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
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…
Little Settlands - incompetent deformation 1
Little Haven - The Settlands; detail of overturned…
Little Haven - The Settlands; detail of incompeten…
Little Haven - The Settlands; detail of incompeten…
Little Haven - The Settlands; detail of southern a…
Little Haven - The Settlands; recumbent fold, thru…
Little Haven - The Settlands; recumbent fold, thru…
Little Haven - The Settlands panorama - geological…
Little Haven - The Settlands panorama
Fox Hole Anticline - northern limb 2
Fox Hole Anticline - northern limb 3
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
1/50 • f/7.1 • 15.0 mm • ISO 800 •
Canon EOS 600D
EF-S15-85mm f/3.5-5.6 IS USM
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Lat, Lng:
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Little Settlands - incompetent deformation 2
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.
Immediately north of The Rain headland is a small embayment: 'Little Settlands'. Here, a chaotic looking series of disturbed bedding and downward-facing small folds are in contact with a thin coal. The whole sequence is inverted, the inversion being a continuation of the overturned structure seen on The Rain and the northern end of the main Settlands bay.
Downward-facing means that the way-up, younging direction, of the folds is downwards, rather than the normal upwards. The evidence for the way up is provided by small scale (too small to be seen clearly in this photo) sedimentary slump and load casts on the bases of sandy layers within the predominantly shale and mudstone sequence. The inverted folds are thought to have been initiated immediately prior to the main folding and thrusting event.
This shows a closer view of the downward-facing fold in the previous photo. The younging direction is down towards the lower right, so the structure spanned by the walking stick is actually an overturned and inverted syncline.
The stick is 90 cm long.
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.
Immediately north of The Rain headland is a small embayment: 'Little Settlands'. Here, a chaotic looking series of disturbed bedding and downward-facing small folds are in contact with a thin coal. The whole sequence is inverted, the inversion being a continuation of the overturned structure seen on The Rain and the northern end of the main Settlands bay.
Downward-facing means that the way-up, younging direction, of the folds is downwards, rather than the normal upwards. The evidence for the way up is provided by small scale (too small to be seen clearly in this photo) sedimentary slump and load casts on the bases of sandy layers within the predominantly shale and mudstone sequence. The inverted folds are thought to have been initiated immediately prior to the main folding and thrusting event.
This shows a closer view of the downward-facing fold in the previous photo. The younging direction is down towards the lower right, so the structure spanned by the walking stick is actually an overturned and inverted syncline.
The stick is 90 cm long.
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