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Archiver > GENEALOGY-DNA > 2005-03 > 1110303765


From: "Jim Lawson" <>
Subject: RE: [DNA] Sea Depths - worldwide.
Date: Tue, 8 Mar 2005 12:42:47 -0500
In-Reply-To: <6.1.2.0.2.20050308092122.0a253e80@philr.pobox.stanford.edu>


Phil, good point. To take that thought ever further, you also have the
scouring effect of the glacier. I.E. the finger lakes found where glaciers
pushed the earth during their growth.
One would think there would be a discernable bulge approximating the outline
of the glaciers circumscribed around the earth. Are the tectonic plates
flexible enough to reform to their original elevations after the weight is
removed or lessened? Not knowing much about geology, but one should be able
to make some rough calculations. How many feet of elevation change would it
take to have a real effect on land bridges. On the other hand, does the ice
become the land bridge? Just some thoughts.

Jim



-----Original Message-----
From: Philip Ritter [mailto:]
Sent: Tuesday, March 08, 2005 12:21 PM
To:
Subject: Re: [DNA] Sea Depths - worldwide.

I've finally gotten around to reading After the Ice by Steven Mithen. One
of the things that is mentioned there is that the weight of the glaciers
actually depressed the land that was covered with ice, causing the land to
bulge up in the latitudes south of the glaciers. Thus the sea depths in
1990 may not tell the complete story of what lands might have been exposed
during the ice ages.

At 06:18 AM 3/8/2005, you wrote:
>1990 should probably work; those depths don't change too rapidly.
>----- Original Message -----
>From: "AAF" <>
>To: <>
>Sent: Tuesday, March 08, 2005 3:56 AM
>Subject: [DNA] Sea Depths - worldwide.
>
>
> > The Times Atlas of the World, published by the London Times Newspaper
>Group,
> > gives sea depths on all its maps. My copy was published in 1990, but i
>think
> > there is a new, updated edition every two years or so.
> > Alan Foster.
> > ===============
> >
> >
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