limb with mine adit
Fox Hole Anticline - northern limb 2
Fox Hole Anticline - northern limb
Little Haven - Fox Hole Anticline
Little Haven north side geological interpretation
Little Haven north side panorama
Little Haven view north over Rooks Bay and The Set…
The Settlands at Little Haven from coastal path
Tenby North Sands chevron fold couplet
Tenby North Sands chevron fold couplet panorama
Tenby North Sands chevron fold couplet structural…
The Goyt Syncline from Roach End (x 2 vert. exagg.…
Valley bulge folding at Rowlee Bridge, Ashop Valle…
Ladies Cave Anticline
1/80 • f/8.0 • 50.0 mm • ISO 400 •
Canon EOS 600D
EF-S15-85mm f/3.5-5.6 IS USM
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Fox Hole Anticline - northern limb 3
Structural geology of Little Haven and The Settlands
The cliffs from Little Haven to Broad Haven (and northward) display a spectacular range of geological structures, folding, faulting and thrusting, mainly in the Lower Coal Measures. The relatively weak mudstone and shale-dominated sequences show much incompetent deformation: tight, thrusted and overturned folds, in contrast to the thicker, stronger, sandstones which have formed relatively open and concentric folds.
The northern limb of the Fox Hole anticline forms the southern headland of The Settlands bay. The style of folding is open and concentric, largely due to the thick (approx 70 m in total) and competent (strong) nature of the sandstone of which it is comprised. At the western end of the headland the bedding dips at about 30° to the north, but this steepens along its length to become near-vertical at the far end of the headland as seen here, where the anticline is abruptly terminated by a fault (running more or less parallel to the shadow edge).
The southerly (right) dipping rocks at the far left are on the southern limb of a small anticline and may possibly be comprised of the uppermost beds of the Fox Hole sandstone, but the correlation is very uncertain.
Folding, faulting and thrusting make determination of the exact stratigraphic correlation of the Fox Hole sandstone difficult, but it is reasonably clear that this is the lowest stratigraphic unit in the Little Haven area and is well down in the Lower Coal Measures sequence.
The cliffs from Little Haven to Broad Haven (and northward) display a spectacular range of geological structures, folding, faulting and thrusting, mainly in the Lower Coal Measures. The relatively weak mudstone and shale-dominated sequences show much incompetent deformation: tight, thrusted and overturned folds, in contrast to the thicker, stronger, sandstones which have formed relatively open and concentric folds.
The northern limb of the Fox Hole anticline forms the southern headland of The Settlands bay. The style of folding is open and concentric, largely due to the thick (approx 70 m in total) and competent (strong) nature of the sandstone of which it is comprised. At the western end of the headland the bedding dips at about 30° to the north, but this steepens along its length to become near-vertical at the far end of the headland as seen here, where the anticline is abruptly terminated by a fault (running more or less parallel to the shadow edge).
The southerly (right) dipping rocks at the far left are on the southern limb of a small anticline and may possibly be comprised of the uppermost beds of the Fox Hole sandstone, but the correlation is very uncertain.
Folding, faulting and thrusting make determination of the exact stratigraphic correlation of the Fox Hole sandstone difficult, but it is reasonably clear that this is the lowest stratigraphic unit in the Little Haven area and is well down in the Lower Coal Measures sequence.
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