Earth In Upheaval
page 87.
Peculiar elliptical depressions, or “oval craters,” locally called “bays” are thickly scattered over the Carolina coast of the United States and more sparsely over the entire Atlantic coastal plain from southern New Jersey to northeastern Florida. These marshy depressions are numbered in the tens of thousands and, according to the latest estimate, their number may reach half a million. Measurements made on the more prominent ones, seaward from Darlington, show that the larger bays average 2200 feet in length, and in single cases exceed 8000 feet...
(here I go, Google Earth again!)
I don’t know if it was in “Earth in Upheaval” or one of his other books, but Velikovsky also reported numerous finds of great heaps of shredded and broken large animal bones in Canada, and flash frozen Mammoths with undigested buttercups in their stomachs in Siberia, of the right age.
Regarding bay formations, could great chunks of ice have been blown all over the place causing gouges, and/or sitting and melting and forming pools which which would subsequently be modified by wind and frost?
For more than 30 years I have thought that the Younger Dryas could have been caused by a boloid impact. I thought it might have been in the North Atlantic after I read something about tectites found in our southern states oriented to the northeast of the right age. Unfortunately I have been unable to refind this information.