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Callan Bentley's Snapshots

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  1. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Wrinkly crenulation folds in marble
    Image Owner: Callan Bentley



    Description:

    1 cm wide.



  2. Split

    Snapshot Title: Split
    Taken by: Callan Bentley

    Image: Wrinkly crenulation folds in marble
    Image Owner: Callan Bentley



    Description:

    What's going on here?



  3. Highly foliated texture

    Snapshot Title: Highly foliated texture
    Taken by: Callan Bentley

    Image: Shear zone in granite
    Image Owner: Callan Bentley



    Description:

    Sheared out. Note ribboned quartz with orthogonal fracturing.



  4. Typical texture

    Snapshot Title: Typical texture
    Taken by: Callan Bentley

    Image: Shear zone in granite
    Image Owner: Callan Bentley



    Description:

    Phaneritic



  5. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Shear zone in granite
    Image Owner: Callan Bentley



    Description:

    This black bar is 1 cm wide.



  6. Sea urchin spine

    Snapshot Title: Sea urchin spine
    Taken by: Callan Bentley

    Image: Sediment from Blackbird Caye, Turneffe Atoll, Belize
    Image Owner: Robin Rohrback



    Description:

    Fairly weathered



  7. Foram

    Snapshot Title: Foram
    Taken by: Callan Bentley

    Image: Sediment from Blackbird Caye, Turneffe Atoll, Belize
    Image Owner: Robin Rohrback



    Description:

    See a scanning electron micrograph GigaPan of this little fellow here:
    gigapan.com/gigapans/195029



  8. Geopetal

    Snapshot Title: Geopetal
    Taken by: Callan Bentley

    Image: Crossbedded Red Sandstone with Lichen
    Image Owner: Robin Rohrback



    Description:

    Which way's up?



  9. Slabbed and polished

    Snapshot Title: Slabbed and polished
    Taken by: Callan Bentley

    Image: Crossbedded Red Sandstone with Lichen
    Image Owner: Robin Rohrback



    Description:

    compare to other



  10. Weathered exterior

    Snapshot Title: Weathered exterior
    Taken by: Callan Bentley

    Image: Crossbedded Red Sandstone with Lichen
    Image Owner: Robin Rohrback



    Description:

    compare to other



  11. Geopetal

    Snapshot Title: Geopetal
    Taken by: Callan Bentley

    Image: Crossbedded Red Sandstone with Lichen
    Image Owner: Robin Rohrback



    Description:

    Which way's up?



  12. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Pseudotachylyte
    Image Owner: Callan Bentley



    Description:

    This blue box is 1 cm wide.



  13. Hidden message

    Snapshot Title: Hidden message
    Taken by: Callan Bentley

    Image: Granite
    Image Owner: Callan Bentley



    Description:

    About the scale.



  14. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Granite
    Image Owner: Callan Bentley



    Description:

    This black bar is 1 cm "tall."



  15. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Shear zone in gabbro
    Image Owner: Callan Bentley



    Description:

    1 cm "tall" black bar



  16. Pentameral symmetry

    Snapshot Title: Pentameral symmetry
    Taken by: Callan Bentley

    Image: Crinoid columnal horizon
    Image Owner: Callan Bentley



    Description:

    Nice view of a five-pointed 'star' hollow in the center of the columnal.



  17. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Crinoid columnal horizon
    Image Owner: Callan Bentley



    Description:

    This black bar is 1 cm wide.



  18. Pyrite

    Snapshot Title: Pyrite
    Taken by: Callan Bentley

    Image: Pyrite in greenschist
    Image Owner: Callan Bentley



    Description:

    Cubic habit



  19. Pyrite

    Snapshot Title: Pyrite
    Taken by: Callan Bentley

    Image: Pyrite in greenschist
    Image Owner: Callan Bentley



    Description:

    cubic habit



  20. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Pyrite in greenschist
    Image Owner: Callan Bentley



    Description:

    This black bars is 1 cm wide.



  21. Sand

    Snapshot Title: Sand
    Taken by: Callan Bentley

    Image: Holey Chesapecten jeffersonius
    Image Owner: Callan Bentley



    Description:

    A collection of sand hiding in one of the bore-holes.



  22. Trackway

    Snapshot Title: Trackway
    Taken by: Callan Bentley

    Image: Mudcracks at Höfn, Iceland
    Image Owner: Callan Bentley



    Description:

    Traces of some critter



  23. Mudcracks

    Snapshot Title: Mudcracks
    Taken by: Callan Bentley

    Image: Mudcracks at Höfn, Iceland
    Image Owner: Callan Bentley



    Description:

    showing well the concave shape of the main "plate".



  24. Camper van

    Snapshot Title: Camper van
    Taken by: Callan Bentley

    Image: Mudcracks at Höfn, Iceland
    Image Owner: Callan Bentley



    Description:

    One of many in this country



  25. Long axis

    Snapshot Title: Long axis
    Taken by: Callan Bentley

    Image: Stretched beach cobbles, Funzie Bay, Fetlar
    Image Owner: Callan Bentley



    Description:

    Derek Flinn would be interested in axial ratios on these clasts.



  26. Green cobble

    Snapshot Title: Green cobble
    Taken by: Callan Bentley

    Image: Stretched beach cobbles, Funzie Bay, Fetlar
    Image Owner: Callan Bentley



    Description:

    I wonder at its composition.



  27. Lens cap

    Snapshot Title: Lens cap
    Taken by: Callan Bentley

    Image: Stretched beach cobbles, Funzie Bay, Fetlar
    Image Owner: Callan Bentley



    Description:

    for scale



  28. Groundwater

    Snapshot Title: Groundwater
    Taken by: Callan Bentley

    Image: Papil Water, Fetlar, Shetland
    Image Owner: Callan Bentley



    Description:

    Leaking out of Papil Water and flowing down the beach to the ocean.



  29. Papil Water

    Snapshot Title: Papil Water
    Taken by: Callan Bentley

    Image: Papil Water, Fetlar, Shetland
    Image Owner: Callan Bentley



    Description:

    This freshwater loch is Papil Water. The name comes from an old version of "Papal" (as in the Catholic sense of "holy").



  30. Outcrops

    Snapshot Title: Outcrops
    Taken by: Callan Bentley

    Image: Papil Water, Fetlar, Shetland
    Image Owner: Callan Bentley



    Description:

    of Dalradian metamorphic rocks.



  31. Human

    Snapshot Title: Human
    Taken by: Callan Bentley

    Image: Papil Water, Fetlar, Shetland
    Image Owner: Callan Bentley



    Description:

    for scale



  32. Serpentinite

    Snapshot Title: Serpentinite
    Taken by: Callan Bentley

    Image: Metamorphic cobbles on a beach on Fetlar
    Image Owner: Callan Bentley



    Description:

    Cobble of metamorphosed oceanic crust



  33. Lens cap

    Snapshot Title: Lens cap
    Taken by: Callan Bentley

    Image: Metamorphic cobbles on a beach on Fetlar
    Image Owner: Callan Bentley



    Description:

    to serve as a sense of scale.



  34. Coral polyp base

    Snapshot Title: Coral polyp base
    Taken by: Callan Bentley

    Image: Chesapecten middlesexensis
    Image Owner: Callan Bentley



    Description:

    Note heaxagonal shape and radiating septae.



  35. Scleractinian coral

    Snapshot Title: Scleractinian coral
    Taken by: Callan Bentley

    Image: Chesapecten middlesexensis
    Image Owner: Callan Bentley



    Description:

    overgrowth



  36. Healed wound?

    Snapshot Title: Healed wound?
    Taken by: Callan Bentley

    Image: Chesapecten middlesexensis
    Image Owner: Callan Bentley



    Description:

    Ribs seem to "wrap" around this hole.



  37. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Chesapecten middlesexensis
    Image Owner: Callan Bentley



    Description:

    This black bar is 1 cm wide.



  38. Lovely green

    Snapshot Title: Lovely green
    Taken by: Callan Bentley

    Image: Verdite
    Image Owner: Callan Bentley



    Description:

    There's nothing else like it.



  39. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Verdite
    Image Owner: Callan Bentley



    Description:

    The black bar is 1 cm wide.



  40. Cross bedding

    Snapshot Title: Cross bedding
    Taken by: Callan Bentley

    Image: Cross beds in komatiitic ash deposits
    Image Owner: Callan Bentley



    Description:

    Inclined lines are cross-laminations. Which way was the current flowing?



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