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The Massanutten sandstone is a Silurian-aged passive margin deposit that is correlative to the Tuscarora Formation of the western Valley & Ridge province. A bed is exposed here in a subvertical orientation along the Woodstock Tower Road, near its summit. Perspective is looking across strike to the west-northwest. Trace...
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- Klingle Valley metaconglomerate, Laurel Formation, Rock Creek Shear Zone, Washington, DC by Callan Bentley
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Strained metaconglomerate that crops out in a stream in Klingle Valley, DC. Note the prominent granite intrusion. Compare with this annotated view: gigapan.com/gigapans/128969 Or view them both simultaneously in the comparative viewer from GIGAmacro.com: www.gigamacro.com/gigamacro_viewer/gigama
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- Contact between Fauquier Formation marble and Catoctin Formation greenstone, near Lime Kiln Road, Virginia by Callan Bentley
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The contact between the metasedimentary Fauquier Formation (uppermost marble member) and the overlying metavolcanic Catoctin Formation is exposed in an abandoned quarry north of Aldie, Virginia, across Goose Creek from Lime Kiln Road. The nature of this contact (is it conformable? does it show primary or tectonic struc...
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Kilbourne Hole is a maar crater in southern New Mexico. Compare with this non-annotated view: gigapan.com/gigapans/129481
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Outcrop of the late-Ordovician-aged Martinsburg Formation (turbidites/flysch) shed off the Taconian Orogen to the east into the adjacent deep marine basin. The strata were later tilted and cleaved during Alleghanian mountain-building.
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- Contact between Fauquier Formation marble and Catoctin Formation greenstone, near Lime Kiln Road, Virginia by Callan Bentley
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The contact between the metasedimentary Fauquier Formation (uppermost marble member) and the overlying metavolcanic Catoctin Formation is exposed in an abandoned quarry north of Aldie, Virginia, across Goose Creek from Lime Kiln Road. The nature of this contact (is it conformable? does it show primary or tectonic struc...
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- 294
- Explore Score
- 31
- Contact between Fauquier Formation marble and Catoctin Formation greenstone, near Lime Kiln Road, Virginia by Callan Bentley
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The contact between the metasedimentary Fauquier Formation (uppermost marble member) and the overlying metavolcanic Catoctin Formation is exposed in an abandoned quarry north of Aldie, Virginia, across Goose Creek from Lime Kiln Road. The nature of this contact (is it conformable? does it show primary or tectonic struc...
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- 240
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- 31
- Outcrop at the intersection of Fort Valley Road and Ramsey Road, Fort Valley, Virginia by Callan Bentley
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This area is mapped by Rader & Biggs (1976) as Mahantango Formation. Note pencil cleavage on breakdown slopes. Bedding is discernible in the most cleanly-exposed portion of the outcrop (center). Structural orientations (right-hand rule): Bedding: 205°, 25° Cleavage: 021°, 90° Image made as part of the Mid...
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- 314
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This is a "doomed" outcrop of the Miocene-aged (~14 Ma) Calvert Formation on the western shore of Chesapeake Bay. "Bed 14," a distinctive fossiliferous unit, is exposed here thanks to the effort of one of the local landowners. In a month or two, this entire outcrop will be permanently covered with "hard stabilization" ...
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Kilbourne Hole is a maar crater in southern New Mexico.
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