A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Color bandings in the Unkpapa Sandstone, Calico Canyon, Black Hills, South Dakota |
|---|---|
| Description | 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). Color banding common, planar, curved, and Liesegang. 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 have a dragged appearance. |
| Chronostratigraphy | Jurassic |
| Lithostratigraphy | Unkpapa Sandstne |
| Geologic province | Williston Basin |
| Location | USA ▹ South Dakota ▹ Custer. Near Buffalo Gap. Boland Ridge Quadrangle. |
| Photographer | Joseph Hartman. 1975. |
| Collection | Joseph Hartman P00850. |
| Key words | Calico Canyon, Unkpapa, Black Hills, Liesegang banding |
| Tech details | 214 KB. Outcrop. Kodachrome, TIFF format. |
| GeoDIL number | 1798 |
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