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Eldorado Springs, looking westward up the canyon, showing hills of hard massive red sandstone of the Fountain and Ingleside formations standing nearly vertical where cut by Eldorado Creek. Boulder County, Colorado. 1922. Plate 4-A in U.S. Geological Survey. Professional paper 149. 1927.
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North wall of gap at Ingleside; showing limestone and red cross-bedded sandstone in the Ingleside formation, the covered slope at the left, is occupied by red sandstone of the lower member of the Ingleside formation, here shaly and soft, and the Fountain arkose. Larimer County, Colorado. 1922. Plate 9-A in U.S. Geological Survey. Professional paper 149. 1927.
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Creamy sandstone at Morrison, compare views of Lyons sandstone (lwt01770, lwt01771, or lwt01772) with which the creamy sandstone has been erroneously correlated. Jefferson County, Colorado. 1922. Plate 7-B in U.S. Geological Survey. Professional paper 149. 1927.
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Lower part of Sundance formation south of Boxelder Creek, showing the basal cross- bedded sandstone and the overlying limestones and ripple-marked sandstones. Larimer County, Colorado. 1922. Plate 24-A in U.S. Geological Survey. Professional paper 149. 1927.
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Fountain arkose west of Loveland: showing west face of hogback ridge exposing arkose below and dark-red sandstone cliff of the lower member of the Ingleside formation at the crest, separated by an unconformity (?). Larimer County, Colorado. 1922. Plate 8-B in U.S. Geological Survey. Professional paper 149. 1927.
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Ridges in Thompson Canyon west of Loveland; showing rocks correlated by the writer with the Dakota group at Bellvue- the lower sandstone at the left, above a boulder covered slope of Morrison shale; the middle shale, between the two ridges; and the upper sandstone, at the right. The lower shale and middle sandstone are not exposed here. Larimer County, Colorado. 1922. Plate 29-B in U.S. Geological Survey. Professional paper 149. 1927. Plate 1-A in U.S. Geological Survey. Bulletin 751. 1925.
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North wall of Soldier Canyon, near Loveland; showing at the left the sandstone, 36 feet thick, correlated by the writer with lower sandstone of the Dakota group at Bellvue; overlain by the lower variegated shale 32 feet (for scale note horses on slope); the middle sandstone 12 feet; the upper shale 234 feet; and the upper sandstone, 41 feet, at the crest of the ridge. Larimer County, Colorado. 1922. Plate 29-A in U.S. Geological Survey. Professional paper 149. 1927.
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North wall of Boxelder Canyon at Greenacre ranch; showing Sundance sandstone resting on orange colored sandstone probably of the Jelm formation, and this on evenly stratified beds of the Lykins formation. Larimer County, Colorado. 1922. Plate 26-B in U.S. Geological Survey. Professional paper 149. 1927.
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Details of sandstone east of Lyons, that is correlated with the upper sandstone of the Dakota group at Bellvue; showing a hard quartzose layer resting on carbonaceous shaly sandstone. The lower dark colored material is full of small fragments of charcoal and impressions of twigs and variety of plant debris. Boulder County, Colorado. 1922. Plate 31-B in U.S. Geological Survey. Professional paper 149. 1927. Plate 3-A in U.S. Geological Survey. Bulletin 751. 1925.
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Lyons sandstone at Lyons; the face shows sharp boundaries between groups of cross- bedded layers and the truncation of the older layers before the younger ones were laid down, thus forming an angular unconformity in miniature. Boulder County, Colorado. 1922. Plate 17-C in U.S. Geological Survey. Professional paper 149. 1927.
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Near view of the 8-foot sandstone shown in photo 1347, showing ripple marked face exposed by the removal of shale. Jefferson County, Colorado. 1922. Plate 32-C in U.S. Geological Survey. Professional paper 149. 1927. Plate 6-B in U.S. Geological Survey. Bulletin 751-A. 1925.
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Red bed in the north wall of (Big) Thompson Canyon west of Loveland; showing red Fountain arkose at extreme left, unconformably below a cliff of dark red sandstone formed by the basal member of the Ingleside formation, relatively soft shaly sandstone corresponding in position to the limestone member of the Ingleside, and a capping of Lyons sandstone at the extreme right. Larimer County, Colorado. 1922. Plate 9-B in U.S. Geological Survey. Professional paper 149. 1927.
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Two miles north of Owl Creek; showing orange-colored sandstone which probably corresponds to the Jelm formation; light-pink cross-bedded sandstone of the basal Sundance; thin bedded cherty limestone, ripple marked sandstone, and shale of the lower marine member of the Sundance; the Morrison formation; and at the top of the ridge the beds correlated with the Dakota group at Bellvue, Larimer County, Colorado. 1922. Plate 25-A, with graphics, in U.S. Geological Survey. Professional paper 149. 1927.
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Cottonwood Canyon west of Loveland; showing the pink to orange colored cross-bedded sandstones of the lower Sundance; possibly including some of the Jelm, overlain by 210 feet of cherty limestone with thin beds of shale, partly or wholly of the Sundance. The Morrison formation appears at the right above the light colored limestone. Larimer County, Colorado. 1922. Plate 25-B, with graphics, in U.S. Geological Survey. Professional paper 149. 1927.
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Steamboat Rock, Livermore quadrangle; showing the lower sandstone member of the Ingleside formation resting unconformably on Fountain arkose which occupies the debris covered slope at left. Larimer County, Colorado. 1922. Plate 10-B, with graphics, in U.S. Geological Survey. Professional paper 149. 1927.
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Conglomerate of the lower sandstone of the Dakota group about 2 miles north of Bellvue; resting unconformably on Morrison shale. Larimer County, Colorado. 1922. Plate 28-B, with graphics, in U.S. Geological Survey. Professional paper 149. 1927.
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Fountain arkose in Roxbury Park, southwest of Denver; because of irregularity in constitution and hardness the upturned beds are here eroded into a variety of picturesque monuments. Douglas County, Colorado. 1922. Plate 7-A in U.S. Geological Survey. Professional paper 149. 1927.
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Lyons sandstone at Lyons; the cross-bedding extends from the top nearly to the bottom of the formation, and the trees stand on the slightly eroded upper surface, or bedding plane. Boulder County, Colorado. 1922. Plate 17-A in U.S. Geological Survey. Professional paper 149. 1927.