Deep Time _4,030,000,000 years_ Acasta Gneiss
Deep time. Oldest rock. Fist-sized sample from the Acasta River, an obscure little drainage up near Great Bear Lake, Northwest Territories, Canada. Self-collected from what is the oldest known in-situ (still in one piece/place/original form) rock formation on the planet, clocking in at 4.03 billion years old.
Postscript: Further age-dating measurements have pushed the Acasta River locale back to 4.2 billion years. Since I collected this sample from the 4.03 Ga site, I`ll leave it as is.
Deep Time _4,030,000,000 years_ Acasta Gneiss
Deep time. Oldest rock. Fist-sized sample from the Acasta River, an obscure little drainage up near Great Bear Lake, Northwest Territories, Canada. Self-collected from what is the oldest known in-situ (still in one piece/place/original form) rock formation on the planet, clocking in at 4.03 billion years old.
Postscript: Further age-dating measurements have pushed the Acasta River locale back to 4.2 billion years. Since I collected this sample from the 4.03 Ga site, I`ll leave it as is.