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Callan Bentley's Snapshots

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  1. Landslide

    Snapshot Title: Landslide
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#1 of 8)
    Image Owner: Callan Bentley



    Description:

    Can you work out a landslide history of this slope on the basis of vegetative cover (or lack thereof)?



  2. Shooting error

    Snapshot Title: Shooting error
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#1 of 8)
    Image Owner: Callan Bentley



    Description:

    When I was shooting, I had the camera on auto-focus. It has a hard time deciding what to focus on when aimed at empty sky (for instance, adjacent to this tree branch). In the time it takes for the cam...



  3. Sand sampled

    Snapshot Title: Sand sampled
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#1 of 8)
    Image Owner: Callan Bentley



    Description:

    Want to see a petri dish full of sand from this location in "macro" GigaPan view? Try this:
    gigapan.com/gigapans/126987



  4. Macro boulder

    Snapshot Title: Macro boulder
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#1 of 8)
    Image Owner: Callan Bentley



    Description:

    This boulder was collected for macro GigaPan imaging.



  5. Bucket

    Snapshot Title: Bucket
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#1 of 8)
    Image Owner: Callan Bentley



    Description:

    We used this bucket to slosh Bay water over the outcrop and clean it.



  6. Look closer

    Snapshot Title: Look closer
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#1 of 8)
    Image Owner: Callan Bentley



    Description:

    The right (north) half of this outcrop was imaged separately, closer up (and hence in more detail) here:
    gigapan.com/gigapans/124804



  7. Scale pencil

    Snapshot Title: Scale pencil
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#1 of 8)
    Image Owner: Callan Bentley



    Description:

    Black bars along the side of this yellow mechanical pencil are each 1 centimeter in length.



  8. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#1 of 8)
    Image Owner: Callan Bentley



    Description:

    Each of the rectangles on this reference stick are 10 cm long (tall).



  9. Buried alive

    Snapshot Title: Buried alive
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#3 of 8)
    Image Owner: Callan Bentley



    Description:

    The articulation of these valves suggests that this clam was buried whole, and didn't have a chance to rot or have its valves (shells) disarticulated before burial. Maybe it was even buried alive!



  10. Whale rib

    Snapshot Title: Whale rib
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#3 of 8)
    Image Owner: Callan Bentley



    Description:

    This is a partial excavation around a whale rib that extends back into the face of the cliff.



  11. Charcoal

    Snapshot Title: Charcoal
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#3 of 8)
    Image Owner: Callan Bentley



    Description:

    A large piece of Miocene charcoal is present in this deposit.



  12. 10 cm

    Snapshot Title: 10 cm
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#3 of 8)
    Image Owner: Callan Bentley



    Description:

    The long sides of these rectangles are 10 centimeters in length.



  13. Scale pencil

    Snapshot Title: Scale pencil
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#3 of 8)
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil (obliquely viewed) with centimeters marked along the side.



  14. Quartz

    Snapshot Title: Quartz
    Taken by: Callan Bentley

    Image: Porphyroblastic Turkish blueschist
    Image Owner: Callan Bentley



    Description:

    clear and glassy



  15. 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.



  16. 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.



  17. 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.



  18. 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.



  19. 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



  20. 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.



  21. 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



  22. 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.



  23. "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.



  24. 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?



  25. 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.



  26. 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.



  27. 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.



  28. 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.



  29. 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?



  30. Widmanstätten pattern!

    Snapshot Title: Widmanstätten pattern!
    Taken by: Callan Bentley

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



    Description:

    Pallasites are awesome.



  31. 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...



  32. 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.



  33. 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



  34. 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.



  35. 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.



  36. 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.



  37. Trace fossils

    Snapshot Title: Trace fossils
    Taken by: Callan Bentley

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



    Description:

    Bedding parallel



  38. Trace fossils

    Snapshot Title: Trace fossils
    Taken by: Callan Bentley

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



    Description:

    Bedding-parallel



  39. 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



  40. 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



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