Westerly Granite  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Pennsylvanian
 .....Westerly Granite
RTConnecticut
 Rhode Island
SNPennsylvanian or younger. Finely crystalline gray rock, which shows minor variations in color and texture but which is petrographically the same. SE Connecticut and SW Rhode Island.