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Callan Bentley's Snapshots

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  1. Pyrite

    Snapshot Title: Pyrite
    Taken by: Callan Bentley

    Image: Sand from Paphos, Cyprus
    Image Owner: Robin Rohrback-Schiavone



    Description:

    cubic grain



  2. Cleavage

    Snapshot Title: Cleavage
    Taken by: Callan Bentley

    Image: Sand from Halls Lake, Ontario, Canada
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Nice



  3. Lithic clast?

    Snapshot Title: Lithic clast?
    Taken by: Callan Bentley

    Image: Ignimbrite thin section
    Image Owner: Ian Butler



    Description:

    Seems like this could be a poly-crystal aggregate that preceded eruption?



  4. Interesting contrast / comparison

    Snapshot Title: Interesting contrast / comparison
    Taken by: Callan Bentley

    Image: WV Rt 55 Whipcove Anticline
    Image Owner: Alan Pitts



    Description:

    between weathering 'style' of the outcrop and the clast size of the sediment that is building up in the small "mini-talus" slopes at the base of the cliff.



  5. More snapshots

    Snapshot Title: More snapshots
    Taken by: Callan Bentley

    Image: WV Rt 55 Whipcove Anticline
    Image Owner: Alan Pitts



    Description:

    about hinges and wrinkles



  6. Synform hinge

    Snapshot Title: Synform hinge
    Taken by: Callan Bentley

    Image: WV Rt 55 Whipcove Anticline
    Image Owner: Alan Pitts



    Description:

    appears to be here. A good place to measure the limbs' strike and dip and then use a stereonet to determine the trend and plunge of the hinge line.



  7. Interesting

    Snapshot Title: Interesting
    Taken by: Callan Bentley

    Image: WV Rt 55 Whipcove Anticline
    Image Owner: Alan Pitts



    Description:

    that the same strata are yellow at the top and gray at the bottom.



  8. One way

    Snapshot Title: One way
    Taken by: Callan Bentley

    Image: WV new Route 55 Folded Tonoloway
    Image Owner: Alan Pitts



    Description:

    GigaPan is the only way.



  9. Rhythmic bedding

    Snapshot Title: Rhythmic bedding
    Taken by: Callan Bentley

    Image: WV new Route 55 Folded Tonoloway
    Image Owner: Alan Pitts



    Description:

    Gray, yellow, brown - seems to be a repeating pattern. What does this mean?



  10. Steeply dipping

    Snapshot Title: Steeply dipping
    Taken by: Callan Bentley

    Image: WV new Route 55 Folded Tonoloway
    Image Owner: Alan Pitts



    Description:

    east-facing joint set



  11. Great looking sand

    Snapshot Title: Great looking sand
    Taken by: Callan Bentley

    Image: Calvert Cliffs Sand
    Image Owner: Robin Rohrback-Schiavone



    Description:

    .



  12. Multicolored

    Snapshot Title: Multicolored
    Taken by: Callan Bentley

    Image: Sand from LaParee Beach, Bretignolles-sur-Mer, France
    Image Owner: Robin Rohrback-Schiavone



    Description:

    well rounded, too!



  13. Focus contrast

    Snapshot Title: Focus contrast
    Taken by: Callan Bentley

    Image: Setters Schist
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Some areas are in focus, others aren't, like the big porphyroblast of garnet in the lower right of this snapshot.



  14. Some doubling up

    Snapshot Title: Some doubling up
    Taken by: Callan Bentley

    Image: Setters Schist
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Image stacking slightly misaligned. Arrrgh.



  15. Mud laminations

    Snapshot Title: Mud laminations
    Taken by: Callan Bentley

    Image: Konnarock Formation as Cautionary Tale 2
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Very fine-grains; very calm deposition (lake bottom?)



  16. Arkosic sand

    Snapshot Title: Arkosic sand
    Taken by: Callan Bentley

    Image: Konnarock Formation as Cautionary Tale 2
    Image Owner: Robin Rohrback-Schiavone



    Description:

    .



  17. Climbing ripples?

    Snapshot Title: Climbing ripples?
    Taken by: Callan Bentley

    Image: Konnarock Formation as Cautionary Tale 2
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Is that what's going on here?



  18. Flame structure

    Snapshot Title: Flame structure
    Taken by: Callan Bentley

    Image: Konnarock Formation as Cautionary Tale 2
    Image Owner: Robin Rohrback-Schiavone



    Description:

    soft sediment deformation - graviational instability generated by the sudden deposition of a bolus of sand atop layers of squishy mud.



  19. Dropstones

    Snapshot Title: Dropstones
    Taken by: Callan Bentley

    Image: Konnarock Formation as Cautionary Tale 2
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Iceberg-rafted dropstones.



  20. Ball & pillow

    Snapshot Title: Ball & pillow
    Taken by: Callan Bentley

    Image: Monocline in Hampshire Formation
    Image Owner: Alan Pitts



    Description:

    Looks like some soft sediment deformation to me.



  21. Compare & contrast

    Snapshot Title: Compare & contrast
    Taken by: Callan Bentley

    Image: Konnarock Formation: a GIGAmacro Cautionary Tale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Properly stacked (left) and improperly (right)



  22. And, yet,

    Snapshot Title: And, yet,
    Taken by: Callan Bentley

    Image: Konnarock Formation: a GIGAmacro Cautionary Tale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    ...some areas look just fine upon zooming in. What gives?



  23. Seeing double

    Snapshot Title: Seeing double
    Taken by: Callan Bentley

    Image: Konnarock Formation: a GIGAmacro Cautionary Tale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Focal stacking chooses two different "base" images?



  24. The dreaded 'starburst' effect

    Snapshot Title: The dreaded 'starburst' effect
    Taken by: Callan Bentley

    Image: Konnarock Formation: a GIGAmacro Cautionary Tale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Why, oh why?



  25. Focal stacking 'edge' artifact

    Snapshot Title: Focal stacking 'edge' artifact
    Taken by: Callan Bentley

    Image: Konnarock Formation: a GIGAmacro Cautionary Tale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Aaaarrrrgggghhh.



  26. Cross-beds

    Snapshot Title: Cross-beds
    Taken by: Callan Bentley

    Image: Ferron Sandstone
    Image Owner: Mark Barton



    Description:

    Sweet - "textbook" example.



  27. Weird lumps

    Snapshot Title: Weird lumps
    Taken by: Callan Bentley

    Image: Flute Casts in Brallier Formation Shale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Not sure how to interpret this blob, the biggest protrusion from the bottom of the bed. (Burrow infill?)



  28. Interesting way these...

    Snapshot Title: Interesting way these...
    Taken by: Callan Bentley

    Image: Flute Casts in Brallier Formation Shale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    ...joints (veins) tip out with respect to one another.



  29. Tool marks

    Snapshot Title: Tool marks
    Taken by: Callan Bentley

    Image: Flute Casts in Brallier Formation Shale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    These straight grooves (angled from lower left towards upper right) may be tool marks (gouges in the sediment when a stick or shell or something -- a "tool" -- is dragged in a current over the sedimen...



  30. Interesting fracture/vein relationship

    Snapshot Title: Interesting fracture/vein relationship
    Taken by: Callan Bentley

    Image: Flute Casts in Brallier Formation Shale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    They're the same, but then the split, and re-merge?



  31. More sweet flutes

    Snapshot Title: More sweet flutes
    Taken by: Callan Bentley

    Image: Flute Casts in Brallier Formation Shale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    pointed at upstream end, flaring out wider on the downstream end.



  32. Two flute casts

    Snapshot Title: Two flute casts
    Taken by: Callan Bentley

    Image: Flute Casts in Brallier Formation Shale
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Current direction was left-to-right in this image. You're looking at the bottom of the bedding plane.



  33. Neat to see

    Snapshot Title: Neat to see
    Taken by: Callan Bentley

    Image: Brallier shale NEW new Route 55 WV (version 1)
    Image Owner: Alan Pitts



    Description:

    how the location of the seeps (marked by ice) are controlled by the change in dip of the beds (trough of an open, upright syncline).



  34. Karst signature

    Snapshot Title: Karst signature
    Taken by: Callan Bentley

    Image: Syncline in Helderburg Group
    Image Owner: Alan Pitts



    Description:

    Is this breakdown from a collapsed cave system?



  35. Hinge 2

    Snapshot Title: Hinge 2
    Taken by: Callan Bentley

    Image: Syncline in Helderburg Group
    Image Owner: Alan Pitts



    Description:

    Not as well defined up here...



  36. Hinge

    Snapshot Title: Hinge
    Taken by: Callan Bentley

    Image: Syncline in Helderburg Group
    Image Owner: Alan Pitts



    Description:

    Nice and crisp, straight limbs, apparently at close to a right angle to one another.



  37. Lens cap for scale

    Snapshot Title: Lens cap for scale
    Taken by: Callan Bentley

    Image: Genoa Fault Closeup, Carson Valley, Nevada
    Image Owner: ahochstaedter



    Description:

    Pentax



  38. Mr. E. coli

    Snapshot Title: Mr. E. coli
    Taken by: Callan Bentley

    Image: Thoroughfare Gap Weverton Formation, upper section
    Image Owner: Alan Pitts



    Description:

    looks downtrodden and mopey...



  39. Ponies!

    Snapshot Title: Ponies!
    Taken by: Callan Bentley

    Image: White Rocks Overlook Bull Run Mountain, Virginia
    Image Owner: Alan Pitts



    Description:

    A whole herd of them!



  40. Mr. E. coli

    Snapshot Title: Mr. E. coli
    Taken by: Callan Bentley

    Image: White Rocks Overlook Bull Run Mountain, Virginia
    Image Owner: Alan Pitts



    Description:

    is out of focus, and I'm sure he's okay with that.



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