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Callan Bentley's Snapshots

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  1. Branching bryozoan

    Snapshot Title: Branching bryozoan
    Taken by: Callan Bentley

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



    Description:

    Little pores all over it.



  2. Fenestrate bryozoan

    Snapshot Title: Fenestrate bryozoan
    Taken by: Callan Bentley

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



    Description:

    Scrap of it, anyhow.



  3. Leptaena

    Snapshot Title: Leptaena
    Taken by: Callan Bentley

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



    Description:

    Articulate brachiopod



  4. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

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



    Description:

    This scale bar is 1 cm long (top to bottom)



  5. What's this?

    Snapshot Title: What's this?
    Taken by: Callan Bentley

    Image: Strophomenid brachiopods
    Image Owner: Callan Bentley



    Description:

    Trace fossils in sediment? Encrusting bryozoan?



  6. Crinoid stem

    Snapshot Title: Crinoid stem
    Taken by: Callan Bentley

    Image: Strophomenid brachiopods
    Image Owner: Callan Bentley



    Description:

    A second example.



  7. Crinoid stem

    Snapshot Title: Crinoid stem
    Taken by: Callan Bentley

    Image: Strophomenid brachiopods
    Image Owner: Callan Bentley



    Description:

    It's not just brachiopods in these rocks!



  8. Orthotetes

    Snapshot Title: Orthotetes
    Taken by: Callan Bentley

    Image: Strophomenid brachiopods
    Image Owner: Callan Bentley



    Description:

    (brachiopod specimen number 2)



  9. Orthotetes

    Snapshot Title: Orthotetes
    Taken by: Callan Bentley

    Image: Strophomenid brachiopods
    Image Owner: Callan Bentley



    Description:

    (brachiopod specimen number 1)



  10. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Strophomenid brachiopods
    Image Owner: Callan Bentley



    Description:

    This black bar is 1 cm long.



  11. Rounding

    Snapshot Title: Rounding
    Taken by: Callan Bentley

    Image: Rounded cobble of intrusion breccia
    Image Owner: Callan Bentley



    Description:

    Indicating some substantial amount of transport.



  12. Lighter colored material

    Snapshot Title: Lighter colored material
    Taken by: Callan Bentley

    Image: Rounded cobble of intrusion breccia
    Image Owner: Callan Bentley



    Description:

    Representing subsequent intrusion.



  13. Phenocryst

    Snapshot Title: Phenocryst
    Taken by: Callan Bentley

    Image: Rounded cobble of intrusion breccia
    Image Owner: Callan Bentley



    Description:

    in porphyry that was then shattered and intruded.



  14. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Rounded cobble of intrusion breccia
    Image Owner: Callan Bentley



    Description:

    This bar is 1 cm long.



  15. Quartz

    Snapshot Title: Quartz
    Taken by: Callan Bentley

    Image: Gneiss
    Image Owner: Callan Bentley



    Description:

    Vitreous and translucent



  16. Garnet

    Snapshot Title: Garnet
    Taken by: Callan Bentley

    Image: Gneiss
    Image Owner: Callan Bentley



    Description:

    Big and bold, like a fine merlot



  17. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Gneiss
    Image Owner: Callan Bentley



    Description:

    1 cm long scale bar on pencil



  18. Hairy cone

    Snapshot Title: Hairy cone
    Taken by: Callan Bentley

    Image: Coneplant
    Image Owner: Callan Bentley



    Description:

    This cone had lots of little flanges coming off of it.



  19. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Coneplant
    Image Owner: Callan Bentley



    Description:

    A single scale on the cone.



  20. Cone

    Snapshot Title: Cone
    Taken by: Callan Bentley

    Image: Coneplant
    Image Owner: Callan Bentley



    Description:

    Gymnosperm cone



  21. Locality info

    Snapshot Title: Locality info
    Taken by: Callan Bentley

    Image: Coneplant
    Image Owner: Callan Bentley



    Description:

    Where the sample was collected.



  22. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Coneplant
    Image Owner: Callan Bentley



    Description:

    1 cm



  23. Lineation

    Snapshot Title: Lineation
    Taken by: Callan Bentley

    Image: Basement complex, MP 16.3 on I-66 (westbound), east of Linden, Virginia
    Image Owner: Callan Bentley



    Description:

    The imaged surface of this sample is the plane of foliation. These lines on that plane are a mineral lineation. Overall, the sample is an L>S tectonic.



  24. Vein

    Snapshot Title: Vein
    Taken by: Callan Bentley

    Image: Basement complex, MP 16.3 on I-66 (westbound), east of Linden, Virginia
    Image Owner: Callan Bentley



    Description:

    Fibrous chlorite and quartz filling an extensional vein. Fibers presumably aligned with extensional direction.



  25. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Basement complex, MP 16.3 on I-66 (westbound), east of Linden, Virginia
    Image Owner: Callan Bentley



    Description:

    This black bar is 1 cm in length (top to bottom).



  26. Crinoid columnal stem

    Snapshot Title: Crinoid columnal stem
    Taken by: Callan Bentley

    Image: Martinsburg Fm. crinoids and brachiopods
    Image Owner: Callan Bentley



    Description:

    Side view



  27. Self-recursive

    Snapshot Title: Self-recursive
    Taken by: Callan Bentley

    Image: Martinsburg Fm. crinoids and brachiopods
    Image Owner: Callan Bentley



    Description:

    Crinoid columnal inside a larger crinoid columnal.



  28. Bryozoan

    Snapshot Title: Bryozoan
    Taken by: Callan Bentley

    Image: Martinsburg Fm. crinoids and brachiopods
    Image Owner: Callan Bentley



    Description:

    Branching morphology



  29. Brachiopod

    Snapshot Title: Brachiopod
    Taken by: Callan Bentley

    Image: Martinsburg Fm. crinoids and brachiopods
    Image Owner: Callan Bentley



    Description:

    Big one.



  30. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Martinsburg Fm. crinoids and brachiopods
    Image Owner: Callan Bentley



    Description:

    This bar is 1 cm long.



  31. Crinoid columnal impression

    Snapshot Title: Crinoid columnal impression
    Taken by: Callan Bentley

    Image: Passage Creek Fauna of the Martinsburg Formation
    Image Owner: Callan Bentley



    Description:

    Echinoderm stem segment.



  32. Brachiopod

    Snapshot Title: Brachiopod
    Taken by: Callan Bentley

    Image: Passage Creek Fauna of the Martinsburg Formation
    Image Owner: Callan Bentley



    Description:

    Some sort of articulate brachiopod.



  33. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Passage Creek Fauna of the Martinsburg Formation
    Image Owner: Callan Bentley



    Description:

    1 cm long bar



  34. Brachiopod

    Snapshot Title: Brachiopod
    Taken by: Callan Bentley

    Image: Fossils in the Martinsburg Formation
    Image Owner: Callan Bentley



    Description:

    Strophomenid?



  35. Shell

    Snapshot Title: Shell
    Taken by: Callan Bentley

    Image: Fossils in the Martinsburg Formation
    Image Owner: Callan Bentley



    Description:

    Original/recrystallized CaCO3 shell material?



  36. Crinoid stem

    Snapshot Title: Crinoid stem
    Taken by: Callan Bentley

    Image: Fossils in the Martinsburg Formation
    Image Owner: Callan Bentley



    Description:

    Poking up, plunging to upper right.



  37. Nautiloid

    Snapshot Title: Nautiloid
    Taken by: Callan Bentley

    Image: Fossils in the Martinsburg Formation
    Image Owner: Callan Bentley



    Description:

    With "crushing crease" running longitudinally down the length of its cone.



  38. Brachiopod

    Snapshot Title: Brachiopod
    Taken by: Callan Bentley

    Image: Fossils in the Martinsburg Formation
    Image Owner: Callan Bentley



    Description:

    Strophomenid?



  39. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Fossils in the Martinsburg Formation
    Image Owner: Callan Bentley



    Description:

    This black bar is 1 cm "tall".



  40. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Anorthosite, Adirondack Mountains, New York
    Image Owner: Callan Bentley



    Description:

    Bars on the pencil are 1 cm in length.



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