Earthwatcher

Earthwatcher deceased

Posted: 05 Oct 2008


Taken: 11 Sep 2008

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1/60 f/8.0 17.0 mm ISO 100


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Keywords

beach
Old Red Sandstone
Earthwatcher
Hercynian
Variscan
Milford Haven Group
quartz veins
en-echelon
conjugate
geo:lat=51.722565
Marloes
Devonian
rocks
geotagged
coast
cliff
geology
quartz
polariser
Wales
Pembrokeshire
geo:lon=-5.226027


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En-echelon quartz veins, Marloes, Pembrokeshire 3

En-echelon quartz veins, Marloes, Pembrokeshire 3
A even closer view of the en-echelon conjugate quartz veins in the Milford Haven Group (Lower Devonian) sandstones at the western end of Marloes Sands, Pembrokeshire.

The two conjugate sets indicate a localised tensional regime during the general Variscan folding of the area. They are arranged more-or-less symmetrically about the strike of the beds. In this photo the bedding is steeply inclined approx 60° to the south towards the camera.

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