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Callan Bentley's Snapshots

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  1. Weathered exterior

    Snapshot Title: Weathered exterior
    Taken by: Callan Bentley

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



    Description:

    compare to other



  2. Geopetal

    Snapshot Title: Geopetal
    Taken by: Callan Bentley

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



    Description:

    Which way's up?



  3. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Pseudotachylyte
    Image Owner: Callan Bentley



    Description:

    This blue box is 1 cm wide.



  4. Hidden message

    Snapshot Title: Hidden message
    Taken by: Callan Bentley

    Image: Granite
    Image Owner: Callan Bentley



    Description:

    About the scale.



  5. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Granite
    Image Owner: Callan Bentley



    Description:

    This black bar is 1 cm "tall."



  6. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Shear zone in gabbro
    Image Owner: Callan Bentley



    Description:

    1 cm "tall" black bar



  7. 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.



  8. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Crinoid columnal horizon
    Image Owner: Callan Bentley



    Description:

    This black bar is 1 cm wide.



  9. Pyrite

    Snapshot Title: Pyrite
    Taken by: Callan Bentley

    Image: Pyrite in greenschist
    Image Owner: Callan Bentley



    Description:

    Cubic habit



  10. Pyrite

    Snapshot Title: Pyrite
    Taken by: Callan Bentley

    Image: Pyrite in greenschist
    Image Owner: Callan Bentley



    Description:

    cubic habit



  11. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Pyrite in greenschist
    Image Owner: Callan Bentley



    Description:

    This black bars is 1 cm wide.



  12. 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.



  13. Trackway

    Snapshot Title: Trackway
    Taken by: Callan Bentley

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



    Description:

    Traces of some critter



  14. 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".



  15. 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



  16. 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.



  17. 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.



  18. Lens cap

    Snapshot Title: Lens cap
    Taken by: Callan Bentley

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



    Description:

    for scale



  19. 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.



  20. 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").



  21. Outcrops

    Snapshot Title: Outcrops
    Taken by: Callan Bentley

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



    Description:

    of Dalradian metamorphic rocks.



  22. Human

    Snapshot Title: Human
    Taken by: Callan Bentley

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



    Description:

    for scale



  23. 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



  24. 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.



  25. 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.



  26. Scleractinian coral

    Snapshot Title: Scleractinian coral
    Taken by: Callan Bentley

    Image: Chesapecten middlesexensis
    Image Owner: Callan Bentley



    Description:

    overgrowth



  27. 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.



  28. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Chesapecten middlesexensis
    Image Owner: Callan Bentley



    Description:

    This black bar is 1 cm wide.



  29. Lovely green

    Snapshot Title: Lovely green
    Taken by: Callan Bentley

    Image: Verdite
    Image Owner: Callan Bentley



    Description:

    There's nothing else like it.



  30. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Verdite
    Image Owner: Callan Bentley



    Description:

    The black bar is 1 cm wide.



  31. 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?



  32. Truncation

    Snapshot Title: Truncation
    Taken by: Callan Bentley

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



    Description:

    of cross beds by overlying massive bed.



  33. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

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



    Description:

    This black bar is 1 cm wide.



  34. Spinifex needles

    Snapshot Title: Spinifex needles
    Taken by: Callan Bentley

    Image: Komatiite, Barberton Greenstone Belt
    Image Owner: Callan Bentley



    Description:

    Radiating out in a fan.



  35. Weathered spinifex

    Snapshot Title: Weathered spinifex
    Taken by: Callan Bentley

    Image: Komatiite, Barberton Greenstone Belt
    Image Owner: Callan Bentley



    Description:

    They show up nicely on the weathered surfaces.



  36. Weathering rind

    Snapshot Title: Weathering rind
    Taken by: Callan Bentley

    Image: Komatiite, Barberton Greenstone Belt
    Image Owner: Callan Bentley



    Description:

    Nice rusty exterior to these komatiites.



  37. Spinifex

    Snapshot Title: Spinifex
    Taken by: Callan Bentley

    Image: Komatiite, Barberton Greenstone Belt
    Image Owner: Callan Bentley



    Description:

    Needlelike olivines in chandelier-like clusters.



  38. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Komatiite, Barberton Greenstone Belt
    Image Owner: Callan Bentley



    Description:

    This black bar is 1 cm wide.



  39. Weathering rind

    Snapshot Title: Weathering rind
    Taken by: Callan Bentley

    Image: Komatiite, Barberton Greenstone Belt
    Image Owner: Callan Bentley



    Description:

    Ultramafic lava isn't happy at Earth's surface.



  40. Spinifex

    Snapshot Title: Spinifex
    Taken by: Callan Bentley

    Image: Komatiite, Barberton Greenstone Belt
    Image Owner: Callan Bentley



    Description:

    Olivine crystals



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