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Ronald Bruhn's Snapshots

  1. folded lamination

    Snapshot Title: folded lamination
    Taken by: Ronald Bruhn

    Image: Navajo Sandstone Cliff
    Image Owner: Ronald Bruhn



    Description:

    Ripple lamination folded in lower part of photo causes
    broad upwarp of overlying white sandstone bed.



  2. Deformed lamintations

    Snapshot Title: Deformed lamintations
    Taken by: Ronald Bruhn

    Image: Navajo Sandstone Outcrop
    Image Owner: Ronald Bruhn



    Description:

    Ripple laminations are turned to vertical within
    apparent apparent breccia or dismembered block layer



  3. A ancient mariner stranded on a fossil lake?

    Snapshot Title: A ancient mariner stranded on a fossil lake?
    Taken by: Ronald Bruhn

    Image: Galana Boi lake beds, Lake Turkana, Kenya
    Image Owner: Ronald Bruhn



    Description:

    Prof. Frank Brown from the University of Utah provides a handy scale for evaluating the sediment thickness and depth of gullies eroded into the Galana Boil deposits.



  4. Someone is home!

    Snapshot Title: Someone is home!
    Taken by: Ronald Bruhn

    Image: Lake Turkana in the African Rift System, Kenya
    Image Owner: Ronald Bruhn



    Description:

    Although desolate the lake supports a number of African tribes who live along the shore. Fishing is especially important. Lake Turkana is home ot Nile Perch, and of course, large crocodiles.



  5. Be Careful!

    Snapshot Title: Be Careful!
    Taken by: Ronald Bruhn

    Image: Lake Bogoria Geysers - East African Rift Valley, Kenya
    Image Owner: Ronald Bruhn



    Description:

    Thermal springs are dangerous - here you can read the warning both in English and Swahili.



  6. Geyser - Lake Bogoria

    Snapshot Title: Geyser - Lake Bogoria
    Taken by: Ronald Bruhn

    Image: Lake Bogoria Geysers - East African Rift Valley, Kenya
    Image Owner: Ronald Bruhn



    Description:

    This is one of several geysers formed by eruption of boiling water at Lake Bogoria.



  7. Deformed Cross Bedding

    Snapshot Title: Deformed Cross Bedding
    Taken by: Ronald Bruhn

    Image: Navajo Sandstone Outcrop
    Image Owner: Ronald Bruhn



    Description:

    Crystal Hammers thesis project at the University of Utah is focusing on determining the origin of deformation within the Navajo Sandstone. This snapshot shows one example of deformed cross beds. Cross...



  8. Geologist at Work

    Snapshot Title: Geologist at Work
    Taken by: Ronald Bruhn

    Image: Navajo Sandstone Cliff
    Image Owner: Ronald Bruhn



    Description:

    Sometimes it hot - somtimes it cold!



  9. Ancient Foresets

    Snapshot Title: Ancient Foresets
    Taken by: Ronald Bruhn

    Image: Navajo Sandstone - Ancient Sand Dunes
    Image Owner: Ronald Bruhn



    Description:

    The Navajo Sandstone of the western U.S. is famous for its spectacular landforms, color and sedimentary structures. This snapshot shows dune structures formed by motion of sand in the wind.



  10. Faulted River Channel

    Snapshot Title: Faulted River Channel
    Taken by: Ronald Bruhn

    Image: Indian Canyon, Utah
    Image Owner: Ronald Bruhn



    Description:

    This is one of two large river channel deposits in the image that are encased within the horizontally layered beds of an ancient lake that existed here around 50 million years ago. This river channel ...