[GSlob]

if there was not enough water level differential [shallow lake with low shores as measured from the lake bottom], the water would drain slowly [not in 24 hours] - it would be nowhere near causing catastrophic erosion. And the nothern rim, or whatever remains of it, should still exist, even if under water.

[Socratic]

Your arguments do not, "hold water." You seem to know that the differential between this supposed lake and the prevailing sea level was a minor thing. Something for which you offer no evidence. Secondly, the proposed Northern shore would not have to be anything other than the Continental Shelf in the current North Sea area, if the ancient sea level were low enough. How you insist that there must be some great defining Northern ridge is beyond me. It could just be a slight rise - just enough to contain the waters of the lake. When the supposed breach occurred to the South, the defining aspect of its scoring effect would be the difference in water levels. For which you, again, offer no proof as to how low the prevailing sea level was at that time.

[thomaswest]

The accounts written here make no sense. If the author is unaware of the great Rhein Graben valley through the middle of Europe he is ignorant. If the author imagines there was a great Cenozoic lake in the North Sea area, he will have to explain why this did not drain via the channels seen north-west of the Orkneys. Or via channels north-east toward Spitsbergen.

The account does not make sense.