Figure 2. glacial erratic boulder

Figure 2. Example of a glacial erratic boulder sampled for surface exposure dating in Wisconsin. This boulder is fairly well-rounded from its transport in the ice sheet. These erratics can have a composition different from the local bedrock, suggesting that they may have traveled a great distance.

Image 30855 is a 480 by 640 pixel WebP
Uploaded: Sep19 11


Last Modified: 2011-11-11 12:20:18
Permanent URL: https://serc.carleton.edu/download/images/30855/figure_2._0.67864800.webp

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David Ullman, University of Wisconsin-Madison
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