1. Skip to navigation
  2. Skip to content
  3. Skip to sidebar


Callan Bentley's Snapshots

Go to page:
  1. Impurities / flow banding

    Snapshot Title: Impurities / flow banding
    Taken by: Callan Bentley

    Image: Obsidian trio
    Image Owner: Callan Bentley



    Description:

    And pretty colors



  2. Two conchoidal fractures

    Snapshot Title: Two conchoidal fractures
    Taken by: Callan Bentley

    Image: Obsidian trio
    Image Owner: Callan Bentley



    Description:

    Approaching one another back to back



  3. Conchoidal fracture

    Snapshot Title: Conchoidal fracture
    Taken by: Callan Bentley

    Image: Obsidian trio
    Image Owner: Callan Bentley



    Description:

    Scoop shaped



  4. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Obsidian trio
    Image Owner: Callan Bentley



    Description:

    1 cm wide blue bar



  5. Plagioclase?

    Snapshot Title: Plagioclase?
    Taken by: Callan Bentley

    Image: Peridotite from the Josephine Ophiolite
    Image Owner: Robin Rohrback-Schiavone



    Description:

    striations...



  6. Pyroxene

    Snapshot Title: Pyroxene
    Taken by: Callan Bentley

    Image: Peridotite from the Josephine Ophiolite
    Image Owner: Robin Rohrback-Schiavone



    Description:

    .



  7. Plagioclase

    Snapshot Title: Plagioclase
    Taken by: Callan Bentley

    Image: Porphyritic andesite, Crazy Mountains, Montana
    Image Owner: Callan Bentley



    Description:

    feldspar



  8. Vesicle

    Snapshot Title: Vesicle
    Taken by: Callan Bentley

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



    Description:

    Hole from degassing



  9. Olivine

    Snapshot Title: Olivine
    Taken by: Callan Bentley

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



    Description:

    .



  10. Gneiss

    Snapshot Title: Gneiss
    Taken by: Callan Bentley

    Image: Rock Garden
    Image Owner: Callan Bentley



    Description:

    Collection location unknown.



  11. Mudcracks

    Snapshot Title: Mudcracks
    Taken by: Callan Bentley

    Image: Rock Garden
    Image Owner: Callan Bentley



    Description:

    Silurian-aged Tonoloway Formation carbonates, old quarry on old Route 55, West Virginia. Close-up of outcrop:
    gigapan.com/gigapans/90685



  12. Brachipods

    Snapshot Title: Brachipods
    Taken by: Callan Bentley

    Image: Rock Garden
    Image Owner: Callan Bentley



    Description:

    In Oriskany Formation standstone, Corridor H, West Virginia



  13. Quartzite

    Snapshot Title: Quartzite
    Taken by: Callan Bentley

    Image: Rock Garden
    Image Owner: Callan Bentley



    Description:

    Weverton Formation, Thoroughfare Gap, Virginia.



  14. Plant fossils

    Snapshot Title: Plant fossils
    Taken by: Callan Bentley

    Image: Rock Garden
    Image Owner: Callan Bentley



    Description:

    Pennsylvanian-aged Allegheny Formation, edge of Appalachian Plateau, Corridor H, West Virginia.



  15. Bedding / cleavage

    Snapshot Title: Bedding / cleavage
    Taken by: Callan Bentley

    Image: Rock Garden
    Image Owner: Callan Bentley



    Description:

    Widely-spaced cleavage cutting-across bedding in Devonian-aged Helderberg limestone, Corridor H, West Virginia.



  16. Sag pillow

    Snapshot Title: Sag pillow
    Taken by: Callan Bentley

    Image: Rock Garden
    Image Owner: Callan Bentley



    Description:

    Sandstone "ball and pillow" structure from redbeds of Devonian Hampshire Formation, Corridor H, West Virginia. Close-up:
    www.gigapan.com/gigapans/146668



  17. "Ploudin"

    Snapshot Title: "Ploudin"
    Taken by: Callan Bentley

    Image: Rock Garden
    Image Owner: Callan Bentley



    Description:

    Boudin / Sag pillow from latest Devonian Spechty Kopf diamictite, Corridor H, West Virginia.



  18. Greenschist

    Snapshot Title: Greenschist
    Taken by: Callan Bentley

    Image: Rock Garden
    Image Owner: Callan Bentley



    Description:

    Catoctin Formation



  19. Tempestite

    Snapshot Title: Tempestite
    Taken by: Callan Bentley

    Image: Rock Garden
    Image Owner: Callan Bentley



    Description:

    Limestone, Devonian of West Virginia



  20. Arkose

    Snapshot Title: Arkose
    Taken by: Callan Bentley

    Image: Rock Garden
    Image Owner: Callan Bentley



    Description:

    from Culpeper Basin



  21. Cockeysville

    Snapshot Title: Cockeysville
    Taken by: Callan Bentley

    Image: Rock Garden
    Image Owner: Callan Bentley



    Description:

    Marble



  22. Slickensides

    Snapshot Title: Slickensides
    Taken by: Callan Bentley

    Image: Rock Garden
    Image Owner: Callan Bentley



    Description:

    .



  23. Fault / vein

    Snapshot Title: Fault / vein
    Taken by: Callan Bentley

    Image: Fossiliferous limestone
    Image Owner: Callan Bentley



    Description:

    Offset and extension (dilation)



  24. Stylolite "steps"

    Snapshot Title: Stylolite "steps"
    Taken by: Callan Bentley

    Image: Fossiliferous limestone
    Image Owner: Callan Bentley



    Description:

    Pressure solution's signature



  25. Finer sediment

    Snapshot Title: Finer sediment
    Taken by: Callan Bentley

    Image: Fossiliferous limestone
    Image Owner: Callan Bentley



    Description:

    Limy mud filling shell is significantly finer than that outside the shell.



  26. Geopetal

    Snapshot Title: Geopetal
    Taken by: Callan Bentley

    Image: Fossiliferous limestone
    Image Owner: Callan Bentley



    Description:

    Yet another example for figuring out which way was up during the time of deposition.



  27. Faulted shell

    Snapshot Title: Faulted shell
    Taken by: Callan Bentley

    Image: Fossiliferous limestone
    Image Owner: Callan Bentley



    Description:

    Offset and dilation



  28. Stylolite

    Snapshot Title: Stylolite
    Taken by: Callan Bentley

    Image: Fossiliferous limestone
    Image Owner: Callan Bentley



    Description:

    Pressure solution seam



  29. Fault

    Snapshot Title: Fault
    Taken by: Callan Bentley

    Image: Fossiliferous limestone
    Image Owner: Callan Bentley



    Description:

    Small offset



  30. Geopetal

    Snapshot Title: Geopetal
    Taken by: Callan Bentley

    Image: Fossiliferous limestone
    Image Owner: Callan Bentley



    Description:

    Another half-sediment-filled (lower half), half-sparry-calcite-cement-filled (upper half) shell.



  31. Partly sediment-filled shell

    Snapshot Title: Partly sediment-filled shell
    Taken by: Callan Bentley

    Image: Fossiliferous limestone
    Image Owner: Callan Bentley



    Description:

    Geopetal structure - upper half of space is filled with sparry calcite.



  32. Fossilized lophophore

    Snapshot Title: Fossilized lophophore
    Taken by: Callan Bentley

    Image: Fossiliferous limestone
    Image Owner: Callan Bentley



    Description:

    gray material inside shell?



  33. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Fossiliferous limestone
    Image Owner: Callan Bentley



    Description:

    Blue bar is 1 cm wide.



  34. Potassium feldspar

    Snapshot Title: Potassium feldspar
    Taken by: Callan Bentley

    Image: Porphyritic andesite
    Image Owner: Callan Bentley



    Description:

    White/tan/pinkish and blocky



  35. Amphibole

    Snapshot Title: Amphibole
    Taken by: Callan Bentley

    Image: Porphyritic andesite
    Image Owner: Callan Bentley



    Description:

    Black prisms



  36. Biotite

    Snapshot Title: Biotite
    Taken by: Callan Bentley

    Image: Porphyritic andesite
    Image Owner: Callan Bentley



    Description:

    Brown, splitting along cleavage planes like the pages of a book.



  37. Potassium feldspar

    Snapshot Title: Potassium feldspar
    Taken by: Callan Bentley

    Image: Unakite
    Image Owner: Callan Bentley



    Description:

    Pink



  38. Quartz

    Snapshot Title: Quartz
    Taken by: Callan Bentley

    Image: Unakite
    Image Owner: Callan Bentley



    Description:

    gray to purple



  39. Epidote

    Snapshot Title: Epidote
    Taken by: Callan Bentley

    Image: Unakite
    Image Owner: Callan Bentley



    Description:

    Green



  40. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Unakite
    Image Owner: Callan Bentley



    Description:

    1 cm wide blue bar



Go to page: