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Callan Bentley's Snapshots

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  1. Pencil for scale

    Snapshot Title: Pencil for scale
    Taken by: Callan Bentley

    Image: Harpers Formation, Throroughfare Gap, Virginia
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with centimeter-long black bars marked along the side.



  2. Sheridan geology vehicle

    Snapshot Title: Sheridan geology vehicle
    Taken by: Callan Bentley

    Image: Sheridan College dinosaur quarry, south of Buffalo Wyoming.
    Image Owner: Callan Bentley



    Description:

    Every geology department should have an SUV for field work!



  3. Searchers

    Snapshot Title: Searchers
    Taken by: Callan Bentley

    Image: Sheridan College dinosaur quarry, south of Buffalo Wyoming.
    Image Owner: Callan Bentley



    Description:

    Looking for bones



  4. Traveler

    Snapshot Title: Traveler
    Taken by: Callan Bentley

    Image: Winter snow in the Fort Valley
    Image Owner: Callan Bentley



    Description:

    Looking guilty, a few minutes after he nipped Jasmine's haunches.



  5. Texture

    Snapshot Title: Texture
    Taken by: Callan Bentley

    Image: Winter snow in the Fort Valley
    Image Owner: Callan Bentley



    Description:

    The snow really brings out the texture of the mountains' slopes.



  6. Herd

    Snapshot Title: Herd
    Taken by: Callan Bentley

    Image: Winter snow in the Fort Valley
    Image Owner: Callan Bentley



    Description:

    The horses of Secret Passage Ranch.



  7. Woodstock Gap

    Snapshot Title: Woodstock Gap
    Taken by: Callan Bentley

    Image: Winter snow in the Fort Valley
    Image Owner: Callan Bentley



    Description:

    4th gap to the south along the crest of Green Mountain.



  8. Mine Gap

    Snapshot Title: Mine Gap
    Taken by: Callan Bentley

    Image: Winter snow in the Fort Valley
    Image Owner: Callan Bentley



    Description:

    third water gap going south along the crest of Green Mountain.



  9. Duncan Gap

    Snapshot Title: Duncan Gap
    Taken by: Callan Bentley

    Image: Winter snow in the Fort Valley
    Image Owner: Callan Bentley



    Description:

    Another water gap



  10. Mudhole Gap

    Snapshot Title: Mudhole Gap
    Taken by: Callan Bentley

    Image: Winter snow in the Fort Valley
    Image Owner: Callan Bentley



    Description:

    Peering through into the Little Fort Valley.



  11. Jasmine

    Snapshot Title: Jasmine
    Taken by: Callan Bentley

    Image: Winter snow in the Fort Valley
    Image Owner: Callan Bentley



    Description:

    ...wonders what that guy up the hill is doing.



  12. Upper shell beds

    Snapshot Title: Upper shell beds
    Taken by: Callan Bentley

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



    Description:

    There are fossiliferous strata up here, too.



  13. Vertical burrows

    Snapshot Title: Vertical burrows
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#2 of 8)
    Image Owner: Callan Bentley



    Description:

    light gray spikes



  14. Worm burrow

    Snapshot Title: Worm burrow
    Taken by: Callan Bentley

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



    Description:

    pierced (at upper right) by crab burrow



  15. 10 cm

    Snapshot Title: 10 cm
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#6 of 8)
    Image Owner: Callan Bentley



    Description:

    Each of the black and white bars on this reference scale are 10 centimeters in length.



  16. Turitella

    Snapshot Title: Turitella
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#6 of 8)
    Image Owner: Callan Bentley



    Description:

    High-spiraled snail



  17. Palimpsest II

    Snapshot Title: Palimpsest II
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#6 of 8)
    Image Owner: Callan Bentley



    Description:

    Crab burrow (smaller diameter) overprinting worm burrow (light colored)



  18. Palimpsest

    Snapshot Title: Palimpsest
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#6 of 8)
    Image Owner: Callan Bentley



    Description:

    Crab burrow overprinting worm burrow



  19. Worm burrow

    Snapshot Title: Worm burrow
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#6 of 8)
    Image Owner: Callan Bentley



    Description:

    Full of lighter colored sediment



  20. Crab burrow

    Snapshot Title: Crab burrow
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#6 of 8)
    Image Owner: Callan Bentley



    Description:

    Full of shelly debris



  21. Outcrop face

    Snapshot Title: Outcrop face
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#6 of 8)
    Image Owner: Callan Bentley



    Description:

    The outcrop face here is oriented 338°, 80° (right hand rule).



  22. Joint

    Snapshot Title: Joint
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#7 of 8)
    Image Owner: Callan Bentley



    Description:

    The rusty line (dipping down to the right) is the trace of a fracture surface along which oxidizing fluids have flowed.



  23. Barnacle

    Snapshot Title: Barnacle
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#7 of 8)
    Image Owner: Callan Bentley



    Description:

    This barnacle is native to a higher (stratigraphic) bed, and likely tumbled down the cliff face to end up on the beach here. See the larger context here:
    gigapan.com/gigapans/124800



  24. Zoom in for closer detail

    Snapshot Title: Zoom in for closer detail
    Taken by: Callan Bentley

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



    Description:

    This outcrop surface was shot at closer range, here:
    gigapan.com/gigapans/124864



  25. Zoom in for more detail

    Snapshot Title: Zoom in for more detail
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#2 of 8)
    Image Owner: Callan Bentley



    Description:

    This outcrop surface was shot at closer range, here:
    gigapan.com/gigapans/124864



  26. Nested tupperware

    Snapshot Title: Nested tupperware
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#2 of 8)
    Image Owner: Callan Bentley



    Description:

    How does a pile-up like this happen?



  27. Ecphora?

    Snapshot Title: Ecphora?
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#7 of 8)
    Image Owner: Callan Bentley



    Description:

    Is this an Ecphora shell in cross-section (perpendicular to the spiralling axis)?



  28. Bored scallop

    Snapshot Title: Bored scallop
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#7 of 8)
    Image Owner: Callan Bentley



    Description:

    I think these holes are a trace of another organism parasitising this scallop.



  29. Worm burrow

    Snapshot Title: Worm burrow
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#7 of 8)
    Image Owner: Callan Bentley



    Description:

    Note the light gray color



  30. 1 cm

    Snapshot Title: 1 cm
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#6 of 8)
    Image Owner: Callan Bentley



    Description:

    The black bars on the side of this pencil are each 1 centimeter in length.



  31. 1 cm

    Snapshot Title: 1 cm
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#7 of 8)
    Image Owner: Callan Bentley



    Description:

    The black bars on the side of this pencil are each 1 centimeter in length.



  32. Zoom in for more detail

    Snapshot Title: Zoom in for more detail
    Taken by: Callan Bentley

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



    Description:

    This outcrop surface was shot at closer range, here:
    gigapan.com/gigapans/124829



  33. Zoom in for more detail

    Snapshot Title: Zoom in for more detail
    Taken by: Callan Bentley

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



    Description:

    This outcrop surface was shot at closer range, here:
    gigapan.com/gigapans/124829



  34. Messy outcrop

    Snapshot Title: Messy outcrop
    Taken by: Callan Bentley

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



    Description:

    If you head down the beach another 15 meters or so, you'll find this outcrop:
    gigapan.com/gigapans/124841It's not as cleaned off as the face you see in the majority of THIS image, though.



  35. Driftwood

    Snapshot Title: Driftwood
    Taken by: Callan Bentley

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



    Description:

    Where did it originate?



  36. Creeping green

    Snapshot Title: Creeping green
    Taken by: Callan Bentley

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



    Description:

    Moss



  37. Buried alive

    Snapshot Title: Buried alive
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#8 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!



  38. Outcrop face

    Snapshot Title: Outcrop face
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientist Cliffs, Maryland (#5 of 8)
    Image Owner: Callan Bentley



    Description:

    Orientation of the exposure face is 334°, 58° (right hand rule).



  39. Worm burrow

    Snapshot Title: Worm burrow
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientist Cliffs, Maryland (#5 of 8)
    Image Owner: Callan Bentley



    Description:

    Filled with lighter-colored sediment. Oblique cross-section.



  40. Joints

    Snapshot Title: Joints
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientist Cliffs, Maryland (#5 of 8)
    Image Owner: Callan Bentley



    Description:

    Two fractures are evident here, shallowly dipping to the right (north). Oxidizing fluids evidently flowed along these surfaces, staining the gray host rock to a tan color.



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