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Painted Hills Unit, John Day Fossil Beds National Monument
This red-colored hill is along the Painted Cove Interpretive Trail (in the Painted Hills Unit). The red color reflects the impact of soil development on ancient floodplain deposits. This ancient laterite soil (now a paleosol) formed in warm, humid conditions, much like in the southeastern United States today. The red strata occurs at the base of the John Day Formation. Brightly colored outcrops of a rhyolite tuff bed of the upper Clarno Formation also occur along the short interpretive trail.
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