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Album caption: Rock pinnacles of deeply weathered piles of teetering rock, interpreted as not to have been covered by the icefield glaciation, rising 10 to 20 m above the smooth glaciated surface. Divide is above rock basin south of Tendoy Lake, looking south. Published as figure 19A.
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Album caption: Stereoscopic pair showing Albertella from lower member of the Silver Hill Formation, north rim of cirque east of Black Lion Mountain, at 9,600 ft elevation. Published as figure 6D.
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Album caption: Miarolite cavity filed with quartz, two feldspars, and biotite. Sample is loose block south of Tendoy Lake in the Uphill Creek Granodiorite. Published as figure 28
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Album caption: View northeast from same spot as figure 19A, with Granite Mountain in background. In contrast to the pinnacles, the smooth surface of most the divide area has been glacially polished. Published as figure 19B.
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Album caption: Swarm of mafic dikes in Grayling Lake Granite, south wall of cirque above Green Lake. Dikes occupy north-south fracture system. Man (just to right of center foreground) is standing upright. Published as figure 26.
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Abum caption: Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic allochton. Photomicrographs of chloritoid (CD)-biotite (Bt) assemblages. C, Sample 103-1A, with garnet. Southwestern Massachusetts and adjacent Connecticut and New York. ca. 1966. Published as figure 16-C in U.S. Geological Survey. Professional paper 1113. 1981.
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Album caption: Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic allochton. Photomicrographs of triply zone plagioclase from (A) saple 3-3 (cross-polarized light). Southwestern Massachusetts and adjacent Connecticut and New York. ca. 1966. Published as figure 9-A in U.S. Geological Survey. Professional paper 1113. 1981.
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Abum caption: Glendale, Montana in 1983. Bedrock geology of the Vipond Park 15-minute, Stine Mountain 7 1/2-minute, and Maurice Mountain 7 1/2-minute quadrangles, Pioneer Mountains, Beaverhead County, Montana. Geological Survey (U.S.) Bulletin 1625. 1988. Published as frontispiece, bottom photograph.
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Abum caption: Glendale, Montana, in 1883. This old drawing of Glendale, viewed from the southeast, shows the town in more thriving days. Center of activity then was the smelter (left center) that processed the ore material mined at Hecla and vicinity. Only the chimney, a few shells, and cellar holes of buildings remain in the town. Trapper Creek valley extends from upper left to lower right in the perspective. The foreground is underlain by Cretaceous sedimentary rocks of the Colorado Group. The hills in the upper right part of the picture are south of Dry Hollow Gulch; from left to right the peaks against the skyline are at 6,500 ft, 6,700 ft, and 6,628 ft elevation on the Vipond Park topographic quadrangle...
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Album caption: Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic allochton. Photomicrographs showing (B) late plagioclase including folded foliation defined by dust trains; the sigmoidal fold is in a single crystal, sample 340-1 (plane-polarized light). Southwestern Massachusetts and adjacent Connecticut and New York. ca. 1966. Published as figure 11-B in U.S. Geological Survey. Professional paper 1113. 1981.
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Album caption: Proterozoic X gneiss, rim of the west sidewall, cirque north of Sheep Mountain. Notice at least three sets of planar features. Published as figure 2A.
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Album caption: Contact between Kootenai Formation and Colorado Group, on north side of Trapper Creek, south slope of 6,484-foot peak. Visible relief is about 500 ft9150m) [sic]. Top of the Kootenai is a gray gastropod limestone, succeeded by a massive (5--10 m) greywacke bed of the Colorado. Contact is just above right-hand talus slide marked by arrow. Published as figure 14A.
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Album caption: Chert in lower member of the Phosphoria Formation, cliffs in sec. 10, T. 2 S., R. 10 W., east of Devils Hole north of Canyon Creek. Note lamination in dolostone, caused by quartz sand in crossbeds, that passes as a ghost lamination into the chert. Published as figure 12.
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Album caption: Mazama ash in colluvium, borrow pit west of Interstate 15 south of Butte, at mileage 118.9. The light ash layer is about 10 cm thick. Published as figure 22.
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Album caption: Devonian Jefferson Dolostone thrust upon the Mississippian Lodgepole Limestone. Location is west slope of 8,938-foot peak west of Lion Mountain. The Jefferson is highly brecciated and yellow, typical of that below the main thrust of Proterozoic quartzite at head of Gold Creek; its presence here suggests that this thrust of extended this far east. Man’s hand is parallel to bedding in the Lodgepole. Published as figure 24.
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Album caption: Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic allochton. Photomicrographs of cummintonite (Cum) assemblages for samples (B) 487-2 (plane-polarized light). Other minerals present are chlorite (Ch), biotite (Bt), and garnet (Ga). Southwestern Massachusetts and adjacent Connecticut and New York. ca. 1966. Published as figure 6-B in U.S. Geological Survey. Professional paper 1113. 1981.
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Album caption: Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic allochton. Photomicrographs of cummintonite (Cum) assemblages for sample (A) 170-1 (plane-polarized light). Southwestern Massachusetts and adjacent Connecticut and New York. ca. 1966. Published as figure 6-A in U.S. Geological Survey. Professional paper 1113. 1981.
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Album caption: Lodgment till, Yanks Pasture along Trapper Creek. Slope in lower left corner is part of lateral moraine that borders the stream course and is younger than the lodgment till. View is to southwest. Published as figure 17.
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Album caption: Frost polygons, north slope of Sheep Mountain, looking northeast toward rampart of conglomerate talus above the cliffs. The polygons are about 3 m across. Published as figure 21.
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Album caption: Thick-bedded quartzite beds of the sequence of Maurice Mountain, showing multiple slumps that involved crossbedded strata. Loose block at base of cliffs west of lowest lake at head of Grouse Creek. Published as figure 3A.


map background search result map search result map Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic allochton.  Southwestern Massachusetts and adjacent Connecticut and New York.  circa 1966. Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic allochton. Southwestern Massachusetts and adjacent Connecticut and New York.  circa 1966. Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic allochton. Southwestern Massachusetts and adjacent Connecticut and New York. circa 1966. Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic allochton.  Southwestern Massachusetts and adjacent Connecticut and New York.  circa 1966. Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic allochton.  Southwestern Massachusetts and adjacent Connecticut and New York.  circa. 1966. Glendale, Montana, in 1883. Glendale, Montana in 1983. Proterozoic X gneiss, rim of the west sidewall, cirque north of Sheep Mountain.  Beaverhead County, Montana.  nd Thick-bedded quartzite beds of the sequence of Maurice Mountain, showing multiple slumps that involved crossbedded strata.  Beaverhead County, Montana.  nd. Stereoscopic pair showing Albertella from lower member of the Silver Hill Formation, north rim of cirque east of Black Lion Mountain, at 9,600 ft elevation.  Beaverhead County, Montana.  nd. Chert in lower member of the Phosphoria Formation, cliffs in sec. 10, T. 2 S., R. 10 W., east of Devils Hole north of Canyon Creek. Beaverhead County, Montana.  nd. Contact between Kootenai Formation and Colorado Group, on north side of Trapper Creek, south slope of 6,484-foot peak.  Beaverhead County, Montana.  nd. Lodgment till, Yanks Pasture along Trapper Creek.  Beaverhead County, Montana.  nd. Rock pinnacles of deeply weathered piles of teetering rock, interpreted as not to have been covered by the icefield glaciation, rising 10 to 20 m above the smooth glaciated surface.  Beaverhead County, Montana.  nd. View northeast from same spot as figure 19A, with Granite Mountain in background.  Beaverhead County, Montana.  nd. Frost polygons, north slope of Sheep Mountain, looking northeast toward rampart of conglomerate talus above the cliffs. Beaverhead County, Montana.  nd. Mazama ash in colluvium, borrow pit west of Interstate 15 south of Butte, at mileage 118.9. Beaverhead County, Montana.  nd. Devonian Jefferson Dolostone thrust upon the Mississippian Lodgepole Limestone.  Beaverhead County, Montana.  nd. Swarm of mafic dikes in Grayling Lake Granite, south wall of cirque above Green Lake.  Beaverhead County, Montana.  nd. Miarolite cavity filed with quartz, two feldspars, and biotite.  Sample is loose block south of Tendoy Lake in the Uphill Creek Granodiorite.  Beaverhead County, Montana.  nd. Glendale, Montana, in 1883. Glendale, Montana in 1983. Proterozoic X gneiss, rim of the west sidewall, cirque north of Sheep Mountain.  Beaverhead County, Montana.  nd Thick-bedded quartzite beds of the sequence of Maurice Mountain, showing multiple slumps that involved crossbedded strata.  Beaverhead County, Montana.  nd. Stereoscopic pair showing Albertella from lower member of the Silver Hill Formation, north rim of cirque east of Black Lion Mountain, at 9,600 ft elevation.  Beaverhead County, Montana.  nd. Chert in lower member of the Phosphoria Formation, cliffs in sec. 10, T. 2 S., R. 10 W., east of Devils Hole north of Canyon Creek. Beaverhead County, Montana.  nd. Contact between Kootenai Formation and Colorado Group, on north side of Trapper Creek, south slope of 6,484-foot peak.  Beaverhead County, Montana.  nd. Lodgment till, Yanks Pasture along Trapper Creek.  Beaverhead County, Montana.  nd. Rock pinnacles of deeply weathered piles of teetering rock, interpreted as not to have been covered by the icefield glaciation, rising 10 to 20 m above the smooth glaciated surface.  Beaverhead County, Montana.  nd. View northeast from same spot as figure 19A, with Granite Mountain in background.  Beaverhead County, Montana.  nd. Frost polygons, north slope of Sheep Mountain, looking northeast toward rampart of conglomerate talus above the cliffs. Beaverhead County, Montana.  nd. Mazama ash in colluvium, borrow pit west of Interstate 15 south of Butte, at mileage 118.9. Beaverhead County, Montana.  nd. Devonian Jefferson Dolostone thrust upon the Mississippian Lodgepole Limestone.  Beaverhead County, Montana.  nd. Swarm of mafic dikes in Grayling Lake Granite, south wall of cirque above Green Lake.  Beaverhead County, Montana.  nd. Miarolite cavity filed with quartz, two feldspars, and biotite.  Sample is loose block south of Tendoy Lake in the Uphill Creek Granodiorite.  Beaverhead County, Montana.  nd. Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic allochton.  Southwestern Massachusetts and adjacent Connecticut and New York.  circa 1966. Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic allochton. Southwestern Massachusetts and adjacent Connecticut and New York.  circa 1966. Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic allochton. Southwestern Massachusetts and adjacent Connecticut and New York. circa 1966. Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic allochton.  Southwestern Massachusetts and adjacent Connecticut and New York.  circa 1966. Metamorphic mineral assemblages of slightly calcic pelitic rocks in and around the Taconic allochton.  Southwestern Massachusetts and adjacent Connecticut and New York.  circa. 1966.