Report on the geology and resources of the Black Hills of Dakota
Geology of the Black Hills of Dakota (1880) |
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| Date: | 1880 |
| Author: | USGS |
| Dwnld: | Full Size (9.85mb) |
| Source: | Library of Congress |
| Print Availability: | |
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| See our Prints Page for more details | |
This map isn't part of any series, but we have other geological maps that you might want to check out.
Interesting birdseye of some domed rock formation in the Black Hills [gmap] region of South Dakota. If you know which one, please let me know.
Very strange is the legend, which is a bit confusing, and which I've never seen the likes of, before. So... one diving bird represents archaean schists but two swooping birds represent carboniferous limestone. One gliding bird is dakota sandstone and two soaring birds is newer cretaceous. It's all very strange.
Looks like it’s the entire Black Hills region including parts of Wyoming and South Dakota. Compare with this modern image