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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Crossing the Canyonlands section of the Colorado Plateau, the Colorado and Green Rivers are in deep colorful canyons in Jurassic, Triassic Permian and Pennsylvanian rocks. Looking up the Colorado River at The Loop about 6 miles above the junction of the Green River. The gorge is about 500 feet deep; the broad bench is underlain by the Permian (Cutler Formation), and no river gravels were found on it. In the distance, about 8 miles away, are the cliffs of the Triassic and Jurassic rocks, about 1,200 feet high. In early Miocene (about 25 million years ago) much or most of the canyonlands still were covered by Cretaceous shale (Mancos Shale) River deposits correlated with glacial deposits in the La Sal Mountains indicate...
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.
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Album caption and index card: Digging fossils at the Lamb Ranch. Littleton, Arapahoe County, Colorado. July 1961. Smithsonian River Basin Studies.


map background search result map search result map Fossil footprint on the Dakota Sandstone in Jefferson County, Colorado. October 16, 1966. Fossil footprint on the Dakota Sandstone in Jefferson County, Colorado. October 16, 1966.