Photos of upper Pierre shale in Badlands National Park. This horizon contains an extensive weathering profile and the rocks are golden-yellow. |
Pierre Shale. Only the upper portion of the Pierre Shale is exposed within Badlands National Park. The age of strata in the park spans the Late Cretaceous ... |
26 авг. 2016 г. · As the water level dropped and the sea floor became land, the Pierre Shale (the bottommost rock layer of the Badlands) crumbled into soil ... |
18 окт. 2024 г. · Named for exposures studied near old Fort Pierre, S.D., the Pierre Shale occurs in South Dakota, Montana, Colorado, Minnesota, New Mexico, Не найдено: badlands | Нужно включить: badlands |
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