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Gigapans

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  1. 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 Will open in a new tab or window

  2. A lovely exposure (though rather harshly lit) of the contact between two Cambro-Ordovician limestones in the Shenandoah Valley. Geologic map of the site is here: ngmdb.usgs.gov/ngm-bin/pdp/zui_viewer.pl?id=14868 Will open in a new tab or window The same contact can be seen in the vicinity of Strasburg, Virginia, here: www.gigapan.com/gi...

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      41

  3. 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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      142
      Explore Score
      33

  4. 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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      186
      Explore Score
      31

  5. 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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      161
      Explore Score
      36

  6. The Massanutten Sandstone is a Silurian-aged quartz arenite that crops out in the center of the greater Shenandoah Valley. It is resistant to erosion, and holds up the ridges of the Massanutten mountain system. To explore the outcrop this was collected from, click here: gigapan.com/gigapans/113759 Image...

  7. Cross-sectional view of folded Martinsburg Formation beds (XXX°, XX° right hand rule).

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      148
      Explore Score
      25

  8. 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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      168
      Explore Score
      37

  9. Cross-sectional view of inclined Martinsburg Formation beds (020°, 62° right hand rule). Take a look and ask yourself: What's the structure doing here? :)

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      102
      Explore Score
      28

  10. Cross-sectional view of subvertical Martinsburg Formation beds (220°, 80° right hand rule).

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      98
      Explore Score
      25
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