Approximately how old are the oldest layers of rocks in the Canadian Shield?
4 Billion Years
3 Billion Years
500 Million Years
1.5 Billion Years
Who was the first explorer to trace the shield in the 1851-51
Kingston West
Jeffery Ottawa
Alexander Murray
Owen Wonder butt
When was the last major glacier advance?
18,400 Years ago
19,000 years ago
18,500 years ago
18,000 years ago
Approximately How long is the canadin shild?
5 million km2
6 million km2
3 million km2
None
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