AVALONIA
AXIAL REALM
Abyssal fan deposits
Acadian clastic wedge
Alleghanian plutonism
Clastic shelf
Continental rift basins and magmatism related to formation of the Atlantic Basin
GANDERIA
Grenville basement of Laurentia including ca. 1 Ga inliers within the hinterland
Iapetus drift facies - passive margin sequence
Iapetus rift facies
LAURENTIAN REALM (entire orogen)
MEGUMA
Magmatic arc
Magmatic arc to rift
Marine foredeep basin
Meguma cover sequence
Mid-Paleozoic bimodal magmatism in Peri-Gondwanan Realm
Mid-Paleozoic clastic wedge and time-equivalent rocks
Mid-Paleozoic magmatism mainly in Axial Realm
Mid-Paleozoic upper-plate sedimentary and magmatic rocks
Northern Appalachians
PERI-GONDWANAN REALM
Passive margin
Peri-Gondwanan Arc System (Iapetan)
Peri-Gondwanan basements
Peri-Laurentian Arc System (Iapetan)
Southern Appalachians
Syn-Acadian sedimentary and magmatic rocks
Taconic clastic wedge