January 01, 2013
Posted by: jcarlton at Tue Jan 1 23:28:35 2013 (i0RQw)
Posted by: Pixy Misa at Thu Jan 3 02:16:57 2013 (PiXy!)
Posted by: The Brickmuppet at Thu Jan 3 03:28:23 2013 (C3KwS)
Posted by: Steven Den Beste at Thu Jan 3 07:17:59 2013 (+rSRq)
My understanding is that the southern Chesapeake Bay is largely sedimentary, not glacial in origin. They were indirectly created by glaciation, but mostly because of runoff from distant upstream glacial masses, not the actual glaciers themselves.
Posted by: Mitch H. at Thu Jan 3 10:40:53 2013 (jwKxK)
The area in the picture is just silt deposited by the rivers that join in the Roads and sand deposited by the ocean. It's like a delta but the main channels are very wide and don't move around.
During the ice age the James, Elizabeth and Pagan rivers merged in what is now the roads and went down rapids into the Potomac which was at the bottom of the then steep valley/canyon that eroded its way through the meteor crater we now call the Chesapeake Bay. That gorge went almost to the then coast (near the continental shelf). This area used to be very hilly on the edge of a canyon but it is all silted up now because of rising sea levels resulting from GLOBAL WARMING which in addidtion to making Al Gore rich causes boring landscapes.
Posted by: The Brickmuppet at Thu Jan 3 11:01:06 2013 (vp6an)
Posted by: The Brickmuppet at Thu Jan 3 11:02:36 2013 (vp6an)
Posted by: Steven Den Beste at Thu Jan 3 11:19:06 2013 (+rSRq)
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