Re: Coastal Erosion -- Beachy Head

"Lee Olsen" <paleocity@xxxxxxxxxxx> wrote in message
news:1187870805.254524.257920@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

The weakening of the top of the cliff from
ice (and other weathering) would have no
significant effect (if any at all) on its rate of
erosion. That would be determined by the
action of the waves at the bottom. The top
will go anyway, as soon as the bottom does.
Any earlier falls (caused by ice, etc.) can
have no effect.

The examples that started this discussion were the Table Bay hand
axes.

This discussion has always been about coastal
erosion,

No, this statement was the issue that I proved false.
Tues, May 16 2006 4:05 pm
Message ID: RVsag.9272$j7.305859@xxxxxxxxxxxxxx

Crowley: "Hand axes were produced by grinding,
and at an economical rate by hominids.

I admitted that statement was false as
soon as anyone questioned it (and that
may have been you). It cannot have
been an issue since that time -- although
I accept that a withdrawal would have
no effect on someone as dense as you.


Hominids have always been able to travel, and
(as in all other species) have often tried to do,
especially as juveniles and refugees.

Yep, proven by tracing lithic sources at Gona 2.6 mya etc, and they do
not trace back to beaches.

It's hardly likely that refugee hominids
would carry rocks for a hundred miles
or more -- when they are fairly easily
found along the way.

It is their
fossils which are found -- mostly far outside
the hominid habitat -- which has given rise to
the absurd notions of a 'savanna hominid'.

Gona 2.6 mya = ostriches + antelope = millions of flakes = hominids
living on the savanna. You can not walk from the inland sites to the
ocean in a day. They had to live inbetween.

They might have survived months --
assuming that "inter-glacial" conditions
applied. However, it is most unlikely
that they were ever able to breed, or
raise young. The great majority would
have been living off their fat, and been
in fairly rapid decline.


Paul.



.

Relevant Pages