Re: Ballard Chases History Again In The Black Sea

On Aug 20, 8:21 am, "Peter Alaca" <p.al...@xxxxxxxxxxxxxx> wrote:
Hayabusa <peregr...@xxxxxxxxxxx > wrote:
On Sun, 19 Aug 2007 20:54:39 +0200, "Peter Alaca"
<p.al...@xxxxxxxxxxxxxx> wrote:

Define 'gradual'

That's precisely the point. The two of you have different
understanding of what is 'fast'. Gradual could be flooding over a
year, or over 100 years. In either case it is not a flashflood. But if
it is over 100 years, one might expect a number of drowned beaches and
reworked surface whereas if it was over a year, indeed there might be
some vegetation preserved, at least sub-soil in the root level.
(Actually, if they find tree roots that would be a great way to date
the flooding.)

Ik takes at least a year for the vegetation to adapt
to a significant change in waterlevel.
And many graslands, in the past and today, are
waterlogged or drowned for the best part of the year
and still are used, mostly for haymaking.

As far as I know, Ballard has found a house down there with
upright-standing walls. That does not sound like it was subjected to
beach processes for even weeks, it may have gone faster.

Hayabusa

That does not sound like it was subjected to a flashflood.
A flashflood comes with great force in one or two days, so
standing walls are less likely.
And the vegetation becomes covered with sand, clay, silt
or debry.

--
p.a.

IIRC the Black Sea is over 150,000 square miles even a multiple-
Niagara flow would take some time to fill that. Today the flow of salt
(48 cu. mi) and fresh (75 cu. mi) water is considerable but the
evaporation keeps the water level more or less steady. Mildly
complicated by the large flow of fresh water out of the Black Sea in
the 8th millennium BC.

.