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I don't know which bays/oriented lakes you refer to here...

The "oriented" lakes in South Africa at ~5000'. I also didn't mean to imply(although it may have looked like it) there were marine sediments associated with these particular formations, but more generally about marine sediments found at great elevations in other parts of the world. Most, but not all of these sediments are really old; the Alps, Himalayas, etc.

...but tectonism affects every place in some way or another. A geologist sent me an abstract on Friday concerning some work he's been doing in our area, which suggested (among other things) that this area (Southern Maryland) had been uplifted ~40 meters in the last 37,000 years (mostly, he thinks, due to forebulge during the Wisconsinian glacial maximum).

I ran across an article in my searches reaching a similar conclusion.

Please see if you can review this paper:

I doubt I'll go quite that far, but I did run across this from HERE:

Stratigraphic Cross-section of the Virginia Coastal Plain

Legend
	Q -	Quaternary formations fluvial and estuarine, silt, sand, and clay
	Tbc -	Bacons Castle Formation fluvial-deltaic and tidal, gravel, sand, and clay
	Ty -	Yorktown Formation marine, fossiliferous sand
	Te -	Eastover Formation marine, sand and clay
	Tb -	Bon Air Gravel fluvial, gravelly sand, silt, and clay
	Tex -	Exmore Breccia
	TK -	Older Tertiary and Cretaceous formations marine and deltaic, sand and clay

There is nothing to indicate distances and the time periods aren't much help either. If you could maybe flesh it in a little???

FGS

If you could flesh it in a little.

I don't know if this will help but here are a few thoughts about the Stratigraphy. Tex, the Exmore Breccia was formed when the great Chesapeake boloid crashed about 34 million years ago leaving a crater 50 miles in diameter, with the north end in Exmore (Delmarva Pen.) and the south end at Norfolk. As I may have said before if interested, read "Chesapeake Invader" by Wylie Poag (1999). Before his research, the source of the breccia was unknown. Now it is recognized as the broken rock that tumbled back into the great crater left behind. This also explains the two fault lines under Hampton and Chesapeake Bay. What I don't understand is why there is no Tex under TK in the fault block. If the section was drawn up before 1999 maybe they didn't look hard enough. TK is older Tertiary and Cretaceous formations. Perhaps TK to the left is Cretaceous, but TK over Tex has to be younger than 34my. Te, marine, sand and clay, may have been the deposition over the entire area as marine sediments covered the disaster area. Apparently the fault block subsided over a period of time. Of course the age of TK in the fault block and the age of Te would be useful information. Poag's book also has several stratigraphic sections of the area.