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Callan Bentley's Snapshots

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  1. Lapilli

    Snapshot Title: Lapilli
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail E
    Image Owner: Callan Bentley



    Description:

    Coarser grained layer, with many concentrically-layered "accretionary" lapilli.



  2. Vesicular

    Snapshot Title: Vesicular
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail E
    Image Owner: Callan Bentley



    Description:

    Was this the top of the flow that the block was derived from?



  3. Blotchy

    Snapshot Title: Blotchy
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail E
    Image Owner: Callan Bentley



    Description:

    Little clusters of plagioclase?



  4. High & dry

    Snapshot Title: High & dry
    Taken by: Callan Bentley

    Image: Passage Creek in flood
    Image Owner: Callan Bentley



    Description:

    The horses are on the next terrace up from the floodplain, and they're happy to be there.



  5. No go

    Snapshot Title: No go
    Taken by: Callan Bentley

    Image: Passage Creek in flood
    Image Owner: Callan Bentley



    Description:

    This is where the road dips under water level.



  6. European Starling

    Snapshot Title: European Starling
    Taken by: Callan Bentley

    Image: Passage Creek in flood
    Image Owner: Callan Bentley



    Description:

    Sturnus vulgaris



  7. Natural levee

    Snapshot Title: Natural levee
    Taken by: Callan Bentley

    Image: Passage Creek in flood
    Image Owner: Callan Bentley



    Description:

    Slightly above water level as the flood begins to ebb



  8. 1 cm

    Snapshot Title: 1 cm
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail E
    Image Owner: Callan Bentley



    Description:

    Another sense of scale.



  9. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail E
    Image Owner: Callan Bentley



    Description:

    This is 1 centimeter.
    Scale card courtesy of the Virginia Department of Geology and Mineral Resources.



  10. Split

    Snapshot Title: Split
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail B
    Image Owner: Callan Bentley



    Description:

    I swear, I told them not to move!



  11. H2O bottle

    Snapshot Title: H2O bottle
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail B
    Image Owner: Callan Bentley



    Description:

    But it looks empty.



  12. Shotgun shells

    Snapshot Title: Shotgun shells
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail B
    Image Owner: Callan Bentley



    Description:

    People shoot guns here.



  13. Climbing ripples

    Snapshot Title: Climbing ripples
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail B
    Image Owner: Callan Bentley



    Description:

    in pyroclastic surge deposits



  14. Marc

    Snapshot Title: Marc
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail B
    Image Owner: Callan Bentley



    Description:

    EPCC / UTEP student who's really into geophysics.



  15. Jenni

    Snapshot Title: Jenni
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail B
    Image Owner: Callan Bentley



    Description:

    UTEP / EPCC student working on GigaPans with Joshua Villalobos.



  16. Debbie Caskey #2

    Snapshot Title: Debbie Caskey #2
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail B
    Image Owner: Callan Bentley



    Description:

    She moved!



  17. Joshua Villalobos

    Snapshot Title: Joshua Villalobos
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail B
    Image Owner: Callan Bentley



    Description:

    Geology professor at El Paso Community College.



  18. Debbie Caskey #1

    Snapshot Title: Debbie Caskey #1
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail B
    Image Owner: Callan Bentley



    Description:

    Geology professor at El Paso Community College.



  19. Joe

    Snapshot Title: Joe
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail B
    Image Owner: Callan Bentley



    Description:

    A tough hiker and a great guy.



  20. Basalt

    Snapshot Title: Basalt
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail B
    Image Owner: Callan Bentley



    Description:

    The Afton flow, 70 to 80 ka in age.



  21. Baked!

    Snapshot Title: Baked!
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail B
    Image Owner: Callan Bentley



    Description:

    Contact metamorphism from the ash-flow.



  22. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail B
    Image Owner: Callan Bentley



    Description:

    10 centimeters on the meter stick.



  23. Missing bomb/block

    Snapshot Title: Missing bomb/block
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail C
    Image Owner: Callan Bentley



    Description:

    A hole, with sedimentary laminations wrapping around it.



  24. Lapilli layer

    Snapshot Title: Lapilli layer
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail C
    Image Owner: Callan Bentley



    Description:

    Some of these lapilli have concentric zonation, indicating their accretionary nature.



  25. Cross-bedding

    Snapshot Title: Cross-bedding
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail C
    Image Owner: Callan Bentley



    Description:

    in surge (ash-flow) deposits.



  26. Vesicles

    Snapshot Title: Vesicles
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail C
    Image Owner: Callan Bentley



    Description:

    Some volcano was pretty gassy when it popped off this eruption.



  27. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail C
    Image Owner: Callan Bentley



    Description:

    10 centimeters on a 1-meter stick.



  28. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Kilbourne Hole, detail D
    Image Owner: Callan Bentley



    Description:

    pencil with 1-cm black bars along the side.



  29. Contact

    Snapshot Title: Contact
    Taken by: Callan Bentley

    Image: Cristo Rey: Mesilla Valley Formation - contact with Campus Andesite
    Image Owner: Callan Bentley



    Description:

    Mesilla Valley Formation (sedimentary rocks: sandstone and shale layers) on the left; Campus Andesite (igneous rocks of the Cristo Rey laccolith) on the right.



  30. Cleavage fan

    Snapshot Title: Cleavage fan
    Taken by: Callan Bentley

    Image: Cristo Rey: Buda Formation - folds and faults
    Image Owner: Callan Bentley



    Description:

    "spraying out" from the fold hinge region.



  31. Fold

    Snapshot Title: Fold
    Taken by: Callan Bentley

    Image: Cristo Rey: Buda Formation - folds and faults
    Image Owner: Callan Bentley



    Description:

    Asymmetric / overturned



  32. Scale pencil

    Snapshot Title: Scale pencil
    Taken by: Callan Bentley

    Image: Cristo Rey: Buda Formation - folds and faults
    Image Owner: Callan Bentley



    Description:

    With black bars on the side each 1 cm in length.



  33. Scale card

    Snapshot Title: Scale card
    Taken by: Callan Bentley

    Image: Cristo Rey: Buda Formation - folds and faults
    Image Owner: Callan Bentley



    Description:

    Inches on the top; centimeters on the bottom.



  34. Oyster

    Snapshot Title: Oyster
    Taken by: Callan Bentley

    Image: Cristo Rey: Buda Formation - Fossils in the quarry
    Image Owner: Callan Bentley



    Description:

    Oyster fossils - thick, gray shells



  35. Turitella

    Snapshot Title: Turitella
    Taken by: Callan Bentley

    Image: Cristo Rey: Buda Formation - Fossils in the quarry
    Image Owner: Callan Bentley



    Description:

    High-spiraled snail fossil



  36. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Cristo Rey: Buda Formation - Fossils in the quarry
    Image Owner: Callan Bentley



    Description:

    This black bar is 1 centimeter tall.



  37. 1 cm

    Snapshot Title: 1 cm
    Taken by: Callan Bentley

    Image: Cristo Rey: Buda Formation - Fossils in the quarry
    Image Owner: Callan Bentley



    Description:

    This black bar is one centimeter in length.



  38. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Cristo Rey: Buda Formation - Fossils in the quarry
    Image Owner: Callan Bentley



    Description:

    This black bar on the side of this throroughly-dismembered pencil is 1 centimeter in length.



  39. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Cristo Rey: Buda Formation - Fossils in the quarry
    Image Owner: Callan Bentley



    Description:

    1 inch, on the DGMR scale card.



  40. Turitella

    Snapshot Title: Turitella
    Taken by: Callan Bentley

    Image: Cristo Rey: Buda Formation - Fossils in the quarry
    Image Owner: Callan Bentley



    Description:

    A nice long section.



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