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Snapshots

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  1. Mudstone

    Snapshot Title: Mudstone
    Taken by: Collin Burke

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    This image shows that the outcrop is predominantly mudstone. This suggests that deposition occurred primarily at a distal overbank.



  2. Leeching

    Snapshot Title: Leeching
    Taken by: Collin Burke

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    This image shows how the red mud has leeched over time, contaminating the white sandstone.



  3. Red to white

    Snapshot Title: Red to white
    Taken by: Collin Burke

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    This feature shows the alternating layers of white sandstone and red mudstone. This suggests a lateral migration of the channel.



  4. z19

    Snapshot Title: z19
    Taken by: Andrew Murguia

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Evidence for soil formation - distal overbank



  5. Soil

    Snapshot Title: Soil
    Taken by: Stephanie Lynn

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Red color suggests paleosol.



  6. Tabular layer

    Snapshot Title: Tabular layer
    Taken by: Madison Smith

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Tabular proximal overbank deposit



  7. Tabular Sand Bed

    Snapshot Title: Tabular Sand Bed
    Taken by: Stephanie Lynn

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Proximal overbank deposit.



  8. z18

    Snapshot Title: z18
    Taken by: Andrew Murguia

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Alternating mud and sand layers - predominantly mud layers, suggesting alternating proximal and distal overbank deposits

    Thick, resistant light colored layer = ?
    Apparently consists of mostly mud, w...



  9. Sand

    Snapshot Title: Sand
    Taken by: Stephanie Lynn

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Mud with resistant sand layers of uncertain origin.



  10. Thin overbank deposits

    Snapshot Title: Thin overbank deposits
    Taken by: Madison Smith

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Thin layering between sand and mud indicating overbank altering between proximal and distal



  11. Alternating layers of sand and mud

    Snapshot Title: Alternating layers of sand and mud
    Taken by: Stephanie Lynn

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    I interpret the light colored material to be sand and the red material to be bud. This suggests alternating layers of sediment.



  12. Alternating proximal distal overbank

    Snapshot Title: Alternating proximal distal overbank
    Taken by: Madison Smith

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Red-brown indicates mud, so distal overbank deposits, and grey indicates sand, so proximal overbank deposits.



  13. Alternating Layers of Mud and Sand

    Snapshot Title: Alternating Layers of Mud and Sand
    Taken by: Rachel Barnes

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    continuous flood events: proximal and distal overbank deposits



  14. HCS

    Snapshot Title: HCS
    Taken by: Rachel Barnes

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    ?



  15. River Migration

    Snapshot Title: River Migration
    Taken by: Rachel Barnes

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    The dark mud at the bottom of the photo suggests distal overbank deposits. As the photo transitions up to sand (proximal overbank) and gravel, the channel migrates closer - to the point where the riv...



  16. Shifting Channel Bed

    Snapshot Title: Shifting Channel Bed
    Taken by: Kevin McDonough

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Channel bed shift marked by thick layer of sand deposited by river then mud showing bank to overbank environment.



  17. Proximal Overbank Deposits

    Snapshot Title: Proximal Overbank Deposits
    Taken by: Kevin McDonough

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Thin layers of sand overlying red-brown mud layers. Because of the thickness of the sand layers, it is safe to assume they are related to pulsing flood events that overly the thick mud deposits.



  18. layered transitions

    Snapshot Title: layered transitions
    Taken by: Sian Riebe

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Transitions from sandstone to mudstone
    - gravelly deposit associated (channel bed)
    - transition from proximal overbank deposit to channel deposits?



  19. Reduced

    Snapshot Title: Reduced
    Taken by: Sian Riebe

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Transitions between mudstone and reduced mudstone
    - Mudstone layer appears less stable than reduced, as more eroded
    - Reduced layers suggests a more distill overbank deposit with oxygen



  20. Reduced layers

    Snapshot Title: Reduced layers
    Taken by: Sian Riebe

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Transition zones from red bed banding to reduced greenish gray, to muddy-sandstone.
    - Evidence of coarse grain material deposited above reduced layer on right.

    - Possible soil formation accordin...



  21. z16

    Snapshot Title: z16
    Taken by: Andrew Murguia

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Sandstone and shale layers

    The two thick, blocky layers are sandstones - indicative of proximal overbank/channel deposits

    The more slopping (less cliff-forming) layers that appear more weathered...



  22. z15

    Snapshot Title: z15
    Taken by: Andrew Murguia

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Overall pattern suggests that layers are predominantly muddy in nature, though some sand is present (a few thin sand layers can be seen).

    This suggests that this area was mostly further from the ri...



  23. z14

    Snapshot Title: z14
    Taken by: Andrew Murguia

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Detail of mudrock

    Note the evidence of chemical weathering (whitish color)



  24. bigdogg

    Snapshot Title: bigdogg
    Taken by: Joe Russo

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    KM



  25. Channel Deposit?

    Snapshot Title: Channel Deposit?
    Taken by: Conor O'Toole

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Possible river bed/ channel deposit. Seems like a big difference on the sides, since it goes from massive red beds, to whitish mixed up sandy layer



  26. Red beds bounded by sandy layers

    Snapshot Title: Red beds bounded by sandy layers
    Taken by: Conor O'Toole

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Sandy overbank deposits bound the red bed muddy layers; mudstone erodes very easily, since it is not very strong



  27. Laminated red beds with overlying sand

    Snapshot Title: Laminated red beds with overlying sand
    Taken by: Conor O'Toole

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Red beds on bottom with decreasing intensity of red beds as go up in formation, until the formation becomes sand deposits



  28. lateral migration?

    Snapshot Title: lateral migration?
    Taken by: Delger Erdenesanaa

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    are these sections of channel?



  29. Picture 4

    Snapshot Title: Picture 4
    Taken by: Anna Westervelt

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    mud/Clay, weird geochemical reactions, and sand layers on top. water leaching through porous sandy layer and hitting mud layer and changing the color to brown!



  30. thin sandstone layers

    Snapshot Title: thin sandstone layers
    Taken by: Delger Erdenesanaa

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    - evidence of former crevasse splays
    - proximal overbank



  31. Mud-->Sand

    Snapshot Title: Mud-->Sand
    Taken by: Graham Edwards

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Mud with paleosol regions on bottom. Sandstone on top.



  32. jmaine5

    Snapshot Title: jmaine5
    Taken by: Julia Maine

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    snapshot5



  33. channel sandstone

    Snapshot Title: channel sandstone
    Taken by: Delger Erdenesanaa

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    2 separated layers



  34. organic C

    Snapshot Title: organic C
    Taken by: Delger Erdenesanaa

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    dark grey stuff



  35. jmaine4

    Snapshot Title: jmaine4
    Taken by: Julia Maine

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    snapshot4



  36. Vertical succession

    Snapshot Title: Vertical succession
    Taken by: Ryan Peabody

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Layers of sandstone extend laterally, suggesting a migrating channel



  37. Sheet sandstone

    Snapshot Title: Sheet sandstone
    Taken by: Graham Edwards

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:

    Sheet sandstone overlain by dipping beds...curious...



  38. JF 3a

    Snapshot Title: JF 3a
    Taken by: jmfriedman

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:



  39. JF 2a

    Snapshot Title: JF 2a
    Taken by: jmfriedman

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:



  40. JF 1a

    Snapshot Title: JF 1a
    Taken by: jmfriedman

    Image: Morrison Formation near Hanksville, Utah
    Image Owner: Peter Lea



    Description:



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