"Tim Tyler"  wrote in message
news:ci7mqk$24r1$1{at}darwin.ediacara.org...
> Brett Aubrey  wrote or quoted:
> > > On Sun, 12 Sep 2004 18:23:23 +0000 (UTC), Tim Tyler

> > > >Quite a few OOL scenarios put the OOL on the ocean floor.
> > > >Others invoke evaporative tidal pools.
> > > >I'd say that the odds were that the water was pretty salty.
> > I was aware of thermal vents and tidal pools; but thought there might
> > fresh water scenarios based of my "stunning logic"  ;-)
 that I hadn't
> > heard about. [...]
>
> Not impossible.  Life /could/ have begun in fresh-water lakes, if
> conditions there have some particularly OOL-favourable characteristics.

Another of the potentially favourable characteristics that I had thought of
is the presence of clays around many rivers and lakes.  I gather some OOLs
give clays an early role and in my experience, there isn't much clay-like
material around oceans, which I see tending to be more sandy or rocky.
FWIW.

> We don't know in detail what conditions the OOL needed - so such
> scenarios must stay on the table.
> My money would probably go on the ocean, though:
> There's a /lot/ of it - it's fairly well protected from radition - it
> is fairly stable - and I suspect its saltiness isn't that big a deal.
> -- 
> __________
>  |im |yler  http://timtyler.org/  tim{at}tt1lock.org  Remove lock to reply.
>
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