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Callan Bentley's Snapshots

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  1. P-sol

    Snapshot Title: P-sol
    Taken by: Callan Bentley

    Image: Sugarloaf Mountain Quartzite
    Image Owner: Callan Bentley



    Description:

    Embayed grain boundaries.



  2. P sol Wonderland

    Snapshot Title: P sol Wonderland
    Taken by: Callan Bentley

    Image: Conglomerate as countertop, on display in Berryville, Virginia
    Image Owner: Callan Bentley



    Description:

    A terrific suite of pressure-solution induced grain boundary contacts here.



  3. Stitching error "fault"

    Snapshot Title: Stitching error "fault"
    Taken by: Callan Bentley

    Image: Conglomerate as countertop, on display in Berryville, Virginia
    Image Owner: Callan Bentley



    Description:

    Oops



  4. Pressure solution

    Snapshot Title: Pressure solution
    Taken by: Callan Bentley

    Image: Conglomerate as countertop, on display in Berryville, Virginia
    Image Owner: Callan Bentley



    Description:

    Check out the grain boundaries - flush, embayed.



  5. Sense of scale

    Snapshot Title: Sense of scale
    Taken by: Callan Bentley

    Image: Conglomerate as countertop, on display in Berryville, Virginia
    Image Owner: Callan Bentley



    Description:

    Lens cap



  6. Garnet

    Snapshot Title: Garnet
    Taken by: Callan Bentley

    Image: Garnet schist
    Image Owner: Callan Bentley



    Description:

    Porphyroblast



  7. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Garnet schist
    Image Owner: Callan Bentley



    Description:

    This black bar is 1 cm wide/long.



  8. Scale label

    Snapshot Title: Scale label
    Taken by: Callan Bentley

    Image: L-tectonite, side view
    Image Owner: Callan Bentley



    Description:

    Hidden amongst the pixels.



  9. Sense of scale

    Snapshot Title: Sense of scale
    Taken by: Callan Bentley

    Image: Ronasvoe beach gravel
    Image Owner: Callan Bentley



    Description:

    Lens cap



  10. Foram

    Snapshot Title: Foram
    Taken by: Callan Bentley

    Image: Ronasvoe and Ronas Hill, Shetland
    Image Owner: Callan Bentley



    Description:

    There are foraminiferida floating in these waters. Check one out here: gigapan.com/gigapans/196832



  11. A closer look

    Snapshot Title: A closer look
    Taken by: Callan Bentley

    Image: Sediment from Ronasvoe, Shetland, Scotland
    Image Owner: Robin Rohrback



    Description:

    Here's an SEM image of a foram from this sediment sample.



  12. 1 cm tall

    Snapshot Title: 1 cm tall
    Taken by: Callan Bentley

    Image: Curly graptolites
    Image Owner: Callan Bentley



    Description:

    To give you a sense of scale.



  13. Boudin neck

    Snapshot Title: Boudin neck
    Taken by: Callan Bentley

    Image: S-C mylonite
    Image Owner: Callan Bentley



    Description:

    Incipient boudinage on a small scale.



  14. 1 cm

    Snapshot Title: 1 cm
    Taken by: Callan Bentley

    Image: S-C mylonite
    Image Owner: Callan Bentley



    Description:

    This is a sense of scale.



  15. The Grind

    Snapshot Title: The Grind
    Taken by: Callan Bentley

    Image: Grind of the Navir
    Image Owner: Callan Bentley



    Description:

    "Gateway of the Borer"



  16. Storm beach

    Snapshot Title: Storm beach
    Taken by: Callan Bentley

    Image: Grind of the Navir
    Image Owner: Callan Bentley



    Description:

    Boulder deposit from storm waves - 15 m above sea level.



  17. Allen Fraser

    Snapshot Title: Allen Fraser
    Taken by: Callan Bentley

    Image: Grind of the Navir
    Image Owner: Callan Bentley



    Description:

    of Shetland GeoTours



  18. GigaPan at work

    Snapshot Title: GigaPan at work
    Taken by: Callan Bentley

    Image: Grind of the Navir
    Image Owner: Callan Bentley



    Description:

    The robot is making a GigaPan of this slab: www.gigapan.com/gigapans/188903



  19. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Fold
    Image Owner: Callan Bentley



    Description:

    1 cm



  20. Muscovite

    Snapshot Title: Muscovite
    Taken by: Callan Bentley

    Image: Boudinaged torumaline from the Setters Schist, Maryland
    Image Owner: Callan Bentley



    Description:

    Lots of it.



  21. Quantify stretch

    Snapshot Title: Quantify stretch
    Taken by: Callan Bentley

    Image: Boudinaged torumaline from the Setters Schist, Maryland
    Image Owner: Callan Bentley



    Description:

    and elongation by comparing the original length to the final length. Is this technique liable to over- or under-estimate strain? Explain.



  22. Foliated

    Snapshot Title: Foliated
    Taken by: Callan Bentley

    Image: Sheared gabbro
    Image Owner: Callan Bentley



    Description:

    Mylonitized (reduced grains size and smeared out)



  23. Equigranular

    Snapshot Title: Equigranular
    Taken by: Callan Bentley

    Image: Sheared gabbro
    Image Owner: Callan Bentley



    Description:

    undeformed



  24. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Sheared gabbro
    Image Owner: Callan Bentley



    Description:

    This is 1 cm wide.



  25. Gravel

    Snapshot Title: Gravel
    Taken by: Callan Bentley

    Image: Ronasvoe and Ronas Hill, Shetland
    Image Owner: Callan Bentley



    Description:

    Check out some of this gravel here: gigapan.com/gigapans/195445



  26. Sand

    Snapshot Title: Sand
    Taken by: Callan Bentley

    Image: Ronasvoe and Ronas Hill, Shetland
    Image Owner: Callan Bentley



    Description:

    Check it out here: a GIGAmacro of a Petri dish full of it: gigapan.com/gigapans/189896



  27. Parking near this building

    Snapshot Title: Parking near this building
    Taken by: Callan Bentley

    Image: Lake strata, Yesnaby Coast, Orkney
    Image Owner: Callan Bentley



    Description:

    Just over the lip of the hill.



  28. Birding

    Snapshot Title: Birding
    Taken by: Callan Bentley

    Image: Lake strata, Yesnaby Coast, Orkney
    Image Owner: Callan Bentley



    Description:

    Checking out the avian residents.



  29. Contemplating the geology?

    Snapshot Title: Contemplating the geology?
    Taken by: Callan Bentley

    Image: Lake strata, Yesnaby Coast, Orkney
    Image Owner: Callan Bentley



    Description:

    Or something else worth paying attention to?



  30. Snoozing bird

    Snapshot Title: Snoozing bird
    Taken by: Callan Bentley

    Image: Lake strata, Yesnaby Coast, Orkney
    Image Owner: Callan Bentley



    Description:

    Shhhh



  31. Weathered

    Snapshot Title: Weathered
    Taken by: Callan Bentley

    Image: Weathered and jointed ignimbrite, Grind of the Navir, Shetland
    Image Owner: Callan Bentley



    Description:

    ignimbrite is black



  32. Fresh

    Snapshot Title: Fresh
    Taken by: Callan Bentley

    Image: Weathered and jointed ignimbrite, Grind of the Navir, Shetland
    Image Owner: Callan Bentley



    Description:

    ignimbrite is pink



  33. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Weathered and jointed ignimbrite, Grind of the Navir, Shetland
    Image Owner: Callan Bentley



    Description:

    Lens cap



  34. A closer look

    Snapshot Title: A closer look
    Taken by: Callan Bentley

    Image: Sand from Playa Rocosa De Piñones, Puerto Rico
    Image Owner: Callan Bentley



    Description:

    At a foram from this sand sample: gigapan.com/gigapans/195395 (Scanning Electron Micrograph)



  35. pteropod shell

    Snapshot Title: pteropod shell
    Taken by: Callan Bentley

    Image: Sand from Playa Rocosa De Piñones, Puerto Rico
    Image Owner: Callan Bentley



    Description:

    or merely a small example of a typical benthic gastropod?



  36. A closer look

    Snapshot Title: A closer look
    Taken by: Callan Bentley

    Image: Sand from Playa Rocosa De Piñones, Puerto Rico
    Image Owner: Callan Bentley



    Description:

    at a sea urchin spine, via the scanning electron microscope: gigapan.com/gigapans/195396



  37. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Fish fossil from Green River Formation
    Image Owner: Callan Bentley



    Description:

    1 cm wide.



  38. Calculate Stretch

    Snapshot Title: Calculate Stretch
    Taken by: Callan Bentley

    Image: Boudinaged tourmalines in Setters Schist, Maryland
    Image Owner: Callan Bentley



    Description:

    compare initial to final length.



  39. Conchoidal fractures

    Snapshot Title: Conchoidal fractures
    Taken by: Callan Bentley

    Image: Sand from Playa Rocosa De Piñones, Puerto Rico
    Image Owner: Callan Bentley



    Description:

    Define this quartz sand grain.



  40. Sea urchin

    Snapshot Title: Sea urchin
    Taken by: Callan Bentley

    Image: Sand from Playa Rocosa De Piñones, Puerto Rico
    Image Owner: Callan Bentley



    Description:

    Spine



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