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Quoted By: >>2754243
Is Pine Mountain, that runs along the border of Virginia and Kentucky part of the Plateau province or the Ridge and Valley province?
It's a long irregular curved ridge running ~ 120 miles continuously from Cumberland Gap to Russell Fork and some geology sources seem to regard it as an extension of the allegheny front, which is both the separation point where the plateau begins running westward, and also where the terrain is most markedly divergent in steepness from east (much more) to west (much less).
But if you just look at a map, both Pine and Cumberland/Stone/Black mountains seem to be up on the plateau and the true Allegheny Front is at Osborne ridge roughly where Flag Rock is outside Norton, Virginia for example. Norton would be on the plateau, the other side (Dungannon) would be the first valley of the ridge and valley as the terrain gradually flattens eastward towards the sea.
The terrain SE of Pine Mountain has diagonal/dendritic shaped creeks - rather than the perpendicularly arranged creeks running 90 degrees into the river valley that you see in the ridge and valley.
So are these papers wrong, and in fact Pine Mountain is not the edge of the plateau or what is going on here? Why would a plateau have a long ridgeline like this geologically?
It's a long irregular curved ridge running ~ 120 miles continuously from Cumberland Gap to Russell Fork and some geology sources seem to regard it as an extension of the allegheny front, which is both the separation point where the plateau begins running westward, and also where the terrain is most markedly divergent in steepness from east (much more) to west (much less).
But if you just look at a map, both Pine and Cumberland/Stone/Black mountains seem to be up on the plateau and the true Allegheny Front is at Osborne ridge roughly where Flag Rock is outside Norton, Virginia for example. Norton would be on the plateau, the other side (Dungannon) would be the first valley of the ridge and valley as the terrain gradually flattens eastward towards the sea.
The terrain SE of Pine Mountain has diagonal/dendritic shaped creeks - rather than the perpendicularly arranged creeks running 90 degrees into the river valley that you see in the ridge and valley.
So are these papers wrong, and in fact Pine Mountain is not the edge of the plateau or what is going on here? Why would a plateau have a long ridgeline like this geologically?
