MSGID: 1:317/3 62d6f181   
   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
    EPOD - a service of USRA   
      
   The Earth Science Picture of the Day (EPOD) highlights the diverse processes   
   and phenomena which shape our planet and our lives. EPOD will collect and   
   archive photos, imagery, graphics, and artwork with short explanatory   
   captions and links exemplifying features within the Earth system. The   
   community is invited to contribute digital imagery, short captions and   
   relevant links.   
      
      
    New Eddystone Rock   
      
      July 19, 2022   
      
       DSC01114r(1)   
      
      Photographer:  John and Ruth Mauel   
      
      Summary Author:  John and Ruth Mauel   
      
      There are many volcanic plugs in the world, of which some are quite   
       spectacular, and many of them in  clusters or fields. Shown   
      above is  New Eddystone rock located in the Behm Channel, east of   
      Ketchikan, Alaska. This eye-catching landform within the  Misty   
      Fjords National Monument is geologically and historically unusual.   
      
      Named by Captain George Vancouver in 1793 after a  lighthouse near   
      Plymouth, England, 'New' Eddystone rock is the neck of a volcano that   
      erupted approximately 15,000 years ago. Energy from the eruption passed   
      through the ice that carved the steep-sided fjords of the area. The   
      magma erupted near a seam between the granites and gneisses of the   
      Coastal Range Batholith and the Taku terranes. Surrounding rocks were   
      weakened by the  isostatic rebound caused by the receding of the ice   
      sheet. Several  similar plugs that erupted around the same time,   
      have been eroded and remain below sea level. This difference in form   
      could suggest they were scraped flat by the glaciers.   Studies have   
      also shown these structures are strongly associated with numerous   
      smaller flows and volcanic activity as far east as Mount Edziza in   
      British Columbia.   
        * Behm Channel, Alaska Coordinates: 55.503611, -130.935833   
      
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       Culburra Beach Sand Layers Following Wildfires  Timpa Nature   
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       More...   
      
   Geology Links   
      
        *  Earthquakes   
        *  Geologic Time   
        *  Geomagnetism   
        *  General Dictionary of Geology   
        *  Mineral and Locality Database   
        *  Mohs Scale of Mineral Hardness   
        *  This Dynamic Earth   
        *  USGS   
        *  MyShake - University of California, Berkeley   
        *  USGS Ask a Geologist   
        *  USGS/NPS Geologic Glossary   
        *  USGS Volcano Hazards Program   
      
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      Space Research Association.   
      
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