Mid-Atlantic Ridge pillow basalt

  • Exhibition Text

    • This sample illustrates how pillow basalts grow. First, a pillow structure forms, then increasing magmatic pressure fractures part of the surface. Lava is squeezed through the jagged fracture like toothpaste, forming a striated pillow tube.


      Provided by Prof. Charles Langmuir, Lamont-Doherty Earth Observatory, Columbia University, New York, New York

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  • For Educators

    • Topic: Earth Science

      Subtopic: Volcanoes

      Keywords: Ocean bottom, Volcanoes, Basalt, Magmas, Mid-ocean ridges, Lava

      Audience: General