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Gigapans

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  1. Tonoloway Limestone exposed in the northwest wall of the "Old Derrick" Quarry, along Rt. 50, near Romney, WV. The quarry's late Silurian-aged peritidal carbonates were laid down in the Tippecanoe sea. Its strata primarily record a tidal flat environment, with conspicuous mudcracks, laminites, stromatolites, and sal...

  2. Tonoloway Limestone exposed in the northeast wall of the "Old Derrick" Quarry, along Rt. 50, near Romney, WV. The quarry's late Silurian-aged peritidal carbonates were laid down in the Tippecanoe sea. Its strata primarily record a tidal flat environment, with conspicuous mudcracks, laminites, stromatolites, and sal...

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  3. The Keyser Limestone is the lowest formation of the late Silurian to early Devonian Helderburg Group. It records stable platform deposits which accumulated in the quiet period between the Taconian and Acadian orogenies. This sample was collected and contributed by Dr. Michael Mengason.

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  4. This sample was contributed by Dr. Jay Kaufman of Univeristy of Maryland. Writes Dr. Kaufman: "This slab, which is about 3.5" across, comes from the ca. 3.5 billion-year-old Barberton Mountainland greenstone belt. Lapilli form during volcanic eruptions into a wet atmosphere by accretion around a central nucleus of ...

  5. This sample was provided by Dr. Jay Kaufman of the University of Maryland.

  6. Volcaniclastic breccia from the May 18, 1980 eruption of Mount. St. Helens. Found approximately four miles northwest of Toutle, WA. To explore this sample's translucent features, click here: gigapan.com/gigapans/124815 Sample collected and contributed by Lee Gonzalez.

  7. Precipitation lamellae from the Society Cliffs Formation on Baffin Island. This sample was provided by Dr. Jay Kaufman of the University of Maryland.

  8. Viewed from Frederick County (Opequon Creek is the dividing line), you can see strata of the Ordovician-aged Edinburg Formation limestones and shales. These anticlines and synclines formed during Alleghanian mountain-building in the late Paleozoic. Another set of folds is just upstream: gigapan.org/gigapans...

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  9. Here is a nice folded section of the Devonian-age Foreknobs formation West of Gore, Virginia along US rt 50. The Foreknobs Formation ( formerly known as the Chemung) is a mixed package of brownish red to grey sandstone siltstone shale and minor conglomerate

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  10. This is exposure is located on Va Rt 50 and features a nice section of the Devonian Foreknobs formation.

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