Beneath our feet lies an ancient chronicle written in stone, stretching back an astounding 4 billion years. Earth’s oldest geological formations in nature stand as testament to our planet’s tumultuous birth, preserving secrets from when continents first emerged from primordial seas.
The Acasta Gneiss of Northwest Canada, dating back 4.03 billion years, holds the title of Earth’s oldest exposed rock formation. These metamorphic rocks, transformed under intense pressure and heat, offer invaluable …









