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Raw data were collected in Shenandoah National Park during summer 2012. Air and temperature data were collected using temperature loggers at several stations throughout the park. These data were used in the publication of the manuscript "Accounting for groundwater influence on headwater stream thermal sensitivity to climate change" through the journal Ecological Applications. Water temperature data were collected at all 78 reach locations during the summer of 2012 (23 June–7 September). Temperature was measured every hour with a logger.
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Shenandoah National Park, Virginia. The upper falls in Whiteoak Canyon is one of the many waterfalls formed where streams cross the lava flow of the Catoctin Formation. Generally falls occur where streams cross massive greenstone in the middle of the flow. Steps between falls occur where streams cross sheared breccia zones between flows. Figure 6, U.S. Geological Survey Bulletin 1265.
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This database contains hourly water and air temperature data from 120 site locations within 17 watersheds in Shenandoah National Park, Virginia between June 23,2012 and October 25, 2016. The database includes three separate table files (i.e, entities) in csv format: 1) Water temperature data, 2) air temperature data, and 3) site location data. All temperature data were collected using HOBO Pro V2 thermographs (accuracy = 0.2 degrees Celsius, drift = <0.1 degrees Celsius per year per year). These raw data were summarized to mean daily air and water temperatures for the analysis used in Johnson et al. Johnson, Z.C., Snyder, C.D. and Hitt, N.P., 2017, Landform features and seasonal precipitation predict shallow groundwater...
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This map depicts 25 USNVC vegetation association classes and groups for Shenandoah National Park developed from AVIRIS hyperspectral imagery, ASTER multispectral imagery and topographic modeling (version 2.0b). Overall accuracy of this map is 60.5% as determined from 703 accuracy assessment field plots.
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Shenandoah National Park, Virginia. Sawed slab of amygdaloid breccia. Slab is from the outcrop on the south side of the road about 500 feet southeast of Big Meadows Lodge. The angular blocks are probably pieces of frothy lava crust that formed at the top of the flow. The crust was broken by continued movement of the still-molten lava beneath, and jumbled pieces were rafted along and were eventually frozen in place when the flow came to rest and solidified. During later metamorphism the amygdules and some of the interstices between the blocks were filled with white quartz and yellow-green epidote. Locally, part of the rock has been altered to epidosite, a fine- grained light-green aggregate of epidote and quartz....
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Shenandoah National Park, Virginia. Mud-lump breccia in the outcrop along the Appalachian Trail at the north end of the base of Little Stony Man Cliffs. Lumps of hard red argillite stand out as knots on the weathered surface. Light-gray streaks are irregular wisps of silvery phyllite. Matrix is fine- grained schistose greenstone. Figure 13, U.S. Geological Survey Bulletin 1265.
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Shenandoah National Park, Virginia. Schistose greenstone along the Appalachian Trail at the base of Little Stony Man Cliffs. Here, a zone of breccia and schistose greenstone marks the boundary between the second and third flows above the base of the Catoctin Formation. The outcrop is approximately 3 feet high. Figure 7, U.S. Geological Survey Bulletin 1265.
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Shenandoah National Park, Virginia. Blue Ridge, viewed from the west. The flat fertile valley floor (foreground) is underlain by limestone of the Paleozoic age capped by terrace gravel. The low wooded foothills (middle distance) are underlain by steeply dipping quartzite and shale of the Chilhowee Group. The main mass of the Blue Ridge is composed of granitic basement rocks, but the highest part of the ridge is capped by greenstone of the Catoctin Formation. Photo by U.S. National Park Service. Figure 1, U.S. Geological Survey Bulletin 1265.
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Shenandoah National Park, Virginia. Columnar jointing in greenstone. Large column along the Appalachian Trail about 200 feet south of Little Stony Man parking area. The column is cut by cleavage which dips east, away from the observer. The segment of the coluiai above each cleavage plane is offset westward from the segment beneath as a result of movement during formation of the cleavage. Column is approximately 2 feet in diameter. Figure 9 (right), U.S. Geological Survey Bulletin 1265.
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Shenandoah National Park, Virginia. Greenstone dike in basement rocks. Dike on Ridge Trail, Old Rag Mountain, about O.4 mile northeast of the summit. Wallrock is Old Rag Granite of Furcron (1934). Figure 15 (left), U.S. Geological Survey Bulletin 1265.
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Shenandoah National Park, Virginia. Columnar jointing in greenstone. Small wavy columns at the top of the cliff above the Appalachian Trail about 0.15 mile north of Hawksbill Gap. Figure 9 (left), U.S. Geological Survey Bulletin 1265.
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Shenandoah National Park, Virginia. Sandstone dikes in greenstone. Outcrop is on the north side of Skyline Drive at mile 47.3 on the south side of Hawksbill Mountain. Sandstone (light gray) displays faint subhorizontal bedding. Greenstone (darker gray) displays a dark chloritic border at the edge of the dike. The knife is about 3 inches long. Figure 11, U.S. Geological Survey Bulletin 1265.
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A combination of long-term daily temperature records and depth to bedrock measurements were used to parametrize one-dimensional models of shallow aquifer vertical heat transport in Shenandoah National Park, VA, USA. Depth to bedrock can directly influence shallow aquifer flow and thermal sensitivity, but is typically ill-defined along the stream corridor in steep mountain catchments. We employed rapid, cost-effective passive seismic measurements to evaluate the variable thickness of the shallow colluvial and alluvial aquifer sediments along a headwater stream supporting coldwater-dependent brook trout (Salvelinus fontinalis) in Shenandoah National Park. The methods are fully documented in the associated journal...
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Shenandoah National Park, Virginia. Greenstone dike in basement rocks. Dike at the west side of the north portal of Marys Rock Tunnel, mile 32.1, Skyline Drive. Wallrock is granodiorite. Figure 15 (right), U.S, Geological Survey Bulletin 1265.
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Shenandoah National Park, Virginia. Franklin Cliffs, viewed from Big Meadows Campground, showing the prominent cliffs marking the outcrops of the second and third flows above the base of the Catoctin Formation. Note the change in attitude of flows near the fault. Figure 5, U.S. Geological Survey Bulletin 1265.
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Album caption: The summit profile of Stony Man (altitude 4,010 feet) on the crest of the Blue Ridge and the Little Stony Cliffs (left) are outcrops of ancient lava flows of the Catoctin Formation. Shenandoah National Park. Stony Man quadrangle. Madison County, Virginia. n.d. Published as frontispiece, U.S. Geological Survey Bulletin 1265 (1969).
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Shenandoah National Park, Virginia. Sawed slab of porphyritic greenstone. Slab is from the outcrop on the south side of Skyline Drive at mile 80.9, about 100 yards east of Big Run Overlook in the southern section of the park. Angular to slightly rounded phenocrysts of plagioclase (now albite) occur in the matrix of finer grained albite, chlorite, and epidote displaying relict basaltic fabric. The phenocrysts in this specimen are somewhat larger than those in the porphyritic flows in the Big Meadows-Stony Man Area, but the texture is typical. Specimen collected by Professor Ernst Cloos, The Johns Hopkins University. Photo by J.P. Owens. Figure 14, U.S. Geological Survey Bulletin 1265.


    map background search result map search result map The summit profile of Stony Man (altitude 4,010 feet). Shenandoah National Park. Madison County, Virginia. n.d. Shenandoah National Park, Virginia. Blue Ridge, viewed from the west. The flat fertile valley floor (foreground) is underlain by limestone of the Paleozoic age capped by terrace gravel. Shenandoah National Park, Virginia. Franklin Cliffs, viewed from Big Meadows Campground, showing the prominent cliffs marking the outcrops of the second and third flows above the base of the Catoctin Formation. Shenandoah National Park, Virginia. The upper falls in Whiteoak Canyon is one of the many waterfalls formed where streams cross the lava flow of the Catoctin Formation. Shenandoah National Park, Virginia. Schistose greenstone along the Appalachian Trail at the base of Little Stony Man Cliffs. Shenandoah National Park, Virginia. Columnar jointing in greenstone. Small wavy columns at the top of the cliff above the Appalachian Trail about 0.15 mile north of Hawksbill Gap. Shenandoah National Park, Virginia. Columnar jointing in greenstone. Large column along the Appalachian Trail about 200 feet south of Little Stony Man parking area. Shenandoah National Park, Virginia. Sandstone dikes in greenstone. Outcrop is on the north side of Skyline Drive at mile 47.3 on the south side of Hawksbill Mountain. Shenandoah National Park, Virginia. Mud-lump breccia in the outcrop along the Appalachian Trail at the north end of the base of Little Stony Man Cliffs. Shenandoah National Park, Virginia. Greenstone dike in basement rocks. Dike on Ridge Trail, Old Rag Mountain, about O.4 mile northeast of the summit. Shenandoah National Park, Virginia. Greenstone dike in basement rocks. Dike at the west side of the north portal of Marys Rock Tunnel, mile 32.1, Skyline Drive. Shenandoah National Park Vegetation Mapping Project - Spatial Vegetation Data Version 2.0b 2012 Air and Temperature Data from Shenandoah National Park Air-water temperature data for the study of groundwater influence on stream thermal regimes in Shenandoah National Park, Virginia Seismic data for study of shallow mountain bedrock limits seepage-based headwater climate refugia, Shenandoah National Park, Virginia Seismic data for study of shallow mountain bedrock limits seepage-based headwater climate refugia, Shenandoah National Park, Virginia 2012 Air and Temperature Data from Shenandoah National Park The summit profile of Stony Man (altitude 4,010 feet). Shenandoah National Park. Madison County, Virginia. n.d. Shenandoah National Park, Virginia. Blue Ridge, viewed from the west. The flat fertile valley floor (foreground) is underlain by limestone of the Paleozoic age capped by terrace gravel. Shenandoah National Park, Virginia. Franklin Cliffs, viewed from Big Meadows Campground, showing the prominent cliffs marking the outcrops of the second and third flows above the base of the Catoctin Formation. Shenandoah National Park, Virginia. The upper falls in Whiteoak Canyon is one of the many waterfalls formed where streams cross the lava flow of the Catoctin Formation. Shenandoah National Park, Virginia. Schistose greenstone along the Appalachian Trail at the base of Little Stony Man Cliffs. Shenandoah National Park, Virginia. Columnar jointing in greenstone. Small wavy columns at the top of the cliff above the Appalachian Trail about 0.15 mile north of Hawksbill Gap. Shenandoah National Park, Virginia. Columnar jointing in greenstone. Large column along the Appalachian Trail about 200 feet south of Little Stony Man parking area. Shenandoah National Park, Virginia. Sandstone dikes in greenstone. Outcrop is on the north side of Skyline Drive at mile 47.3 on the south side of Hawksbill Mountain. Shenandoah National Park, Virginia. Mud-lump breccia in the outcrop along the Appalachian Trail at the north end of the base of Little Stony Man Cliffs. Shenandoah National Park, Virginia. Greenstone dike in basement rocks. Dike on Ridge Trail, Old Rag Mountain, about O.4 mile northeast of the summit. Shenandoah National Park, Virginia. Greenstone dike in basement rocks. Dike at the west side of the north portal of Marys Rock Tunnel, mile 32.1, Skyline Drive. Air-water temperature data for the study of groundwater influence on stream thermal regimes in Shenandoah National Park, Virginia Shenandoah National Park Vegetation Mapping Project - Spatial Vegetation Data Version 2.0b