Painted Hills located in Wheeler County, Oregon. It is one of the three units of the John Day Fossil Beds National
Monument. Painted
Hills is named after the colorful layers of its hills corresponding to various
geological eras, formed when the area was an ancient river floodplain. The
black soil is lignite that was vegetative matter that grew along the
floodplain. The grey coloring is mudstone, siltstone, and shale. The red
coloring is laterite soil that formed by floodplain deposits when the area was
warm and humid.
Images of Painted Hills, Oregon
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