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…
Marros west cliffs
West of Telpyn Point - fault in Telpyn Point Sands…
Conglomerates at Gravel Bay
Gravel Bay - Moor Cliffs Formation with calcretes…
Gravel Bay - Moor Cliffs Formation with calcretes…
Gravel Bay - Moor Cliffs Formation
East Pickard Bay panorama
Druidston Haven: Cliff Section 6
Druidston Haven: Cliff Section 6 interpretation
Druidston Haven: Cliff Section 5
Druidston Haven: Cliff Section 5 interpretation
Druidston Haven: Cliff Section 4
Druidston Haven: Cliff Section 4 interpretation
Druidston Haven: Cliff Section 3
Druidston Haven: Cliff Section 3 interpretation
Little Haven - The Settlands panorama - geological…
Little Haven - The Settlands panorama
Fox Hole Anticline - northern limb with mine adit
Fox Hole Anticline - northern limb jointing with c…
Fox Hole Anticline - northern limb 3
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 structural…
Tenby North Sands chevron fold couplet panorama
Tenby North Sands chevron fold couplet
Bullslaughter Bay panorama
Bullslaughter Bay caves
Bullslaughter Bay folds 2
Bullslaughter Bay
Bullslaughter Bay folds
View west from Mewsford Point
View to St Govans Head
1/100 • f/7.1 • 19.0 mm • ISO 100 •
Canon EOS 600D
EF-S15-85mm f/3.5-5.6 IS USM
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Little Haven - The Settlands; recumbent fold, thrusts, and overturned bedding
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 cliffs at the east end of The Settlands bay display a series of complexly thrusted, folded and faulted Lower Coal Measures rocks. The folds are overturned to the north, becoming nearly recumbent (low-angle fold axes) near the northern headland, known as 'The Rain', seen here on the left. The complexity of the folding is mostly due to the predominance of weak mudstones and shales which undergo incompetent deformation, in contrast to the open folding in the strong sandstone Fox Hole anticline in previous photos, and in the less disturbed but overturned sandstone sequence on the left of this photo.
The principal structure in the central region of the photo is a nearly recumbent fold with several associated thrusts. There are two main thrusts and several smaller thrust splays which result in repetition of the strata, mainly around the horizon of the Amman Marine Band.
More detailed view here:
A generalised geological interpretation is given in the adjacent photo here:
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 cliffs at the east end of The Settlands bay display a series of complexly thrusted, folded and faulted Lower Coal Measures rocks. The folds are overturned to the north, becoming nearly recumbent (low-angle fold axes) near the northern headland, known as 'The Rain', seen here on the left. The complexity of the folding is mostly due to the predominance of weak mudstones and shales which undergo incompetent deformation, in contrast to the open folding in the strong sandstone Fox Hole anticline in previous photos, and in the less disturbed but overturned sandstone sequence on the left of this photo.
The principal structure in the central region of the photo is a nearly recumbent fold with several associated thrusts. There are two main thrusts and several smaller thrust splays which result in repetition of the strata, mainly around the horizon of the Amman Marine Band.
More detailed view here:
A generalised geological interpretation is given in the adjacent photo here:
Fred Fouarge has particularly liked this photo
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