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Filters: Tags: El Dorado County, California (X)

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Album caption: South Fork of American River, at Coloma, California, (where gold was first discovered). Picture by J.G. Staack, Topographer, spring of 1912, while making profile survey. Handwritten notes on album caption: Placerville quad, El Dorado County, Calif. Index card: Bar at Coloma where gold was first found. El Dorado County, Calfornia. 1912.
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Bedrock surface exposed by removal of auriferous gravels, old hydraulic mine near Placerville. The surface has the form of a stream valley ("channel" of the miners), and this valley trends differently from the modern drainage. El Dorado County, California. 1905.
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The section is breccia above, gravel below. On the floor of the mine are stacked large boulders.
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Album caption: Junction of Middle Fork of American River and Rubicon River, picture by T.P. Pendleton, assitant topographer, while making profile survey in 1912. Calif. Handwritten notes on album caption: Placerville quad Index card: Panorama with 356. El Dorado County/Placer County, California. 1912.
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Bedrock surface exposed by removal of auriferous gravels, old hydraulic mine near Placerville. El Dorado County, California. 1905.
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Album caption: South Fork of American River, California, just below Mosquito bridge. Picture taken by J.G. Staack, topographer, spring of 1912 while making profile survey. Handwritten notes on album caption: Placerville quad, El Dorado County, Calif. Index card: South Fork American River below Mosquito bridge. El Dorado County, California. 1912.
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Bedrock in foreground, gravels beyond. The terrace is a resurrected land surface on which the gravels were deposited.
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Birds eye view of Placerville. The upland, except the hill at right, belongs to a peneplain younger than the auriferous gravels. The distant profile is the top of a lava bed. El Dorado County, California. 1905.
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Vegetal cover of trees, brushes, and grass; and accordant slopes. Near Placerville. A trail has caused an arroyo at left, and other (stock) trails are seen in middle distance. The timber was cut from this area several decades ago. El Dorado County, California. 1905.
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The section is breccia above, gravel below. On the flow of the mine are stacked large boulders.
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Album caption: South Fork of American River, intake at Natomas consolidated. Picture by J.G. Staack, topographer, spring of 1912, while making profile survey. California. Handwritten notes on album caption: Sacramento quad, El Dorado County, Calif. No index card
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Working face of old hydraulic mine at Placerville. Gravels capped by volcanic breccia. El Dorado County, California. 1905.
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Westward from hill near Placerville. The middle distance is occupied by a peneplain, to which the extreme distance is monad-nock. Old hydraulic mines in foreground. El Dorado County, California. 1905.
map background search result map search result map Birds eye view of Placerville. El Dorado County, California. 1905. Peneplain near Placerville. El Dorado County, California. 1905. South Fork of American River, downstream from Coloma. El Dorado County, California. 1905. South Fork of American River, upstream from Coloma. El Dorado County, California. 1905. Statue of Marshall, discoverer of gold, Coloma. El Dorado County, California. 1905. Vegetal cover of trees, brushes, and grass; and accordant slopes. El Dorado County, California. 1905. Land slopes near Placerville. El Dorado County, California. 1905. Land slopes near Placerville. El Dorado County, California. 1905. Middle Fork of American River and Rubicon River junction, El Dorado County, California. 1912. Intake at Natomas Consolidated, El Dorado County, California. 1912. Coloma, South Fork of American River, El Dorado County, California. 1912. South Fork American River below Mosquito bridge, El Dorado County, California. 1912. OFR 34-64 - Investigation of the Indian Diggins Limestone Deposit, El Dorado County, California. 1964. Birds eye view of Placerville. El Dorado County, California. 1905. Peneplain near Placerville. El Dorado County, California. 1905. South Fork of American River, downstream from Coloma. El Dorado County, California. 1905. South Fork of American River, upstream from Coloma. El Dorado County, California. 1905. Statue of Marshall, discoverer of gold, Coloma. El Dorado County, California. 1905. Vegetal cover of trees, brushes, and grass; and accordant slopes. El Dorado County, California. 1905. Land slopes near Placerville. El Dorado County, California. 1905. Land slopes near Placerville. El Dorado County, California. 1905. Intake at Natomas Consolidated, El Dorado County, California. 1912. Coloma, South Fork of American River, El Dorado County, California. 1912. South Fork American River below Mosquito bridge, El Dorado County, California. 1912. OFR 34-64 - Investigation of the Indian Diggins Limestone Deposit, El Dorado County, California. 1964. Middle Fork of American River and Rubicon River junction, El Dorado County, California. 1912.