West Cornwall - Geology
Greenstone - Porthleven Cliffs (S22)
The rocks in the Porthleven Cliffs are mainly fine grained sedimentary rocks ( turbidites).
When the turbidite sediments were still wet and unconsolidated , they were intruded by basaltic sills.
In the Pic , Mylor Slates (Turbidites) are on the left with Metadolerite (Greenstone) on the right ,
a sill some 10m thick , the Contact Zone is bleached.
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Access to the beach , on a low tide, from Porthleven or Loe Bar.
Ref: 5628s
Date: 14/04/2018
Location: SW 6324 2514