Title | Exposure of the Odanah Member of the Pierre Formation, North Dakota |
Description | The Odanah Member is exposed in a shale pit on the north side of the road. The unit was deposited in a shallow-water marine environment during the Cretaceous about 71 to 74 million years ago (interpreted from Hardenbol et al., 1998). The Odanah Member is a hard, siliceous, light-gray shale and forms conspicuous cliffs. It is locally quarried for road-surfacing material. Fossils are scarce in the Odanah, although oyster and inoceramid fossils have been recovered. |
Location | USA ▹ North Dakota ▹ Cavalier. Near Vang. Olga NW Quadrangle. |
Photographer | Joseph Hartman. 2002-05-07. |
Collection | Joseph Hartman C9420. |
Key words | 02e, Odanah, Pierre, shale |
Tech details | 670 KB. Kodachrome, TIFF. |
GeoDIL number | 2858 |
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