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Callan Bentley's Snapshots

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  1. Sample number

    Snapshot Title: Sample number
    Taken by: Callan Bentley

    Image: Coloeptera 1030b
    Image Owner: Robin Rohrback-Schiavone



    Description:

    1030B



  2. Antennae

    Snapshot Title: Antennae
    Taken by: Callan Bentley

    Image: Coloeptera 1030b
    Image Owner: Robin Rohrback-Schiavone



    Description:

    segments visible!



  3. Little abdomen

    Snapshot Title: Little abdomen
    Taken by: Callan Bentley

    Image: Coloeptera 1030b
    Image Owner: Robin Rohrback-Schiavone



    Description:

    of something...



  4. What is this critter?

    Snapshot Title: What is this critter?
    Taken by: Callan Bentley

    Image: Coloeptera 1030b
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Seems to have a very big head...



  5. Bonus wasp

    Snapshot Title: Bonus wasp
    Taken by: Callan Bentley

    Image: Coloeptera 1030b
    Image Owner: Robin Rohrback-Schiavone



    Description:

    A little something extra, revealed by the GigaPan!



  6. Ooid

    Snapshot Title: Ooid
    Taken by: Callan Bentley

    Image: Snowball Earth Eduational Rock Sample Suite TS-7
    Image Owner: Robin Rohrback-Schiavone



    Description:

    This grain contains concentrically zoned spherical grains! Are they ooids?



  7. Weird color difference

    Snapshot Title: Weird color difference
    Taken by: Callan Bentley

    Image: Snowball Earth Educational Rock Sample Suite TS-12
    Image Owner: Robin Rohrback-Schiavone



    Description:

    What's up with that?



  8. Dropstone

    Snapshot Title: Dropstone
    Taken by: Callan Bentley

    Image: Snowball Earth Educational Rock Sample Suite TS-12
    Image Owner: Robin Rohrback-Schiavone



    Description:

    .



  9. Cross bedding

    Snapshot Title: Cross bedding
    Taken by: Callan Bentley

    Image: Snowball Earth Educational Rock Sample Suite TS-12
    Image Owner: Robin Rohrback-Schiavone



    Description:

    current flow to the right



  10. Oblique fracture taking advantage of horizontal joint set

    Snapshot Title: Oblique fracture taking advantage of horizontal joint set
    Taken by: Callan Bentley

    Image: Conway Robinson State Forest- Diabase
    Image Owner: Alan Pitts



    Description:

    ...creating jagged zig zag staircase effect.



  11. Sea urchin spine?

    Snapshot Title: Sea urchin spine?
    Taken by: Callan Bentley

    Image: Sand from Miami, FL, USA
    Image Owner: Robin Rohrback-Schiavone



    Description:

    .



  12. Biotite cluster surrounding...

    Snapshot Title: Biotite cluster surrounding...
    Taken by: Callan Bentley

    Image: Granitic dikes in granite
    Image Owner: Callan Bentley



    Description:

    ... something green?



  13. Easter egg

    Snapshot Title: Easter egg
    Taken by: Callan Bentley

    Image: Sand from Virginia Beach, Virginia
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Well-rounded grain



  14. Curved columns

    Snapshot Title: Curved columns
    Taken by: Callan Bentley

    Image: Bishop Tuff in the Owens Gorge
    Image Owner: ahochstaedter



    Description:

    Columnar jointing of welded tuff



  15. Leaf

    Snapshot Title: Leaf
    Taken by: Callan Bentley

    Image: Grus
    Image Owner: Robin Rohrback-Schiavone



    Description:

    A little brown leaf - something native to the eastern slopes of the Sierra Nevada, presumably.



  16. Lint

    Snapshot Title: Lint
    Taken by: Callan Bentley

    Image: Grus
    Image Owner: Robin Rohrback-Schiavone



    Description:

    a stray fiber, probably not native to the sample



  17. Hornblende

    Snapshot Title: Hornblende
    Taken by: Callan Bentley

    Image: Grus
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Just a little guy, part of a bigger lithic clast dominated by quartz.



  18. Feldspar

    Snapshot Title: Feldspar
    Taken by: Callan Bentley

    Image: Grus
    Image Owner: Robin Rohrback-Schiavone



    Description:

    .



  19. Feldpsar

    Snapshot Title: Feldpsar
    Taken by: Callan Bentley

    Image: Grus
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Boxy, angular shape from 2 planes of cleavage more or less at right angles.



  20. Lithic clast

    Snapshot Title: Lithic clast
    Taken by: Callan Bentley

    Image: Grus
    Image Owner: Robin Rohrback-Schiavone



    Description:

    A little chunk of rock (multiple mineral crystals in a single particle of sediment).



  21. Organic bits

    Snapshot Title: Organic bits
    Taken by: Callan Bentley

    Image: Grus
    Image Owner: Robin Rohrback-Schiavone



    Description:

    From some of the native scrubby vegetation, no doubt.



  22. Quartz

    Snapshot Title: Quartz
    Taken by: Callan Bentley

    Image: Grus
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Conchoidal fracture visible.



  23. What are these?

    Snapshot Title: What are these?
    Taken by: Callan Bentley

    Image: fold structure in Big Bend National Park (Texas)
    Image Owner: minidani



    Description:

    Bedfroms? Boudins? Stromatolites?



  24. Another nice little fault

    Snapshot Title: Another nice little fault
    Taken by: Callan Bentley

    Image: fold structure in Big Bend National Park (Texas)
    Image Owner: minidani



    Description:

    .



  25. Reduction

    Snapshot Title: Reduction
    Taken by: Callan Bentley

    Image: fold structure in Big Bend National Park (Texas)
    Image Owner: minidani



    Description:

    Reduction spots and joint highlighting



  26. Joint

    Snapshot Title: Joint
    Taken by: Callan Bentley

    Image: fold structure in Big Bend National Park (Texas)
    Image Owner: minidani



    Description:

    or vein



  27. Small fault and overlying

    Snapshot Title: Small fault and overlying
    Taken by: Callan Bentley

    Image: fold structure in Big Bend National Park (Texas)
    Image Owner: minidani



    Description:

    fold...



  28. Field notebook

    Snapshot Title: Field notebook
    Taken by: Callan Bentley

    Image: fold structure in Big Bend National Park (Texas)
    Image Owner: minidani



    Description:

    and rope



  29. Fault

    Snapshot Title: Fault
    Taken by: Callan Bentley

    Image: fold structure in Big Bend National Park (Texas)
    Image Owner: minidani



    Description:

    offset in white & overlying yellow layers



  30. Fault-bend fold

    Snapshot Title: Fault-bend fold
    Taken by: Callan Bentley

    Image: fold structure in Big Bend National Park (Texas)
    Image Owner: minidani



    Description:

    in miniature



  31. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: fold structure in Big Bend National Park (Texas)
    Image Owner: minidani



    Description:

    15 cm



  32. Intruder

    Snapshot Title: Intruder
    Taken by: Callan Bentley

    Image: Mudcracks
    Image Owner: Ron Schott



    Description:

    Hey - what's that doing here?!



  33. Stretched vesicles

    Snapshot Title: Stretched vesicles
    Taken by: Callan Bentley

    Image: Bishop Tuff F2 Ashfall
    Image Owner: Robin Rohrback-Schiavone



    Description:

    inside pumice blobs



  34. Lithic clast

    Snapshot Title: Lithic clast
    Taken by: Callan Bentley

    Image: Bishop Tuff F2 Ashfall
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Entrained in the eruption? Or later contamination from nearby White Mountains source rocks?



  35. Glacier

    Snapshot Title: Glacier
    Taken by: Callan Bentley

    Image: Torres Del Paine with moonrise
    Image Owner: Suk Choo Kim



    Description:

    in the French Valley



  36. Terminus of Grey Glacier

    Snapshot Title: Terminus of Grey Glacier
    Taken by: Callan Bentley

    Image: Torres Del Paine with moonrise
    Image Owner: Suk Choo Kim



    Description:

    .



  37. Moon

    Snapshot Title: Moon
    Taken by: Callan Bentley

    Image: Torres Del Paine with moonrise
    Image Owner: Suk Choo Kim



    Description:

    Or "Luna," if you're actually in Patagonia.



  38. Stoping

    Snapshot Title: Stoping
    Taken by: Callan Bentley

    Image: Torres Del Paine with moonrise
    Image Owner: Suk Choo Kim



    Description:

    When chunks of "host" rock break off from the roof (or walls) of a magma chamber, and become independent liberated bits called "xenoliths."



  39. Olivine phenocrysts

    Snapshot Title: Olivine phenocrysts
    Taken by: Callan Bentley

    Image: Porphyritic Vesicular Basalt from Ka Lae, Hawaii
    Image Owner: Callan Bentley



    Description:

    and vesicles



  40. Axial planar cleavage

    Snapshot Title: Axial planar cleavage
    Taken by: Callan Bentley

    Image: South Fort Valley Antiform
    Image Owner: Alan Pitts



    Description:

    Lovely structure within a structure.



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