As discussed at length in the above, most of the ice margin recession in Vermont took place by a step-down progression in a reverse gradient setting and therefore in close association between ice margins and standing proglacial water bodies. This led to the development of “Disaggregated” margins, which were believed to have been more or less open water corridors of proglacial waters penetrating a labyrinth of more or less isolated ice blocks along the ice sheet margin. In the Champlain Basin these corridors were associated first with Coveville , then Fort Ann Lake Vermont, and finally the opening of the basin for the Champlain Sea incursion. The progressively northward diachronic penetration of the Coveville and then Fort Ann corridors along the Champlain lobe lateral ice margins resulted in increased lobe convexity, which, along with the sudden and substantial lowering of water levels, led to destabilization of the Champlain lobe eastern lateral margin with its transformation from a lateral toward a frontal type margin, as marked by Streaks, calving ice features, and Ice Tongue Grooves (this last type of feature as yet only tentatively identified) and promoted calving and eventually ice streaming. Again, this thinking and understanding emerged as epiphanies regarding Glacial Dynamics.