Around 55 million years ago a large pluton of metamorphic rock burst through the earth's crust due to subduction stresses. In the eastern plains of Colorado, the Paint Mines Interpretive Park stands as a result of this subduction shift in the earth's lithosphere.
Weathering and erosion are evident among the metamorphosed sedimentary rocks. This image shows the 3 distinct strata layers, which appear to be a combination of siltstone and sandstone; based on the flaking and crumbling nature of the rocks.
http://farm7.staticflickr.com/6111/6228042574_266d8f6826_b.jpg
Triangular facets are a defiant feature among the paint mines interpretive park. This large scale topographical map compliments of GoogleMaps displays these facets and possibly some alluvial fans. This second image gives us a clearer view of these triangular facets.
http://images.summitpost.org/original/479010.JPG
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