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Callan Bentley's Snapshots

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  1. This edge...

    Snapshot Title: This edge...
    Taken by: Callan Bentley

    Image: Weverton Formation
    Image Owner: Callan Bentley



    Description:

    ...is defined by foliation.



  2. This edge...

    Snapshot Title: This edge...
    Taken by: Callan Bentley

    Image: Weverton Formation
    Image Owner: Callan Bentley



    Description:

    ...is defined by bedding.



  3. Foliation

    Snapshot Title: Foliation
    Taken by: Callan Bentley

    Image: Weverton Formation
    Image Owner: Callan Bentley



    Description:

    Runs at ~45 degrees from lower left to upper right across this sample.



  4. Bedding

    Snapshot Title: Bedding
    Taken by: Callan Bentley

    Image: Weverton Formation
    Image Owner: Callan Bentley



    Description:

    Runs left-to-right across this sample.



  5. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Weverton Formation
    Image Owner: Callan Bentley



    Description:

    1 cm



  6. A closer look

    Snapshot Title: A closer look
    Taken by: Callan Bentley

    Image: Devonian Hampshire, Latest Devonian Spechty Kopf, and lower Mississippian Rockwell formations roadcut on Corridor H, West Virginia
    Image Owner: Callan Bentley



    Description:

    The coal here contains abundant pyrite, as seen in this sample: www.gigapan.com/gigapans/170818



  7. A closer look

    Snapshot Title: A closer look
    Taken by: Callan Bentley

    Image: Slabs of Brallier Formation shale, Paw Paw Tunnel
    Image Owner: Callan Bentley



    Description:

    You can examine a macro GigaPan of chlorite slickensides here:
    www.gigapan.com/gigapans/170768



  8. A closer look

    Snapshot Title: A closer look
    Taken by: Callan Bentley

    Image: Slickensides on slabs of Brallier Formation shale, Paw Paw Tunnel
    Image Owner: Callan Bentley



    Description:

    Examine a hand sample of chlorite slickensides with this macro GigaPan:
    www.gigapan.com/gigapans/170768



  9. Pothole

    Snapshot Title: Pothole
    Taken by: Callan Bentley

    Image: Belle Isle and James River Park, Richmond, Virginia
    Image Owner: Callan Bentley



    Description:

    one of many in this expansive pavement outcrop



  10. Hiking

    Snapshot Title: Hiking
    Taken by: Callan Bentley

    Image: Belle Isle and James River Park, Richmond, Virginia
    Image Owner: Callan Bentley



    Description:

    with a hiking stick



  11. Picking up trash

    Snapshot Title: Picking up trash
    Taken by: Callan Bentley

    Image: Belle Isle and James River Park, Richmond, Virginia
    Image Owner: Callan Bentley



    Description:

    Cleaning up the park!



  12. Cyclists

    Snapshot Title: Cyclists
    Taken by: Callan Bentley

    Image: Belle Isle and James River Park, Richmond, Virginia
    Image Owner: Callan Bentley



    Description:

    Can't imagine they rode across this!



  13. Geopetal

    Snapshot Title: Geopetal
    Taken by: Callan Bentley

    Image: Stromatolites in Helena (Siyeh) Formation Limstone from Alberta, Canada
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Which way is up?



  14. Ostracode

    Snapshot Title: Ostracode
    Taken by: Callan Bentley

    Image: Tonoloway Ostracode Bed
    Image Owner: Callan Bentley



    Description:

    Unusually clean, but with transverse stress fractures.



  15. Ostracode

    Snapshot Title: Ostracode
    Taken by: Callan Bentley

    Image: Tonoloway Ostracode Bed
    Image Owner: Callan Bentley



    Description:

    Partial peel-back of the shell.



  16. Ostracode shell

    Snapshot Title: Ostracode shell
    Taken by: Callan Bentley

    Image: Tonoloway Ostracode Bed
    Image Owner: Callan Bentley



    Description:

    Ostracodes are arthropods with significant "beanlike" shells surrounding their leggy bodies.



  17. 1 cm

    Snapshot Title: 1 cm
    Taken by: Callan Bentley

    Image: Tonoloway Ostracode Bed
    Image Owner: Callan Bentley



    Description:

    Scale bar



  18. Geopetal

    Snapshot Title: Geopetal
    Taken by: Callan Bentley

    Image: Crossbedded Fine Sandstone
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Which way is up?



  19. Geopetal

    Snapshot Title: Geopetal
    Taken by: Callan Bentley

    Image: Crossbedded Fine Sandstone
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Which way is up?



  20. Vein cutting amydule

    Snapshot Title: Vein cutting amydule
    Taken by: Callan Bentley

    Image: Catoctin Formation metabasalt showing amygdules and asbestos veins
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Amygdule (or at least the epidote component of the amygdule) is older in this case than the vein.



  21. Cross-cutting

    Snapshot Title: Cross-cutting
    Taken by: Callan Bentley

    Image: Catoctin Formation metabasalt showing amygdules and asbestos veins
    Image Owner: Robin Rohrback-Schiavone



    Description:

    An interesting blend of cross-cutting relationships here: The big amygdule has no vein cutting across it, but the little one to the right does. Hmmm.



  22. Grinding marks

    Snapshot Title: Grinding marks
    Taken by: Callan Bentley

    Image: Catoctin Formation metabasalt showing amygdules and asbestos veins
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Sloppy work



  23. Asbestiform mineral

    Snapshot Title: Asbestiform mineral
    Taken by: Callan Bentley

    Image: Catoctin Formation metabasalt showing amygdules and asbestos veins
    Image Owner: Robin Rohrback-Schiavone



    Description:

    vein fill



  24. Wakka wakka wakka

    Snapshot Title: Wakka wakka wakka
    Taken by: Callan Bentley

    Image: Catoctin Formation metabasalt showing amygdules and asbestos veins
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Pacman-like vesicle filling of quartz (white) and epidote (green).



  25. Amygdule

    Snapshot Title: Amygdule
    Taken by: Callan Bentley

    Image: Catoctin Formation metabasalt showing amygdules and asbestos veins
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Filled with epidote and quartz



  26. Conchoidal fracture

    Snapshot Title: Conchoidal fracture
    Taken by: Callan Bentley

    Image: Coal
    Image Owner: Robin Rohrback-Schiavone



    Description:

    :)



  27. Count the episodes

    Snapshot Title: Count the episodes
    Taken by: Callan Bentley

    Image: Pisolites in Tansil Formation Limestone, Whites City, New Mexico
    Image Owner: Robin Rohrback-Schiavone



    Description:

    How many phases of growth can you count here?



  28. Vein

    Snapshot Title: Vein
    Taken by: Callan Bentley

    Image: Mudcracks and Gypsum Casts
    Image Owner: Robin Rohrback-Schiavone



    Description:

    of calcite



  29. Mud crack triple junction

    Snapshot Title: Mud crack triple junction
    Taken by: Callan Bentley

    Image: Mudcracks and Gypsum Casts
    Image Owner: Robin Rohrback-Schiavone



    Description:

    .



  30. Gypsum crystal cast

    Snapshot Title: Gypsum crystal cast
    Taken by: Callan Bentley

    Image: Mudcracks and Gypsum Casts
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Evaporite strata



  31. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Mudcracks and Gypsum Casts
    Image Owner: Robin Rohrback-Schiavone



    Description:

    1 cm wide



  32. A closer look

    Snapshot Title: A closer look
    Taken by: Callan Bentley

    Image: Pennsylvanian Alleghanian Formation
    Image Owner: Joshua Benton



    Description:

    Here's a macro GigaPan of a piece of coal collected from this site:
    www.gigapan.com/gigapans/168727



  33. Lithic clast

    Snapshot Title: Lithic clast
    Taken by: Callan Bentley

    Image: Absaroka Volcanic Breccia
    Image Owner: Callan Bentley



    Description:

    Pre-existing igneous material caught up the lahar.



  34. Lithic clast

    Snapshot Title: Lithic clast
    Taken by: Callan Bentley

    Image: Absaroka Volcanic Breccia
    Image Owner: Callan Bentley



    Description:

    Pre-existing igneous material caught up the lahar.



  35. Lithic clast

    Snapshot Title: Lithic clast
    Taken by: Callan Bentley

    Image: Absaroka Volcanic Breccia
    Image Owner: Callan Bentley



    Description:

    Pre-existing igneous material caught up the lahar.



  36. Lithic clast

    Snapshot Title: Lithic clast
    Taken by: Callan Bentley

    Image: Absaroka Volcanic Breccia
    Image Owner: Callan Bentley



    Description:

    Pre-existing igneous material caught up the lahar.



  37. Lithic clast

    Snapshot Title: Lithic clast
    Taken by: Callan Bentley

    Image: Absaroka Volcanic Breccia
    Image Owner: Callan Bentley



    Description:

    Pre-existing igneous material caught up the lahar.



  38. Lithic clast

    Snapshot Title: Lithic clast
    Taken by: Callan Bentley

    Image: Absaroka Volcanic Breccia
    Image Owner: Callan Bentley



    Description:

    Pre-existing igneous material caught up the lahar.



  39. Lithic clast

    Snapshot Title: Lithic clast
    Taken by: Callan Bentley

    Image: Absaroka Volcanic Breccia
    Image Owner: Callan Bentley



    Description:

    Pre-existing igneous material caught up the lahar.



  40. Lithic clast

    Snapshot Title: Lithic clast
    Taken by: Callan Bentley

    Image: Absaroka Volcanic Breccia
    Image Owner: Callan Bentley



    Description:

    Pre-existing igneous material caught up the lahar.



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