E Prime Layer

E Prime Layer mind map
  Context
    Study by international team
    Researchers included
      Arizona State University
    Source
      Astrobiology
  E-Prime Layer
    Distinct layer
      Outermost part of Earth's core
    Formation
      Surface water penetration
      Over billions of years
    Characteristics
      Hydrogen-rich
      Silicon-depleted
      Reaction with core's silicon
        Core-mantle boundary
  Previous belief
    Minimal material exchange
      Core and mantle
  New findings
    Tectonic plates transport
      Surface water
      To core-mantle boundary
      Depth of around 1,800 miles
    Chemical reaction
      Forms silica
      Creates E-Prime Layer
  Significance
    Understanding of
      Earth's processes
      Magnetic field
      Heat generation
      Plate tectonics
  Earth's layers & Discontinuties
    Crust
      Mohorovičić Discontinuity (Moho)
    Mantle
      Upper
        Repetti Discontinuity
      Transition
        Lehmann Discontinuity
      Lower
        Gutenberg Discontinuity
    Outer Core
      Lehmann Discontinuity
        Core-mantle boundary
    Inner Core
      Bullen Discontinuity
        Inner core boundary

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