2009

SN1333 : Contraction joints in rhyolite

taken 16 years ago, 3 km from Eglwyswen, Pembrokeshire/Sir Benfro, Wales

Contraction joints in rhyolite
Contraction joints in rhyolite
After eruption, these igneous rocks - rhyolite here at Carn Alw, dolerite elsewhere in the area - cracked during cooling along straight lines and often subsequently split into blocky, angular shapes.

Creative Commons Licence [Some Rights Reserved]   © Copyright Natasha Ceridwen de Chroustchoff and licensed for reuse under this Creative Commons Licence.
Category: Geological feature
This photo is linked from: Automatic Clusters: · Carn Alw [8] · Rhyolite [3] ·
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SN1333, 29 images   (more nearby 🔍)
Photographer
Natasha Ceridwen de Chroustchoff   (more nearby)
Date Taken
Sunday, 16 August, 2009   (more nearby)
Submitted
Thursday, 20 August, 2009
Subject Location
OSGB36: geotagged! SN 138 337 [100m precision]
WGS84: 51:58.2692N 4:42.6572W
Camera Location
OSGB36: geotagged! SN 138 337
View Direction
EAST (about 90 degrees)
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Image classification(about): Supplemental image
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