The Taconic Mountains are located in the eastern side of New York City which was formed due to the sharing of a convergent type of plate boundary between the North American plate and a volcanic island arc which resembles the state of Taiwan. The ridge of this mountain at certain places is comprised of tilted sandstone and conglomerate rocks and also there is the presence of metamorphosed rock layers.
This mountain was formed about 450 million years back, during the time of Ordovician.
