Pebbles on the beach at Lariggan - 19Feb10
trepolpen

Pebbles on the beach at Lariggan - 19Feb10

The famed shore here and at Long Rock are a goldmine in terms of the variety of rocks and minerals that have been inexecrably smoothed and rounded by the sea's ageless action: quartz, moonstone, garnet, agate, greenstone, granite, schists, serpentine
Pebbles and Shingle are accessible geology. Unfortunately this area of shore has been corrupted. But generally speaking pebbles and larger rounded stones are natural. The smaller shingle is formed both from naturally occurring stone and material tipped here on occasion. The shore is volatile. Not only does it move from action of the sea, along the coast, it rotates from material in the Bay, as if it was a giant wave of rock. Some material has come from Quarry waste, other from sea tipping. There has been some loss from ship misfortune. The irony is that shingle was removed from this 3 mile shoreline to form building gravel in previous times. The shore contains the history of the Bay, a fact appreciated a hundred years ago, but now forgotten and corrupted. There are some stones that have travelled hundreds of miles, transported by geological and marine action.
 

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PENZANCE AND AREA MISCELLANY - 2000 ONWARDS
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