A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Unkpapa Sandstone in Calico Canyon, Black Hills, South Dakota |
|---|---|
| Description | Unkpapa Sandstone in Calico Canyon, Black Hills, South Dakota. View includes color bands and at least eight microfaults. Microfaulting locally common in banded samples, occurring in singular or multiple parallel groups numbering as many as four or more; faults often criss-cross at any angle; some faults are clean, most of dragged appearance. Argillaceous, very fine-grained, massive quartz wacke sandstone; moderately indurated but friable, permeable, no indication of cement. Colors range from pale yellowish orange (10YR 8/6) to grayish orange (10YR 7/4) to pale red purple (5RP 6/2) to pinkish gray (5Y 8/1). |
| Chronostratigraphy | Jurassic |
| Lithostratigraphy | Unkpapa Sandstone |
| Geologic province | Black Hills |
| Location | USA ▹ South Dakota ▹ Custer. Near Buffalo Gap. Boland Ridge Quadrangle. |
| Photographer | Joseph Hartman. 1975. |
| Collection | Joseph Hartman P00855. |
| Key words | Unkpapa, calico canyon, Black Hills, fault |
| Tech details | 264 KB. Outcrop. Kodachrome, TIFF format. |
| GeoDIL number | 1799 |
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