EARTH IMAGES

Acasta gneiss


Detail from the oldest known crustal rock in the world, located in northwestern Canada and dated at nearly four billion years. x12,000

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Dee Breger
Mgr. SEM/EDX Facility
Lamont-Doherty Earth Observatory
61 Route 9W Palisades, NY 10964 USA

T: 914/365-8640 F: 914/365-8155
micro@ldeo.columbia.edu