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Nanodiamond photomicrographs

Results from three sites: A-Lake Hind, Canada; B-Bull Creek, Oklahoma; and C-Murray Springs, Arizona. Stratigraphic profiles, shown at left for each site, show that nanodiamonds only in sediment of the Younger Dryas Boundary. Above-ground iridium levels appear at Lake Hind and Murray Springs. White arrows on the Lake Hind image show examples of where nanodiamonds appear in the carbon mix. Color-coded arrows in the upper right of each image refer to indexed spacing (in angstroms). The images are the results of transmission electron microscopy and the use of selected area diffraction patterns that focus on Younger Dryas Boundary sediment. (Image use courtesy of AAAS)

Nanodiamond photomicrographs
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