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Callan Bentley's Snapshots

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  1. Bucket

    Snapshot Title: Bucket
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#1 of 8)
    Image Owner: Callan Bentley



    Description:

    We used this bucket to slosh Bay water over the outcrop and clean it.



  2. Look closer

    Snapshot Title: Look closer
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#1 of 8)
    Image Owner: Callan Bentley



    Description:

    The right (north) half of this outcrop was imaged separately, closer up (and hence in more detail) here:
    gigapan.com/gigapans/124804



  3. Scale pencil

    Snapshot Title: Scale pencil
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#1 of 8)
    Image Owner: Callan Bentley



    Description:

    Black bars along the side of this yellow mechanical pencil are each 1 centimeter in length.



  4. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#1 of 8)
    Image Owner: Callan Bentley



    Description:

    Each of the rectangles on this reference stick are 10 cm long (tall).



  5. Buried alive

    Snapshot Title: Buried alive
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#3 of 8)
    Image Owner: Callan Bentley



    Description:

    The articulation of these valves suggests that this clam was buried whole, and didn't have a chance to rot or have its valves (shells) disarticulated before burial. Maybe it was even buried alive!



  6. Whale rib

    Snapshot Title: Whale rib
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#3 of 8)
    Image Owner: Callan Bentley



    Description:

    This is a partial excavation around a whale rib that extends back into the face of the cliff.



  7. Charcoal

    Snapshot Title: Charcoal
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#3 of 8)
    Image Owner: Callan Bentley



    Description:

    A large piece of Miocene charcoal is present in this deposit.



  8. 10 cm

    Snapshot Title: 10 cm
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#3 of 8)
    Image Owner: Callan Bentley



    Description:

    The long sides of these rectangles are 10 centimeters in length.



  9. Scale pencil

    Snapshot Title: Scale pencil
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#3 of 8)
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil (obliquely viewed) with centimeters marked along the side.



  10. Quartz

    Snapshot Title: Quartz
    Taken by: Callan Bentley

    Image: Porphyroblastic Turkish blueschist
    Image Owner: Callan Bentley



    Description:

    clear and glassy



  11. Preferred alignment

    Snapshot Title: Preferred alignment
    Taken by: Callan Bentley

    Image: Porphyroblastic Turkish blueschist
    Image Owner: Callan Bentley



    Description:

    Some areas show a mineral lineation (on the plane of foliation) defined by aligned glaucophane (amphibole) needles.



  12. 1 cm

    Snapshot Title: 1 cm
    Taken by: Callan Bentley

    Image: Garnet sample
    Image Owner: Callan Bentley



    Description:

    One centimeter, to provided a sense of scale.



  13. Mn-oxide cement

    Snapshot Title: Mn-oxide cement
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    Breccia characterized by a higher proportion of subangular or subrounded clasts, a greater spacing between clasts (it's "matrix supported"), and a dark colored cement.



  14. Scale bar

    Snapshot Title: Scale bar
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    Courtesy of the Virginia Division of Geology and Mineral Resources.



  15. 1 cm

    Snapshot Title: 1 cm
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    sense of scale



  16. Siliceous cement

    Snapshot Title: Siliceous cement
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    Clasts weathering out in 3D.



  17. A collection

    Snapshot Title: A collection
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    of milled clasts



  18. Angular clasts

    Snapshot Title: Angular clasts
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    in close proximity to their neighbors.



  19. "Milled" clasts?

    Snapshot Title: "Milled" clasts?
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    Rounded shapes suggest tectonic "tumbling" and frictionally-induced abrasion of sharp corners.



  20. Clast alignment

    Snapshot Title: Clast alignment
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    significant? coincidence?



  21. Mn,Fe oxide cemented breccia

    Snapshot Title: Mn,Fe oxide cemented breccia
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    Greater spacing between clasts, floating in a dark-colored matrix.



  22. Siliceous-cemented breccia

    Snapshot Title: Siliceous-cemented breccia
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    Closer proximity of clasts, light-colored matrix between them.



  23. 1 inch

    Snapshot Title: 1 inch
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    to provide a sense of scale.



  24. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with centimeters marked along the side.



  25. Qu'est-ce que c'est?

    Snapshot Title: Qu'est-ce que c'est?
    Taken by: Callan Bentley

    Image: Foreknobs Formation- Hunting Ridge 2
    Image Owner: Alan Pitts



    Description:

    Alan, is this ball-&-pillow?



  26. Widmanstätten pattern!

    Snapshot Title: Widmanstätten pattern!
    Taken by: Callan Bentley

    Image: Meteorite: Seymchan Pallasite
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Pallasites are awesome.



  27. Trace fossils

    Snapshot Title: Trace fossils
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils (annotations only)
    Image Owner: Callan Bentley



    Description:

    Annotated with blue lines.
    To see the overlay (annotations + photo), click here: gigapan.com/gigapans/124295To see just the photo (with no annotations), click here:
    gigapan.com/gigapan...



  28. Trace fossils

    Snapshot Title: Trace fossils
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils (annotated)
    Image Owner: Callan Bentley



    Description:

    Annotated with blue lines.



  29. Shadow

    Snapshot Title: Shadow
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils (annotated)
    Image Owner: Callan Bentley



    Description:

    of the GigaPan EPIC Pro



  30. Scale pencil #2

    Snapshot Title: Scale pencil #2
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils (annotated)
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with centimeters marked on the side.



  31. Scale pencil #1

    Snapshot Title: Scale pencil #1
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils (annotated)
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with centimeters marked on the side.



  32. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils (annotated)
    Image Owner: Callan Bentley



    Description:

    The official scale bar of the Virginia Department of Geology and Mineral Resources. Inchest at top, centimeters at the bottom.



  33. Trace fossils

    Snapshot Title: Trace fossils
    Taken by: Callan Bentley

    Image: Massanutten Sandstone with trace fossils
    Image Owner: Callan Bentley



    Description:

    Bedding parallel



  34. Trace fossils

    Snapshot Title: Trace fossils
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils
    Image Owner: Callan Bentley



    Description:

    Bedding-parallel



  35. Shadow

    Snapshot Title: Shadow
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils
    Image Owner: Callan Bentley



    Description:

    of the GigaPan EPIC Pro



  36. Closer

    Snapshot Title: Closer
    Taken by: Callan Bentley

    Image: Massanutten Sandstone with trace fossils
    Image Owner: Callan Bentley



    Description:

    Another GigaPan was shot at closer range of this face. See it here: gigapan.com/gigapans/124277



  37. Scale pencil #2

    Snapshot Title: Scale pencil #2
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with centimeters marked on the side.



  38. Scale pencil #1

    Snapshot Title: Scale pencil #1
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with centimeters marked on the side.



  39. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Massanutten sandstone slab with trace fossils
    Image Owner: Callan Bentley



    Description:

    The official scale bar of the Virginia Department of Geology and Mineral Resources. Inchest at top, centimeters at the bottom.



  40. Scale pencil

    Snapshot Title: Scale pencil
    Taken by: Callan Bentley

    Image: Massanutten Sandstone with trace fossils
    Image Owner: Callan Bentley



    Description:

    Mechanical pencil with centimeters marked on the side.



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