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Earthwatcher deceased

Posted: 02 Apr 2019


Taken: 27 Sep 2018

2 favorites     2 comments    134 visits

1/60 f/8.0 15.0 mm ISO 100

Canon EOS 600D

EF-S15-85mm f/3.5-5.6 IS USM


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Rochers / Rocks Rochers / Rocks


Geology Geology


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Keywords

beach
Fox Hole Anticline
Little Haven
The Settlands
coal mining
Pembrokeshire
Wales
geology
folds
sandstone
coast
cliffs
rocks
Lower Coal Measures


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Photo replaced on 06 Jun 2020
134 visits


Little Haven - Fox Hole Anticline

Little Haven - Fox Hole Anticline
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.

This is a view of the Fox Hole anticline taken from beach level. The style of folding is open and concentric, largely due to the competent (strong) nature of the sandstone of which it is comprised. A thin coal in the core of the anticline has largely been extracted by mining.

The sandstone displays a number of sedimentary features, including cross-bedding and channel erosion, formed by deposition in a high-energy delta distributary channel setting. Restoring the anticline to its 'unfolded' condition, these sedimentary structures then indicate a general current flow direction from south-west to north-east.

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.

Amelia, neira-Dan have particularly liked this photo


Comments
 neira-Dan
neira-Dan club
superbe série de photos sur cette côte rocheuse!!
Bienvenue dans le groupe , que de belles contributions
4 years ago.
Earthwatcher club has replied to neira-Dan club
Merci neira-Dan!
4 years ago.

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