Image: Douglas geologic map
Size of this preview: 800 × 386 pixels. Other resolutions: 320 × 154 pixels | 1,244 × 600 pixels.
Original image (1,244 × 600 pixels, file size: 1.75 MB, MIME type: image/png)
Description: Douglas geologic map
Title: Douglas geologic map
Credit: USGS Bulletin 287, The Juneau Gold Belt, Alaska
Author: Arthur C. Spencer
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
Image usage
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