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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 Data Release provides brook trout abundance records for pool habitats within 2 streams in Shenandoah National Park (Staunton River and Paine Run). The data were collected with 3-pass backpack electrofishing conducted during baseflow conditions between 2012-2021. This dataset enables spatial analysis of brook trout population responses to drought conditions.
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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. 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.


    map background search result map search result map The upper falls in Whiteoak Canyon at the Catoctin Formation. Shenandoah National Park, Virginia. No date. Schistose greenstone along the Appalachian Trail at the base of Little Stony Man Cliffs. Shenandoah National Park, Virginia. No date. Columnar jointing in greenstone. Shenandoah National Park, Virginia. No date. Brook trout abundance within pools of Staunton River and Paine Run in Shenandoah National Park from 2012-2021 Brook trout abundance within pools of Staunton River and Paine Run in Shenandoah National Park from 2012-2021 The upper falls in Whiteoak Canyon at the Catoctin Formation. Shenandoah National Park, Virginia. No date. Schistose greenstone along the Appalachian Trail at the base of Little Stony Man Cliffs. Shenandoah National Park, Virginia. No date. Columnar jointing in greenstone. Shenandoah National Park, Virginia. No date.