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Callan Bentley's Snapshots

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  1. Website

    Snapshot Title: Website
    Taken by: Callan Bentley

    Image: Chapman's Mill, Thoroughfare Gap, Virginia
    Image Owner: Callan Bentley



    Description:

    Learn more about the history of this site at:
    www.chapmansmill.org Will open in a new tab or window/



  2. Pencil for scale

    Snapshot Title: Pencil for scale
    Taken by: Callan Bentley

    Image: Chapman's Mill, Thoroughfare Gap, Virginia
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with 1-cm black bars on the side.



  3. Basalt cobble

    Snapshot Title: Basalt cobble
    Taken by: Callan Bentley

    Image: Waterfall Formation boulder
    Image Owner: Callan Bentley



    Description:

    with rounded corners



  4. 1 cm

    Snapshot Title: 1 cm
    Taken by: Callan Bentley

    Image: Waterfall Formation boulder
    Image Owner: Callan Bentley



    Description:

    One-centimeter-long black bar on the side of a mechanical pencil, to serve as a sense of scale.



  5. Rounded basalt cobble

    Snapshot Title: Rounded basalt cobble
    Taken by: Callan Bentley

    Image: Waterfall Formation boulder
    Image Owner: Callan Bentley



    Description:

    Clearly tumbled some distance before deposition.



  6. Amygdules

    Snapshot Title: Amygdules
    Taken by: Callan Bentley

    Image: Waterfall Formation boulder
    Image Owner: Callan Bentley



    Description:

    Volcanic vesicles later filled with mineral deposits (before a chunk of the basalt that includes them was broken off and tumbled (getting rounded) and then deposited on an alluvial fan (to become part...



  7. 1 cm

    Snapshot Title: 1 cm
    Taken by: Callan Bentley

    Image: Waterfall Formation boulder
    Image Owner: Callan Bentley



    Description:

    One-centimeter bar marked on the side of a mechanical pencil, to provide a sense of scale.



  8. 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.



  9. 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!



  10. 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



  11. 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.



  12. 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.



  13. 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.



  14. 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.



  15. 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.



  16. 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



  17. 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.



  18. 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.



  19. 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.



  20. 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



  21. 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



  22. 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.



  23. 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



  24. 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)



  25. 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



  26. 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



  27. 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



  28. 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).



  29. 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.



  30. 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



  31. 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



  32. 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



  33. 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?



  34. 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)?



  35. 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.



  36. 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



  37. 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.



  38. 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.



  39. 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



  40. 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



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