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Roadcut in shales south of Wilson Lake, Kansas. Can you identify it's proper place in the stratigraphy (www.kgs.ku.edu/Publications/Bulletins/189/09_meso.html#CRET
) of the region?-
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Cross-sectional view of folded Martinsburg Formation beds . On the left (south), the bedding is oriented 030°, 38° (right hand rule). On the right (north), it's oriented 245°, 30° (right hand rule).
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Acadian turbidites, folded during the Alleghanian Orogeny. Look for slickensides, trace fossils, turbidity current structures. For more information on the Brallier, check out this map of the location: ngmdb.usgs.gov/ngm-bin/pdp/zui_viewer.pl?id=8643

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Cambrian-aged Harpers Formation meta-mudstone exposed on the property of Arlington, Virginia's outdoor education facility, the Phoebe Hall Knipling Outdoor Lab.
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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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Here is the base of the Foreknobs section exposed along rt 50 near Chambersville Virginia on the east limb of the Mt Pleasent Syncline. Here is shown the lowest massive marine sandstone which seperates itself from silty/sandy turbidites of the Brallier Formation. This Image is part of the Mid Atlantic Geo-Imagery Col...
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This is a subvertical bedding plane (220° / 80°, right hand rule) of the late Ordovician Martinsburg Formation, showing the bottom of a turbidite bed. Several features are visible in this bottom-up perspective.
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This is a subvertical bedding plane (220° / 80°, right hand rule) of the late Ordovician Martinsburg Formation, showing the bottom of a turbidite bed. Several features are visible in this bottom-up perspective.
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- 239
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- 32
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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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- 188
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- 31
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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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Stats
- Favorites
- 0
- Comments
- Snapshots
- Total Views
- 239
- Explore Score
- 30

