reactivation of the Acadian fold belt, Meguma zone, southwest Nova Scotia.
2006) and by a Paleozoic gneiss that is related either to the Taconic orogeny or the Alleghenian
orogeny (Cardona et al.
1998; Waldron and van Staal, 2001 and references therein), whereas the Alleghenian
orogeny was due to continent collision during final closure of the Rheic Ocean.
During the Pennsylvanian Period (320-286 Ma), the collision of North America and Africa resulted in the Alleghenian
Orogeny and final assemblage of Pangaea.
The terrane is polydeformed by Acadian and Alleghenian
tectonic pulses, presenting the full gamut of geologic mapping problems that must be addressed by GIS software.
It accreted to eastern North America during the mid-Devonian Neoacadian orogeny, with further juxtaposition during the Alleghenian
(Waldron et al.
U-Th-Pb geochronology of the Massabesic Gneiss and the granite near Milford, south-central New Hampshire: New evidence for Avalonian basement and Taconic and Alleghenian
disturbance in eastern New England.