Raised Beach - Porth Nanven (S12)

Nanven is an unusual type of raised beach - a raised boulder beach.
Smooth granite boulders of varying sizes deposited about 120,000 years ago when sea levels were higher (12m) than now .
The raised beach is overlaid with angular frost shattered rocks from Periglacial tundra conditions - continued freeze / thaw cycles weathering the rock - 10,000 to 100,000 years ago.
Lower sea levels and erosion have left the ancient beach suspended in the cliff high above the present sea level.
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Location - South of Cape Cornwall in Section / Gallery 12
Ref:
2486
Date:
2015-10-27 00:00:00.0
Location:
SW 3556 3092
Photographer:

Raised Beach - Porth Nanven (S12)

Nanven is an unusual type of raised beach - a raised boulder beach.
Smooth granite boulders of varying sizes deposited about 120,000 years ago when sea levels were higher (12m) than now .
The raised beach is overlaid with angular frost shattered rocks from Periglacial tundra conditions - continued freeze / thaw cycles weathering the rock - 10,000 to 100,000 years ago.
Lower sea levels and erosion have left the ancient beach suspended in the cliff high above the present sea level.
--------------------
Location - South of Cape Cornwall in Section / Gallery 12
Ref:
2486
Date:
2015-10-27 00:00:00.0
Location:
SW 3556 3092
Photographer: