Re: Coastal Erosion -- Beachy Head

On Aug 28, 12:51 am, "Paul Crowley"
<slkwuoiutiuytciu...@xxxxxxxxxxxxxxxxx> wrote:
"Lee Olsen" <paleoc...@xxxxxxxxxxx> wrote in message

news:1188259701.747690.322540@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

We know that exposed to the open Pacific,
the sea can't wash petroglyphs off rocks in the surf in a matter of
75 years at a minimum.

This item of 'scentific knowledge' comes from
a casual observation by a tourist in her blog.

Will it make you happier if I get a quote from a marine biologist who
has seen these tidal petroglyphs?
I have been on that particular beach three times. I did not look for
the petroglyphs myself because I had better things to do, like climb
to the top of Cannonball Island, which has large fir trees and other
folige growing out of the steep sides. This demonstrates little
erosion is taking place. If a meter per year loss was occuring (as at
Dover), the top of Cannonball Island would have been gone long ago. I
was first out there in the late 1950s and used the same and only
trail to the top in 1976. Early historical photos of Cannonball Is.
don't look any different than the ones on the internet today.

I did not find out about the still visible rock piles from boat ramps
the NAs made until years later or I certainly would have looked for
those and got a picture, as they are near the archaeological site. The
most miraculous thing of all about that place were the glass fish
floats that were washed up on the beach, unbroken, driven in from
winter storms. When the tide goes out, all you can see is hundreds of
yards of rocks, how these floats could get past all those rocks in the
pounding surf, unharmed, I don't know. I don't remember ever seeing
any broken ones, but there must have been some.

I haven't even mentioned the 2000 or so ship wrecks in the area, a
few are still visible after as much as 300 years in the pounding
surf.


.

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