The Adirondack Mountains of New York State: Part I – What's so unique about their geology? | Conformable Contacts |

A beautiful post.  This guy is good.


Interesting comment about the Adirondacks:


"The Adirondacks ARE indeed ancient; however, they are NOT old mountains but NEW (geologically speaking). They’re actually some of the youngest on Earth, and according to some accounts, they’re still rising! They are, therefore, 'new mountains from old rocks.'"


In the Flood model, they would have been uplifted during a worldwide marine transgression, and the current drainage network established during emergence from inundation. I would argue from the lack of water gaps, which occur both to the east and the south, that this mountain range would have been uplifted in the very late stages of recession, possibly even after the majority of water had drained away.


It may be argued from topographical analysis that the Mohawk River, a major tributary of the Hudson, which enters into the Hudson just south of the Adirondacks, lies in a glacial through-valley, the erosional remnant of a glacier which flowed from the Great Lakes to the Hudson Valley.  If you color in between the 240-320m contours on a topographic map, you can see this through-valley.  The fact that the Mohawk River now flows to the east instead of to the Great Lakes is probably because of the uplift of the once-glaciated Lakes area after the weight of the glacier was removed.