NFR Geologically, what's going on here

Discussion in 'Saltwater' started by wadin' boot, Nov 18, 2013.

  1. Jack Devlin

    Jack Devlin Active Member

    Joined:
    Oct 16, 2011
    Messages:
    1,459
    Likes Received:
    1,385
    Location:
    Western Washington, Puget Sound area
    I haven't been there in many years, but isn't there a runoff? outfall right there at the top of the "lagoon"???
    Jack
     
  2. Robbi K

    Robbi K New Member

    Joined:
    Jun 23, 2006
    Messages:
    20
    Likes Received:
    8
    Location:
    University Place
    image.jpg

    It would be interesting to hear from a diver who has seen the underwater structure here. My guess is that this is an unusual result of deep tidal current erosion in very complex glacial deposits and bedrock. Also, there is a fault line that runs NW/SE very near this structure that may have some connection. Cool spot.
     
    wadin' boot likes this.
  3. Mark Walker

    Mark Walker Active Member

    Joined:
    Apr 27, 2008
    Messages:
    2,875
    Likes Received:
    341
    Location:
    So. Cal.
    Izzat Mingo?
    ;)
     
  4. Alex MacDonald

    Alex MacDonald Dr. of Doomology

    Joined:
    Sep 23, 2008
    Messages:
    4,100
    Likes Received:
    1,543
    Location:
    Haus Alpenrosa, Lederhosenland
    My minor was paleoanthropology, which contains a ton of geology. I'd need to see a larger picture, but it doesn't look like a plunge pool or outflow of any kind to me. Probably a function of littoral deposition reacting to a submerged structure or some weird currents in the area.
     
  5. DimeBrite

    DimeBrite MA-9 Beach Stalker

    Joined:
    May 7, 2007
    Messages:
    1,246
    Likes Received:
    922
    Location:
    Marine Area 9
    It also could be the melt location of a big chunk of underground ice from the last period of glaciation. As the beach eroded this depression merged with the shoreline. There are plenty of pothole depression ponds in the Puget Sound area away from the shoreline.

     
  6. [WR]

    [WR] Member

    Joined:
    Feb 13, 2011
    Messages:
    95
    Likes Received:
    0
    Location:
    Federal Way, WA
    Are you guys forgetting ancient Rainier lahar flow and quake activity?