So Canada site is a giant meteor crater. How cool

"The geology of the area is dominated by the Sudbury Structure, a deformed crator structure as the result of a meteor impact 1.85 billion years ago. Both Archean and Proterozoic rocks within an 80km wide zone around the impact have been brecciated and partially melted. The Iron Mask Cobalt Project lies within an outlier of Huronian Supergroup sediments of the Cobalt Embayment. This sediment package rests unconformably on an irregular eroded Archean felsic intrusive basement.

Characteristics of rocks affected by the meteor impact have been mapped and noted on the Iron Mask Cobalt Property. "

how cool.