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Coasts of the sea: animals, vegetation and coastal geology
Coasts of the sea: animals, vegetation and coastal geology
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Conglomerates at Gravel Bay
Freshwater West, Gravel Bay and East Pickard Bay
Massive conglomerates and grey sandstones dipping steeply to the north (right) of the Freshwater East Formation (note name) at Gravel Bay, situated at the northern end of the large Freshwater West bay in south Pembrokeshire. The walking stick is 0.9 m long.
The Freshwater East Formation marks the beginning of 'Old Red Sandstone' type of sediments, formerly believed to be at the base of the Devonian, but now assigned to the uppermost Silurian. The pebbles and cobbles in the conglomerates mostly consist of white vein quartz and quartzite, grey sandstones and darker sitstones. These were depositied in an alluvial fan settting on a shallow floodplain in increasingly arid conditions.
Massive conglomerates and grey sandstones dipping steeply to the north (right) of the Freshwater East Formation (note name) at Gravel Bay, situated at the northern end of the large Freshwater West bay in south Pembrokeshire. The walking stick is 0.9 m long.
The Freshwater East Formation marks the beginning of 'Old Red Sandstone' type of sediments, formerly believed to be at the base of the Devonian, but now assigned to the uppermost Silurian. The pebbles and cobbles in the conglomerates mostly consist of white vein quartz and quartzite, grey sandstones and darker sitstones. These were depositied in an alluvial fan settting on a shallow floodplain in increasingly arid conditions.
neira-Dan has particularly liked this photo
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Earthwatcher club has replied to neira-Dan clubDans le sud-est de l'Angleterre, nous avons également un conglomérat rocheux nommé "Hertfordshire Puddingstone".
en.wikipedia.org/wiki/Hertfordshire_puddingstone
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