1. Skip to navigation
  2. Skip to content
  3. Skip to sidebar


Snapshots

  1. Close-up

    Snapshot Title: Close-up
    Taken by: Robin Rohrback-Schiavone

    Image: Sand from Kirby Cove, Marin County, CA
    Image Owner: Robin Rohrback-Schiavone



    Description:

    Coarse, immature, poorly sorted grains.



  2. Obsidian?

    Snapshot Title: Obsidian?
    Taken by: Robin Rohrback-Schiavone

    Image: Sand from Kirby Cove, Marin County, CA
    Image Owner: Robin Rohrback-Schiavone



    Description:

    That sure looks like conchoidal fracture to me.



  3. Pillow Basalts

    Snapshot Title: Pillow Basalts
    Taken by: Robin Rohrback-Schiavone

    Image: Sand from Kirby Cove, Marin County, CA
    Image Owner: Robin Rohrback-Schiavone



    Description:

    To explore some of the pillow basalts exposed at Kirby Cove, click here:

    gigapan.com/gigapans/125480



  4. Scale

    Snapshot Title: Scale
    Taken by: Robin Rohrback-Schiavone

    Image: Sand from Kirby Cove, Marin County, CA
    Image Owner: Robin Rohrback-Schiavone



    Description:

    The petri dish is 9 cm in diameter.