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Callan Bentley's Snapshots

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  1. Groundmass

    Snapshot Title: Groundmass
    Taken by: Callan Bentley

    Image: Amydular (amygdaloidal) Catoctin Formation meta-basalt, Blue Ridge, Virginia
    Image Owner: Callan Bentley



    Description:

    Aphanitic texture



  2. Geopetal V

    Snapshot Title: Geopetal V
    Taken by: Callan Bentley

    Image: Amydular (amygdaloidal) Catoctin Formation meta-basalt, Blue Ridge, Virginia
    Image Owner: Callan Bentley



    Description:

    Jasper is first to be precipitated in the "stratigraphy" of the amygdule filling.



  3. Geopetal indicator IV

    Snapshot Title: Geopetal indicator IV
    Taken by: Callan Bentley

    Image: Amydular (amygdaloidal) Catoctin Formation meta-basalt, Blue Ridge, Virginia
    Image Owner: Callan Bentley



    Description:

    Jasper is first to be precipitated in the "stratigraphy" of the amygdule filling.



  4. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Amydular (amygdaloidal) Catoctin Formation meta-basalt, Blue Ridge, Virginia
    Image Owner: Callan Bentley



    Description:

    1 cm long



  5. Two more

    Snapshot Title: Two more
    Taken by: Callan Bentley

    Image: Amydular (amygdaloidal) Catoctin Formation meta-basalt, Blue Ridge, Virginia
    Image Owner: Callan Bentley



    Description:

    Apparent geopetal indicators.



  6. Jasper geopetal indicator

    Snapshot Title: Jasper geopetal indicator
    Taken by: Callan Bentley

    Image: Amydular (amygdaloidal) Catoctin Formation meta-basalt, Blue Ridge, Virginia
    Image Owner: Callan Bentley



    Description:

    Jasper lining the "bottom" of the vesicle void.



  7. Phenocryst

    Snapshot Title: Phenocryst
    Taken by: Callan Bentley

    Image: Amydular (amygdaloidal) Catoctin Formation meta-basalt, Blue Ridge, Virginia
    Image Owner: Callan Bentley



    Description:

    Plagioclase



  8. Paleo-level

    Snapshot Title: Paleo-level
    Taken by: Callan Bentley

    Image: Amydular (amygdaloidal) Catoctin Formation meta-basalt, Blue Ridge, Virginia
    Image Owner: Callan Bentley



    Description:

    and geopetal indicator (horizontal "top" to jasper deposit...



  9. Shell full of shells

    Snapshot Title: Shell full of shells
    Taken by: Callan Bentley

    Image: Brachiopod fauna of the Nealmont Formation
    Image Owner: Callan Bentley



    Description:

    Brachiopod shell with many other fossils filling its interior.



  10. Bryozoan

    Snapshot Title: Bryozoan
    Taken by: Callan Bentley

    Image: Brachiopod fauna of the Nealmont Formation
    Image Owner: Callan Bentley



    Description:

    Little fenestrae



  11. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Brachiopod fauna of the Nealmont Formation
    Image Owner: Callan Bentley



    Description:

    This is 1 cm wide.



  12. Where the pencil was manufactured

    Snapshot Title: Where the pencil was manufactured
    Taken by: Callan Bentley

    Image: Meta-komatiite
    Image Owner: Callan Bentley



    Description:

    CHINA



  13. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Meta-komatiite
    Image Owner: Callan Bentley



    Description:

    This is 1 cm.



  14. Strophomenid

    Snapshot Title: Strophomenid
    Taken by: Callan Bentley

    Image: Brachiopod fauna of the Nealmont Formation, Germany Valley, West Virginia
    Image Owner: Callan Bentley



    Description:

    classic



  15. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Brachiopod fauna of the Nealmont Formation, Germany Valley, West Virginia
    Image Owner: Callan Bentley



    Description:

    This is 1 cm wide.



  16. Contact

    Snapshot Title: Contact
    Taken by: Callan Bentley

    Image: Feeder dike(s) of the Catoctin Formation, exposed at Littlle Devil's Stairs Overlook, Skyline Drive, Shenandoah National Park, Virginia
    Image Owner: Callan Bentley



    Description:

    Coarse-grained Grenvillian (Mesoproterozoic) granitoid to the upper left; fine-grained Catoctin basalt dike (Neoproterozoic) to lower right.



  17. Scale pencil
  18. Scale
  19. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Brachiopod fauna of the Nealmont Formation, Germany Valley, WVA
    Image Owner: Callan Bentley



    Description:

    1 cm



  20. Mucrospirifer

    Snapshot Title: Mucrospirifer
    Taken by: Callan Bentley

    Image: Mahantango Formation, showing fossil brachiopod fauna
    Image Owner: Callan Bentley



    Description:

    articulate brachiopods, diagnostic of the Devonian.



  21. Crinoid

    Snapshot Title: Crinoid
    Taken by: Callan Bentley

    Image: Mahantango Formation, showing fossil brachiopod fauna
    Image Owner: Callan Bentley



    Description:

    columnal impression



  22. "A"

    Snapshot Title: "A"
    Taken by: Callan Bentley

    Image: Mahantango Formation, showing fossil brachiopod fauna
    Image Owner: Callan Bentley



    Description:

    The "A" in "MADE IN CHINA"



  23. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Mahantango Formation, showing fossil brachiopod fauna
    Image Owner: Callan Bentley



    Description:

    1 cm from left to right.



  24. "A"

    Snapshot Title: "A"
    Taken by: Callan Bentley

    Image: Diaphragmus brachiopod fossils from the Reynolds Limestone member of the Mauch Chunk Formation, Corridor H, West Virginia
    Image Owner: Callan Bentley



    Description:

    The "A" in the MADE IN CHINA label on the pencil.



  25. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Diaphragmus brachiopod fossils from the Reynolds Limestone member of the Mauch Chunk Formation, Corridor H, West Virginia
    Image Owner: Callan Bentley



    Description:

    This scale bar is 1 cm long, left to right.



  26. Micro plumose structure

    Snapshot Title: Micro plumose structure
    Taken by: Callan Bentley

    Image: Hornblende at 1950x
    Image Owner: Robin Rohrback



    Description:

    Jumping across a space where cleavage planes can't help accommodate the brittle strain.



  27. Hexacoral

    Snapshot Title: Hexacoral
    Taken by: Callan Bentley

    Image: Devonian coral
    Image Owner: Callan Bentley



    Description:

    calcite in siliceous mudrock.



  28. Breccia

    Snapshot Title: Breccia
    Taken by: Callan Bentley

    Image: Corona Heights Fault, San Francisco
    Image Owner: Callan Bentley



    Description:

    Crushed up rock that formed along the fault zone and in places is stuck to the fault surface. Macro GigaPan of samples collected at the site: gigapan.com/gigapans/185868



  29. Breccia

    Snapshot Title: Breccia
    Taken by: Callan Bentley

    Image: Corona Heights Fault, San Francisco
    Image Owner: Callan Bentley



    Description:

    Crushed up rock that formed along the fault zone and in places is stuck to the fault surface. Macro GigaPan of samples collected at the site: gigapan.com/gigapans/185868



  30. Breccia

    Snapshot Title: Breccia
    Taken by: Callan Bentley

    Image: Corona Heights Fault, San Francisco
    Image Owner: Callan Bentley



    Description:

    Crushed up rock that formed along the fault zone and in places is stuck to the fault surface. Macro GigaPan of samples collected at the site:
    gigapan.com/gigapans/185868



  31. Breccia

    Snapshot Title: Breccia
    Taken by: Callan Bentley

    Image: Corona Heights Fault, San Francisco
    Image Owner: Callan Bentley



    Description:

    This rough patch is fault breccia - crushed up rock that formed along the fault and in places remains stuck to it. Sample macro GigaPan:
    gigapan.com/gigapans/185868



  32. Brecciated green chert

    Snapshot Title: Brecciated green chert
    Taken by: Callan Bentley

    Image: Brecciated chert, Corona Heights Fault, San Francisco, California
    Image Owner: Callan Bentley



    Description:

    Crushed by the Corona Heights fault.



  33. Brecciated red chert

    Snapshot Title: Brecciated red chert
    Taken by: Callan Bentley

    Image: Brecciated chert, Corona Heights Fault, San Francisco, California
    Image Owner: Callan Bentley



    Description:

    Crushed by the Corona Heights fault.



  34. Relatively undeformed green chert

    Snapshot Title: Relatively undeformed green chert
    Taken by: Callan Bentley

    Image: Brecciated chert, Corona Heights Fault, San Francisco, California
    Image Owner: Callan Bentley



    Description:

    For comparison.



  35. Relatively undeformed red chert

    Snapshot Title: Relatively undeformed red chert
    Taken by: Callan Bentley

    Image: Brecciated chert, Corona Heights Fault, San Francisco, California
    Image Owner: Callan Bentley



    Description:

    For comparison.



  36. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Brecciated chert, Corona Heights Fault, San Francisco, California
    Image Owner: Callan Bentley



    Description:

    1 cm



  37. Trilobite?

    Snapshot Title: Trilobite?
    Taken by: Callan Bentley

    Image: Bryozoan rich limestone
    Image Owner: Callan Bentley



    Description:

    Bit of the cheek "horn"?



  38. Fenestrate bryozoan

    Snapshot Title: Fenestrate bryozoan
    Taken by: Callan Bentley

    Image: Bryozoan rich limestone
    Image Owner: Callan Bentley



    Description:

    "Little windows"



  39. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Bryozoan rich limestone
    Image Owner: Callan Bentley



    Description:

    1 cm long bar.



  40. Crinoid stem

    Snapshot Title: Crinoid stem
    Taken by: Callan Bentley

    Image: Leptaena brachipod in fossiliferous limestone
    Image Owner: Callan Bentley



    Description:

    Columnal



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