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Callan Bentley's Snapshots

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  1. 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.



  2. Baked!

    Snapshot Title: Baked!
    Taken by: Callan Bentley

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



    Description:

    Contact metamorphism from the ash-flow.



  3. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

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



    Description:

    10 centimeters on the meter stick.



  4. 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.



  5. 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.



  6. 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.



  7. 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.



  8. 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.



  9. 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.



  10. 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.



  11. 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.



  12. Fold

    Snapshot Title: Fold
    Taken by: Callan Bentley

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



    Description:

    Asymmetric / overturned



  13. 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.



  14. 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.



  15. 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



  16. 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



  17. 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.



  18. 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.



  19. 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.



  20. 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.



  21. 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.



  22. Coral fossil

    Snapshot Title: Coral fossil
    Taken by: Callan Bentley

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



    Description:

    Radiating septa.



  23. 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 fossils in a variety of orientations, accompanied by thick gray oyster shells.



  24. 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 (gastropod) fossils, cross-sectioned in a variety of orientations.



  25. Synform

    Snapshot Title: Synform
    Taken by: Callan Bentley

    Image: Cristo Rey: Buda Formation - overturned syncline
    Image Owner: Callan Bentley



    Description:

    Overturned? Sheared?



  26. Slope of Cristo Rey

    Snapshot Title: Slope of Cristo Rey
    Taken by: Callan Bentley

    Image: Cristo Rey: Mesilla Valley Formation - folds
    Image Owner: Callan Bentley



    Description:

    If you keep walking uphill (to the right), you can summit Cristo Rey, a laccolith topped by a cross (a popular pilgrimage site).



  27. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

    Image: Cristo Rey: Mesilla Valley Formation - folds
    Image Owner: Callan Bentley



    Description:

    This black bar is 1 centimeter in length.



  28. Smokestack

    Snapshot Title: Smokestack
    Taken by: Callan Bentley

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



    Description:

    These rocks are quarried for cement production.



  29. Cristo Rey

    Snapshot Title: Cristo Rey
    Taken by: Callan Bentley

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



    Description:

    This is the large statue of the cross that adorns the summit of the Cristo Rey laccolith. The morning we were there, 3 people were robbed at gunpoint by the shrine.



  30. Scale

    Snapshot Title: Scale
    Taken by: Callan Bentley

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



    Description:

    This Coke bottle (apparently full of urine???) gives a sense of scale tot he GigaPan.



  31. Pyroclastic surge deposits

    Snapshot Title: Pyroclastic surge deposits
    Taken by: Callan Bentley

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



    Description:

    Big, powerful eruption.



  32. Contact metamorphism

    Snapshot Title: Contact metamorphism
    Taken by: Callan Bentley

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



    Description:

    Baked soils



  33. Basalt

    Snapshot Title: Basalt
    Taken by: Callan Bentley

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



    Description:

    The Afton flow, 70-80 ka.



  34. Field vehicle

    Snapshot Title: Field vehicle
    Taken by: Callan Bentley

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



    Description:

    This is what happened to the last geologists to visit this site.



  35. Zoom in

    Snapshot Title: Zoom in
    Taken by: Callan Bentley

    Image: Confusion Hill overview GigaPan #1
    Image Owner: Callan Bentley



    Description:

    Around the corner, the road cut continues. Examine it in closer detail with this GigaPan:
    gigapan.com/gigapans/129411



  36. Detail

    Snapshot Title: Detail
    Taken by: Callan Bentley

    Image: Confusion Hill overview GigaPan #1
    Image Owner: Callan Bentley



    Description:

    More detail of this part of the outcrop can be seen at this close-range GigaPan: gigapan.com/gigapans/129404



  37. Detail

    Snapshot Title: Detail
    Taken by: Callan Bentley

    Image: Confusion Hill overview GigaPan #1
    Image Owner: Callan Bentley



    Description:

    More detail of this part of the outcrop can be seen at this close-range GigaPan: gigapan.com/gigapans/129361



  38. Detail

    Snapshot Title: Detail
    Taken by: Callan Bentley

    Image: Confusion Hill overview GigaPan #1
    Image Owner: Callan Bentley



    Description:

    More detail of this part of the outcrop can be seen at this close-range GigaPan: gigapan.com/gigapans/129325



  39. Detail

    Snapshot Title: Detail
    Taken by: Callan Bentley

    Image: Confusion Hill overview GigaPan #1
    Image Owner: Callan Bentley



    Description:

    More detail of this part of the outcrop can be seen at this close-range GigaPan:
    gigapan.com/gigapans/129324



  40. Zoom in

    Snapshot Title: Zoom in
    Taken by: Callan Bentley

    Image: Confusion Hill overview GigaPan #1
    Image Owner: Callan Bentley



    Description:

    For a closer look at this portion of the outcrop, please visit this GigaPan: gigapan.com/gigapans/129332



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