TrekGEO > Geology of Japan > Sedimentary facies > Organic reef

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Organic reef

Shallow marine


A sedimentary system composed of a series of sedimentary facies in organic reefs such as coral reefs. Lagoon is formed by the biological activity of reef-forming corals.

Organic reef

Schematic diagram of organic reefs.

Sedimentary facies

  • Salt marsh
  • Back-reef lagoon (Inner)
  • Back-reef lagoon (Outer)
  • Reef core
  • Forereef slope
  • Off-reef open shelf

Other sedimentary systems

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