Multimedia Gallery - Scanning electron microscope image of novaculite (a quartz-rich rock) sample after sliding at 3 mm/s

December 22, 2004

Scanning electron microscope image of novaculite (a quartz-rich rock) sample after sliding at 3 mm/s

Scanning electron microscope (SEM) image of novaculite (a quartz-rich rock) sample after sliding at 3 mm/s. View is of the margin of a pit on the smooth sliding surface. The flat area in the lower left and bottom is a small portion of the gel-covered sliding surface. Wear debris are visible in the pit that occupies the upper right half of the image. The margin of the pit shows gel flow structures, two of which are shown by arrows, where the gel has been smeared into the pit. (Scale bar = 20 mm).

Credit: Terry Tullis, Brown University; NSF

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