Re: Coastal Erosion -- Beachy Head

Aug 27, 10:01 am, nickname <alas_my_lo...@xxxxxxxxx> wrote:
On Aug 26, 7:30 am, Lee Olsen <paleoc...@xxxxxxxxxxx> wrote:





On Aug 26, 12:01 am, nickname <alas_my_lo...@xxxxxxxxx> wrote:

On Aug 25, 5:01 am, Lee Olsen <paleoc...@xxxxxxxxxxx> wrote:

On Aug 23, 10:58 am, "Paul Crowley"

<slkwuoiutiuytciu...@xxxxxxxxxxxxxxxxx> wrote:
"Lee Olsen" <paleoc...@xxxxxxxxxxx> wrote in message

news:1187886775.146138.205030@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

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.

But the fact that you had to make a retraction, just as there were
lions in Europe, demonstrates your thinking process is continually
flawed.

On the contrary, when I make a mistake
(and it can happen) I admit it instantly.
When did you last make a mistake and
admit it?

Every post you make is a mistake.
You didn't admit it, you tried to lie your way out of it by claiming
it was a mere typo. A two part typo with dirctions for time,
"economical rate"? Who do you think you are kidding, yourself?

If I made a million mistakes, it wouldn't lend one iota of credence
to your ridiculous claim that hand axes can turn to dust in a matter
of months.

I'm a bit more conservative, but 48 months - 6000 months maybe?
Depends on circumstances but see here where glass was turned into
beach sand:http://news.yahoo.com/s/ap/20070826/ap_on_sc/beach_glass;_ylt=Aku6DXB...

But the beach cited was Dover. Flint axes are hard and the majority of
the rock is limestone, which is soft.
Pebbles of limestone could not grind up flint, storm or not, very
fast. 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. If the beach was all
flint pebbles, and the handaxe was limestone, the process would go
faster, but in a matter of a few years, I doubt it.



A handaxe begins turning into dust as soon as the first surface
particle is worn or broke off, so your really talking about the half--
life, not the time the whole stone takes to become dust. A broken or
worn-down hand axe is reduced in function (I guess) and form
(obviously), becoming just a few little pieces of stone and a bunch of
dust.


Please demonstrate a navigatable water between Naivasha and
Olorgesailie during the Pleistocene. Kind of a long portage for a
dugout across the hot, burning, sweaty savanna don't you think?

Ribbed boats = portage, dugouts = no portage, as stated earlier.

How did obsidian get from Naivasha to Ologesailie with no river?



Question. IYHO as a professional forester, do you think this would be
a good candidate for a dugout?

http://geoimages.berkeley.edu/Geoimages/Johnson/Biomes/BiomesAfrica/c...

Lee the first dugouts were built waterside, not in deserts or
savannas, rather probably at estuaries and bays.

Forget about the desert, I want to know if acacia is a viable source
for a dugout, or if it would be practical to make a dugout from acacia
at all, IYO?



IOW, you are claiming handaxes are never found more than 75 miles from
the coasts in Africa (see Isaac 1977)? What is your point?

No. I'm saying that a coastal species like Homo and Emperor penguins
might travel inland 75 miles with or without dugouts/handaxes, but
artifacts (Homo only) further inland would indicate dugouts.

And if there is no river? Many handaxes are found in the sand of dry
riverbeds by the hundreds. Many are fairly sharp and appear unused,
this means they were not rolled in the current. They were not made
there (lack of thinning flakes, nearest material source miles away).


"All over Africa" -- that's nuts.

That's even dumber than there were no lions in Europe. ROFL.

You forgot Kalambo Falls

60ka? a bit late?

AFAIK, it is the first woodworking not associated with hunting
activities (only one other exception, I will get to that later) and
associated also with a river. If any early dugouts were being used, it
is here you should find evidence.

I'd expect both hunting-butchering and woodcraft there, but much later
than those at the coasts, since a large waterfall would stop inland
progress for a while, just like when a bridge collapses, traffic
stops.

Come on, leave a canoe at the bottom and make another one at the top
of the falls and continue.
If bones and roots are preserved, then evidence of poles, paddles and
portions of dugouts should be there also.
Spears are found with animals in the late Acheulean, where are the
dugouts?



.

Relevant Pages

  • Re: Coastal Erosion -- Beachy Head
    ... A handaxe begins turning into dust as soon as the first surface ... Ribbed boats = portage, dugouts = no portage, as stated earlier. ... Emperor penguins march inland from the coasts) + upriver to first ...
    (sci.anthropology.paleo)
  • Re: All wet, wet apers (Re: Dugouts inland/coastal, Trade, Spears, Apes
    ... provided relatively safe access to remote inland areas where the big ... Dugouts allowed easy access to extra weapons including slingstone ... hollow tree trunks, were the first "pickup trucks", ... to move upstream and inland (w/o climbing adaptations), ...
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    ... provided relatively safe access to remote inland areas where the big ... Dugouts allowed easy access to extra weapons including slingstone ... well or run fast and had only thrusting spears IMO. ... Dugouts were the transitional technology enabling a coastal hominid ...
    (sci.anthropology.paleo)
  • Re: Carnivory in hippos
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