Canyonlands National Park - Organ Rock Shale

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Tree in sandstone

Deposited

Permian Period (245 to 286 million years ago)

Depositional Environment

Marine lowlands, braided streams and tidal flats

Appearance

Dark red, lumpy mudstones/sandstones (forms towers with protective White Rim caprock)

Examples

Towers in Monument Basin in the Island in the Sky District of Canyonlands.