In the southern Appalachians of Alabama, Georgia, and North Carolina, the Taconic orogeny was not associated with collision of an island arc with ancient North America (Laurentia).
Nos Apalaches do sur da zona de Alabama, Xeorxia e Carolina do Norte a oroxenia tacónica non estivo asociada ao choque dun arco de illas contra a antiga Norteamérica (Laurentia).