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Callan Bentley's Snapshots

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  1. Scratched clast

    Snapshot Title: Scratched clast
    Taken by: Callan Bentley

    Image: Spechty Kopf Diamictite, exposed on Corridor H, West Virginia (second berm)
    Image Owner: Callan Bentley



    Description:

    Linear scratches at several orientations are visible.



  2. Two clasts

    Snapshot Title: Two clasts
    Taken by: Callan Bentley

    Image: Spechty Kopf Diamictite, exposed on Corridor H, West Virginia (second berm)
    Image Owner: Callan Bentley



    Description:

    set in the muddy matrix



  3. Outsized clast

    Snapshot Title: Outsized clast
    Taken by: Callan Bentley

    Image: Spechty Kopf Diamictite, exposed on Corridor H, West Virginia (second berm)
    Image Owner: Callan Bentley



    Description:

    Possible dropstone.



  4. Nice example of a faceted clast

    Snapshot Title: Nice example of a faceted clast
    Taken by: Callan Bentley

    Image: Spechty Kopf Diamictite, exposed on Corridor H, West Virginia (second berm)
    Image Owner: Callan Bentley



    Description:

    Too bad it's so goddamn blurry.



  5. Outsized clast

    Snapshot Title: Outsized clast
    Taken by: Callan Bentley

    Image: Spechty Kopf Diamictite, exposed on Corridor H, West Virginia (second berm)
    Image Owner: Callan Bentley



    Description:

    (possible dropstone)



  6. Articulate brachiopod

    Snapshot Title: Articulate brachiopod
    Taken by: Callan Bentley

    Image: Greenops boothi (?) trilobite pygidium
    Image Owner: Callan Bentley



    Description:

    Ribs seems to show small crenulations.



  7. Trilobite pygidium

    Snapshot Title: Trilobite pygidium
    Taken by: Callan Bentley

    Image: Greenops boothi (?) trilobite pygidium
    Image Owner: Callan Bentley



    Description:

    Distinctive flanges coming off the sides.



  8. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Greenops boothi (?) trilobite pygidium
    Image Owner: Callan Bentley



    Description:

    1 cm wide



  9. Bird

    Snapshot Title: Bird
    Taken by: Callan Bentley

    Image: Petroglyph Panel along Little Colorado River, Arizona
    Image Owner: rmark



    Description:

    Soaring jauntily along



  10. Chesapecten nefrens

    Snapshot Title: Chesapecten nefrens
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#4 of 8)
    Image Owner: Callan Bentley



    Description:

    (I think)



  11. Chesapecten nefrens

    Snapshot Title: Chesapecten nefrens
    Taken by: Callan Bentley

    Image: Calvert Formation, Scientists' Cliffs, Maryland (#7 of 8)
    Image Owner: Callan Bentley



    Description:

    (I think)



  12. Nautiloid

    Snapshot Title: Nautiloid
    Taken by: Callan Bentley

    Image: Fossiliferous siltstone (Martinsburg Fm??) with prolific fossils
    Image Owner: Callan Bentley



    Description:

    Straight-shelled orthocone



  13. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Fossiliferous siltstone (Martinsburg Fm??) with prolific fossils
    Image Owner: Callan Bentley



    Description:

    1 cm



  14. Sutures

    Snapshot Title: Sutures
    Taken by: Callan Bentley

    Image: Ammonoid
    Image Owner: Robin Rohrback



    Description:

    Ammonitic suture pattern. Jurassic to Cretaceous.



  15. Notebook

    Snapshot Title: Notebook
    Taken by: Callan Bentley

    Image: Bergton Thrust Fault - Greenland Gap Group
    Image Owner: Marissa Dudek



    Description:

    for scale



  16. Flat, round brachs

    Snapshot Title: Flat, round brachs
    Taken by: Callan Bentley

    Image: Brachiopod Body Fossils in the Ridgeley Sandstone, LaVale, MD
    Image Owner: Robin Rohrback



    Description:

    Strophomenids??



  17. Brachiopod

    Snapshot Title: Brachiopod
    Taken by: Callan Bentley

    Image: Brachiopod Body Fossils in the Ridgeley Sandstone, LaVale, MD
    Image Owner: Robin Rohrback



    Description:

    Spiriferid of some sort



  18. Cleavage

    Snapshot Title: Cleavage
    Taken by: Callan Bentley

    Image: Harpers Formation, Harpers Ferry, West Virginia
    Image Owner: Callan Bentley



    Description:

    Dips to the right (southeast) at 20°



  19. Bedding

    Snapshot Title: Bedding
    Taken by: Callan Bentley

    Image: Harpers Formation, Harpers Ferry, West Virginia
    Image Owner: Callan Bentley



    Description:

    Dips toward the right (southeast) at ~47°



  20. Pencil for scale

    Snapshot Title: Pencil for scale
    Taken by: Callan Bentley

    Image: Harpers Formation, Harpers Ferry, West Virginia
    Image Owner: Callan Bentley



    Description:

    1 cm black bars along its length.



  21. Contact

    Snapshot Title: Contact
    Taken by: Callan Bentley

    Image: Tumbling Run
    Image Owner: Callan Bentley



    Description:

    Top of the New Market; Bottom of the Lincolnshire.



  22. Dike?

    Snapshot Title: Dike?
    Taken by: Callan Bentley

    Image: Wyler Aerial Tramway
    Image Owner: Joshua Villalobos



    Description:

    Josh - this looks like a basaltic dike cutting through the Red Bluff Granite. Am I reading that right?



  23. Striations

    Snapshot Title: Striations
    Taken by: Callan Bentley

    Image: Sand from Halls Lake, Ontario, Canada
    Image Owner: Robin Rohrback



    Description:

    Plagioclase!



  24. Abandoned meander

    Snapshot Title: Abandoned meander
    Taken by: Callan Bentley

    Image: LiDAR view of the Northern Fort Valley and Massanutten Mountain
    Image Owner: Callan Bentley



    Description:

    gorgeous



  25. Small meander cutoff

    Snapshot Title: Small meander cutoff
    Taken by: Callan Bentley

    Image: LiDAR view of the Northern Fort Valley and Massanutten Mountain
    Image Owner: Callan Bentley



    Description:

    ?



  26. Levees

    Snapshot Title: Levees
    Taken by: Callan Bentley

    Image: LiDAR view of the Northern Fort Valley and Massanutten Mountain
    Image Owner: Callan Bentley



    Description:

    These stream channels seem to sport a pair of levees on either bank.



  27. Terrace?

    Snapshot Title: Terrace?
    Taken by: Callan Bentley

    Image: LiDAR view of the Northern Fort Valley and Massanutten Mountain
    Image Owner: Callan Bentley



    Description:

    Little mesa-like erosional remnant of former deposit.



  28. Fold hinge

    Snapshot Title: Fold hinge
    Taken by: Callan Bentley

    Image: LiDAR view of the Northern Fort Valley and Massanutten Mountain
    Image Owner: Callan Bentley



    Description:

    Wow - what detail!!



  29. State fish hatchery

    Snapshot Title: State fish hatchery
    Taken by: Callan Bentley

    Image: LiDAR view of the Northern Fort Valley and Massanutten Mountain
    Image Owner: Callan Bentley



    Description:

    Geometric ponds



  30. Braided channels

    Snapshot Title: Braided channels
    Taken by: Callan Bentley

    Image: LiDAR view of the Northern Fort Valley and Massanutten Mountain
    Image Owner: Callan Bentley



    Description:

    Where Passage Creek emerges from the constraints of the Massanutten ridge system.



  31. Helderberg?

    Snapshot Title: Helderberg?
    Taken by: Callan Bentley

    Image: Sediment from Passage Creek, Fort Valley, Virginia
    Image Owner: Callan Bentley



    Description:

    This could be Helderberg limestone, based on the gray color and scratches.



  32. Iron oxide stained Massanutten

    Snapshot Title: Iron oxide stained Massanutten
    Taken by: Callan Bentley

    Image: Sediment from Passage Creek, Fort Valley, Virginia
    Image Owner: Callan Bentley



    Description:

    Some portions of the Massanutten Sandstone are very rusty.



  33. Massanutten Sandstone

    Snapshot Title: Massanutten Sandstone
    Taken by: Callan Bentley

    Image: Sediment from Passage Creek, Fort Valley, Virginia
    Image Owner: Callan Bentley



    Description:

    quartz arenite - source of most of the quartz sand grains in this sample, but here's a lithic fragment.



  34. Bloomsburg

    Snapshot Title: Bloomsburg
    Taken by: Callan Bentley

    Image: Sediment from Passage Creek, Fort Valley, Virginia
    Image Owner: Callan Bentley



    Description:

    Classic red pebble



  35. Snail shell

    Snapshot Title: Snail shell
    Taken by: Callan Bentley

    Image: Sediment from Passage Creek, Fort Valley, Virginia
    Image Owner: Callan Bentley



    Description:

    Local freshwater snail, presumably - not fossil



  36. Angular quartz grain

    Snapshot Title: Angular quartz grain
    Taken by: Callan Bentley

    Image: Sediment from Passage Creek, Fort Valley, Virginia
    Image Owner: Callan Bentley



    Description:

    Quite distinct from the more rounded population of clasts in this sample.



  37. Mahantango
  38. Bloomsburg Formation

    Snapshot Title: Bloomsburg Formation
    Taken by: Callan Bentley

    Image: Sediment from Passage Creek, Fort Valley, Virginia
    Image Owner: Callan Bentley



    Description:

    Outcrop:
    gigapan.com/gigapans/168012Hand sample:
    www.gigapan.com/gigapans/163085



  39. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Sediment from Passage Creek, Fort Valley, Virginia
    Image Owner: Callan Bentley



    Description:

    Petri dish is 9 cm in diameter



  40. Mini bomb?

    Snapshot Title: Mini bomb?
    Taken by: Callan Bentley

    Image: Kilauea surface crevice debris
    Image Owner: Callan Bentley



    Description:

    or a seed?



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