Surface Geologic Photographs
Ef with interbedded quartzite and phyllite No 2 Hwy 85 |
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Hf sid chlor showing unmin qz veins Hwy 85 |
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Pmf with chert Hwy 14A No 2 |
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Podded Chert IF Central City |
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YM Amphibolite Blacktail Gulch |
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Color airphoto, northern |
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Open Cut at Lead, SD |
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Cambrian - PreCambrian
Contact near Ross Shaft |
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Yates Shaft and other
buildings |
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Ross Shaft (looking east) |
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Ross Shaft |
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Yates shaft (courtesy
South Dakota Science and Technology Authority) |
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Yates headframe (courtesy
South Dakota Science and Technology Authority) |
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Yates – wide view (courtesy
South Dakota Science and Technology Authority) |