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Snapshots

  1. Reactivation surface

    Snapshot Title: Reactivation surface
    Taken by: Peter Lea

    Image: Weathered Sedimentary Rocks near Ticonderoga, NY
    Image Owner: Ron Schott



    Description:

    This one's lovely, if subtle. The dark inclined layers on the right terminate downward against an erosional surface (thin line ca. half-way up) that interrupted migration of a former underwater dune. ...



  2. Bioturbation

    Snapshot Title: Bioturbation
    Taken by: Peter Lea

    Image: Weathered Sedimentary Rocks near Ticonderoga, NY
    Image Owner: Ron Schott



    Description:

    Notice how the sharply defined laminae at the level of the quarter get blurred and eliminated upward. During a pause in deposition, worms and other critters were having their way with the sand near th...



  3. Crossbedding

    Snapshot Title: Crossbedding
    Taken by: Ron Schott

    Image: Weathered Sedimentary Rocks near Ticonderoga, NY
    Image Owner: Ron Schott



    Description:

    ... has never looked so good!