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Sedimentary rocks deposited in an ancient lake are exposed in cliffs in Indian Canyon, Utah. The rocks form white to brown thinly bedded layers of white limestone and brown to red shale and sandstone that were deposited about 40 million years ago. There are many oil wells in this area that produce from the lake beds, a...
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This photo shows two large river channel sandstone lenses (see snapshot 1) that occur in the thinly bedded sedimentary rocks of ancient Lake Uinta, in the Uinta Basin of Utah. The sandstone lenses formed when the shoreline retreated and rivers advanced over the lake sediments. The lake then returned and the river chann...
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