Subunits Within the Shield Are Delineated by Radiometric Ages and Structural

Q1: Both the presence of banded iron formations

Q6: The Ediacaran fauna include representatives of the

Q46: The Grenville orogeny was the culminating event

Q50: What are the three major units found

Q52: The _ orogen is the earliest that

Q53: What factor(s)led to the enormous scale of

Q54: Proterozoic layered igneous intrusions are the world's

Q56: Most of the volcanism associated with greenstone

Q58: The Sudbury Basin was the site of

Q60: The formation of the Midcontinent rift was