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of70-0407sht01dggs.alaska.gov/webpubs/usgs/of/oversized/of-0407sht01.pdf · from a few inches to more than 20 feet thick. Base of unit north of Chisana Glacier characterized by flows

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Page 1: of70-0407sht01dggs.alaska.gov/webpubs/usgs/of/oversized/of-0407sht01.pdf · from a few inches to more than 20 feet thick. Base of unit north of Chisana Glacier characterized by flows