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| This view from the Harpers Corner Overlook Trail is overlooking a great monoclinal fold associated with the Mitten Park Fault along the canyon cut by the Green River. The confluence of the Green and Yampa Rivers is to the right. The Green River makes a great U-shaped bend near the confluence and flows around Steamboat Rock (partially shown here in the lower right side of the image). Sedimentary rocks exposed in this view range from late Precambrian and Cambrian age sandstones (older than 500 million years) exposed in the mountainsides to the left; the rocks to the center and the right are middle to late Paleozoic-age sedimentary formations, mostly sandstone with some limestone and shale—ranging in age from roughly about 400 to 250 million years. |
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