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Callan Bentley's Snapshots

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  1. Preferred alignment

    Snapshot Title: Preferred alignment
    Taken by: Callan Bentley

    Image: Porphyroblastic Turkish blueschist
    Image Owner: Callan Bentley



    Description:

    Some areas show a mineral lineation (on the plane of foliation) defined by aligned glaucophane (amphibole) needles.



  2. 1 cm

    Snapshot Title: 1 cm
    Taken by: Callan Bentley

    Image: Garnet sample
    Image Owner: Callan Bentley



    Description:

    One centimeter, to provided a sense of scale.



  3. Mn-oxide cement

    Snapshot Title: Mn-oxide cement
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    Breccia characterized by a higher proportion of subangular or subrounded clasts, a greater spacing between clasts (it's "matrix supported"), and a dark colored cement.



  4. Scale bar

    Snapshot Title: Scale bar
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    Courtesy of the Virginia Division of Geology and Mineral Resources.



  5. 1 cm

    Snapshot Title: 1 cm
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    sense of scale



  6. Siliceous cement

    Snapshot Title: Siliceous cement
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    Clasts weathering out in 3D.



  7. A collection

    Snapshot Title: A collection
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    of milled clasts



  8. Angular clasts

    Snapshot Title: Angular clasts
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    in close proximity to their neighbors.



  9. "Milled" clasts?

    Snapshot Title: "Milled" clasts?
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    Rounded shapes suggest tectonic "tumbling" and frictionally-induced abrasion of sharp corners.



  10. Clast alignment

    Snapshot Title: Clast alignment
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    significant? coincidence?



  11. Mn,Fe oxide cemented breccia

    Snapshot Title: Mn,Fe oxide cemented breccia
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    Greater spacing between clasts, floating in a dark-colored matrix.



  12. Siliceous-cemented breccia

    Snapshot Title: Siliceous-cemented breccia
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    Closer proximity of clasts, light-colored matrix between them.



  13. 1 inch

    Snapshot Title: 1 inch
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    to provide a sense of scale.



  14. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with centimeters marked along the side.



  15. Qu'est-ce que c'est?

    Snapshot Title: Qu'est-ce que c'est?
    Taken by: Callan Bentley

    Image: Foreknobs Formation- Hunting Ridge 2
    Image Owner: Alan Pitts



    Description:

    Alan, is this ball-&-pillow?



  16. Widmanstätten pattern!

    Snapshot Title: Widmanstätten pattern!
    Taken by: Callan Bentley

    Image: Meteorite: Seymchan Pallasite
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Pallasites are awesome.



  17. Trace fossils

    Snapshot Title: Trace fossils
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils (annotations only)
    Image Owner: Callan Bentley



    Description:

    Annotated with blue lines.
    To see the overlay (annotations + photo), click here: gigapan.com/gigapans/124295To see just the photo (with no annotations), click here:
    gigapan.com/gigapan...



  18. Trace fossils

    Snapshot Title: Trace fossils
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils (annotated)
    Image Owner: Callan Bentley



    Description:

    Annotated with blue lines.



  19. Shadow

    Snapshot Title: Shadow
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils (annotated)
    Image Owner: Callan Bentley



    Description:

    of the GigaPan EPIC Pro



  20. Scale pencil #2

    Snapshot Title: Scale pencil #2
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils (annotated)
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with centimeters marked on the side.



  21. Scale pencil #1

    Snapshot Title: Scale pencil #1
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils (annotated)
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with centimeters marked on the side.



  22. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils (annotated)
    Image Owner: Callan Bentley



    Description:

    The official scale bar of the Virginia Department of Geology and Mineral Resources. Inchest at top, centimeters at the bottom.



  23. Trace fossils

    Snapshot Title: Trace fossils
    Taken by: Callan Bentley

    Image: Massanutten Sandstone with trace fossils
    Image Owner: Callan Bentley



    Description:

    Bedding parallel



  24. Trace fossils

    Snapshot Title: Trace fossils
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils
    Image Owner: Callan Bentley



    Description:

    Bedding-parallel



  25. Shadow

    Snapshot Title: Shadow
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils
    Image Owner: Callan Bentley



    Description:

    of the GigaPan EPIC Pro



  26. Closer

    Snapshot Title: Closer
    Taken by: Callan Bentley

    Image: Massanutten Sandstone with trace fossils
    Image Owner: Callan Bentley



    Description:

    Another GigaPan was shot at closer range of this face. See it here: gigapan.com/gigapans/124277



  27. Scale pencil #2

    Snapshot Title: Scale pencil #2
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with centimeters marked on the side.



  28. Scale pencil #1

    Snapshot Title: Scale pencil #1
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with centimeters marked on the side.



  29. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils
    Image Owner: Callan Bentley



    Description:

    The official scale bar of the Virginia Department of Geology and Mineral Resources. Inchest at top, centimeters at the bottom.



  30. Scale pencil

    Snapshot Title: Scale pencil
    Taken by: Callan Bentley

    Image: Massanutten Sandstone with trace fossils
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with centimeters marked on the side.



  31. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Massanutten Sandstone with trace fossils
    Image Owner: Callan Bentley



    Description:

    The official scale bar of the Virginia Department of Geology and Mineral Resources. Inchest at top, centimeters at the bottom.



  32. Pencil cleavage

    Snapshot Title: Pencil cleavage
    Taken by: Callan Bentley

    Image: Outcrop at the intersection of Fort Valley Road and Ramsey Road, Fort Valley, Virginia
    Image Owner: Callan Bentley



    Description:

    Shale/slate splitting equally well along bedding and cleavage, dividing the rock up into rods.



  33. Bedding traces

    Snapshot Title: Bedding traces
    Taken by: Callan Bentley

    Image: Outcrop at the intersection of Fort Valley Road and Ramsey Road, Fort Valley, Virginia
    Image Owner: Callan Bentley



    Description:

    Bedding here strikes southwest and dips shallowly to the northwest.



  34. Scale pencil

    Snapshot Title: Scale pencil
    Taken by: Callan Bentley

    Image: Outcrop at the intersection of Fort Valley Road and Ramsey Road, Fort Valley, Virginia
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with centimeters marked on the side.



  35. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Outcrop at the intersection of Fort Valley Road and Ramsey Road, Fort Valley, Virginia
    Image Owner: Callan Bentley



    Description:

    The official scale bar of the Virginia Department of Geology and Mineral Resources. Inchest at top, centimeters at the bottom.



  36. Sense of scale

    Snapshot Title: Sense of scale
    Taken by: Callan Bentley

    Image: Martinsburg Formation, Millner Road and Bethel Road, Shenandoah County, Virginia
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with centimeters marked along the side.



  37. Sense of scale

    Snapshot Title: Sense of scale
    Taken by: Callan Bentley

    Image: Martinsburg Formation, Millner Road (near Deer Rapids Road), Shenandoah County, Virginia
    Image Owner: Callan Bentley



    Description:

    Pencil with cm demarcations on the side.



  38. Nice little antiform.

    Snapshot Title: Nice little antiform.
    Taken by: Callan Bentley

    Image: Folds and Faults in Foreknobs, Bergton Va
    Image Owner: Alan Pitts



    Description:

    Are these folds all associated with the overriding fault?



  39. Nucleus

    Snapshot Title: Nucleus
    Taken by: Callan Bentley

    Image: Ooids
    Image Owner: Robin Rohrback-Schiavone



    Description:

    A dark nucleus can be seen at the center of this broken ooid. Layers of CaCO3 wrap around it.



  40. Great White Ooid

    Snapshot Title: Great White Ooid
    Taken by: Callan Bentley

    Image: Ooids
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Why's this one so sparkling white?



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