Explore / North America / Northwest Territories
Northwest Territories
Acasta gneiss locality
Mineral locality Documented siteGray area
What you could find
Reported finds from this ground.
Crystals and mineralsAlso reported: banded tonalite gneiss.
Photos via Wikimedia Commons: Stephanie Clifford from Arlington, VA, USA (CC BY 2.0).
.jpg){kind=link}
Why this spot
Four billion year old gneiss on the Acasta River, the oldest known intact crust
Documented in global geological literature, reached by chartered floatplane.
Before you go
Hazards noted for this site.
true wilderness, fly-in only
Keep exploring nearby
More spots in this area.