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Callan Bentley's Snapshots

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  1. Sacagawea Peak

    Snapshot Title: Sacagawea Peak
    Taken by: Callan Bentley

    Image: Sacagawea Peak from bioherms near the Thunderer, Bridger Range, Montana
    Image Owner: Callan Bentley



    Description:

    Two climbers on the summit of the highest peak in the Bridger Range.



  2. Bozeman / Gallatin Field Airport

    Snapshot Title: Bozeman / Gallatin Field Airport
    Taken by: Callan Bentley

    Image: Sacagawea Peak from bioherms near the Thunderer, Bridger Range, Montana
    Image Owner: Callan Bentley



    Description:

    The spankin' new terminal.



  3. Gallatin Gateway

    Snapshot Title: Gallatin Gateway
    Taken by: Callan Bentley

    Image: Sacagawea Peak from bioherms near the Thunderer, Bridger Range, Montana
    Image Owner: Callan Bentley



    Description:

    Here's where the Gallatin River emerges (flowing north) from the Gallatin / Madison Range block. Gallatin Mountains on the left; Madison Range on the right.



  4. Brick Breeden Fieldhouse

    Snapshot Title: Brick Breeden Fieldhouse
    Taken by: Callan Bentley

    Image: Sacagawea Peak from bioherms near the Thunderer, Bridger Range, Montana
    Image Owner: Callan Bentley



    Description:

    on the campus of Montana State University.



  5. Ant

    Snapshot Title: Ant
    Taken by: Callan Bentley

    Image: Sandstone blocks near Seneca Quarry, MD
    Image Owner: sladler



    Description:

    on patrol.



  6. Dead centipede

    Snapshot Title: Dead centipede
    Taken by: Callan Bentley

    Image: Sandstone blocks near Seneca Quarry, MD
    Image Owner: sladler



    Description:

    Poor fellow!



  7. Joint set

    Snapshot Title: Joint set
    Taken by: Callan Bentley

    Image: Lamprophyre Dikes at Mather Gorge (Great Falls, MD)
    Image Owner: sladler



    Description:

    Parallel to the dikes - so the joints likely preceded the intrusion of the lamprophyre. Which means the crust here had cooled to brittle conditions by before the intrusion of the dikes (~360 Ma), and ...



  8. "Where are those lamprophyre dikes?"

    Snapshot Title: "Where are those lamprophyre dikes?"
    Taken by: Callan Bentley

    Image: Lamprophyre Dikes at Mather Gorge (Great Falls, MD)
    Image Owner: sladler



    Description:

    "I don't know; I thought they were around here somewhere..."



  9. Contrast

    Snapshot Title: Contrast
    Taken by: Callan Bentley

    Image: Lamprophyre Dikes at Mather Gorge (Great Falls, MD)
    Image Owner: sladler



    Description:

    A clear color and texture contrast can be observed here between the dikes and the host rock.



  10. Paul

    Snapshot Title: Paul
    Taken by: Callan Bentley

    Image: Passage Creek NOT in flood
    Image Owner: Callan Bentley



    Description:

    the runner!



  11. Starling

    Snapshot Title: Starling
    Taken by: Callan Bentley

    Image: Passage Creek NOT in flood
    Image Owner: Callan Bentley



    Description:

    Sturnus vulgaris.



  12. Cristo Rey

    Snapshot Title: Cristo Rey
    Taken by: Callan Bentley

    Image: Angular Unconformity, west of El Paso, Texas
    Image Owner: Callan Bentley



    Description:

    Summit, with arrow.



  13. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

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



    Description:

    10 centimeters on the meter stick



  14. Debris piled up

    Snapshot Title: Debris piled up
    Taken by: Callan Bentley

    Image: Passage Creek in flood
    Image Owner: Callan Bentley



    Description:

    on the upstream side of the fence.



  15. Cant get across

    Snapshot Title: Cant get across
    Taken by: Callan Bentley

    Image: Passage Creek in flood
    Image Owner: Callan Bentley



    Description:

    Oh well...



  16. Starlings

    Snapshot Title: Starlings
    Taken by: Callan Bentley

    Image: Passage Creek in flood
    Image Owner: Callan Bentley



    Description:

    Two European starlings, Sturnus vulgaris



  17. Alteration

    Snapshot Title: Alteration
    Taken by: Callan Bentley

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



    Description:

    Hydrothermal (?) alteration (staining of black shale to white) along a fracture system oriented orthogonally to bedding within the Mesilla Valley Formation.



  18. Critter hole

    Snapshot Title: Critter hole
    Taken by: Callan Bentley

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



    Description:

    Wasp? Beetle?



  19. Ashy layers

    Snapshot Title: Ashy layers
    Taken by: Callan Bentley

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



    Description:

    Lots of fine-bedded ash layers from the pyroclastic surge (ash-flow).



  20. 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.



  21. 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?



  22. Blotchy

    Snapshot Title: Blotchy
    Taken by: Callan Bentley

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



    Description:

    Little clusters of plagioclase?



  23. 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.



  24. 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.



  25. European Starling

    Snapshot Title: European Starling
    Taken by: Callan Bentley

    Image: Passage Creek in flood
    Image Owner: Callan Bentley



    Description:

    Sturnus vulgaris



  26. 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



  27. 1 cm

    Snapshot Title: 1 cm
    Taken by: Callan Bentley

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



    Description:

    Another sense of scale.



  28. 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.



  29. 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!



  30. H2O bottle

    Snapshot Title: H2O bottle
    Taken by: Callan Bentley

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



    Description:

    But it looks empty.



  31. Shotgun shells

    Snapshot Title: Shotgun shells
    Taken by: Callan Bentley

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



    Description:

    People shoot guns here.



  32. Climbing ripples

    Snapshot Title: Climbing ripples
    Taken by: Callan Bentley

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



    Description:

    in pyroclastic surge deposits



  33. 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.



  34. 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.



  35. Debbie Caskey #2

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

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



    Description:

    She moved!



  36. 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.



  37. 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.



  38. 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.



  39. 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.



  40. Baked!

    Snapshot Title: Baked!
    Taken by: Callan Bentley

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



    Description:

    Contact metamorphism from the ash-flow.



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