Inner shelf

Depth of water

Fair-weather wave base - Storm wave base (20 - 80 m)

Circumstances

The deepest ocean floor subjected to the erosional influences of waves. Silt deposits with a lot of biogenic activities without any influence of waves under fair weather. Sands deposit supplied from longshore bars as they are broken by waves under storm weather. Hummocky cross-stratifications are formed by waves of storm weather. The ratio of sands in the deposits increases toward the land.

Sedimentary facies (Sediments)

Interbedded silt and sand. Silt beds are subjected to the strong bioturbation.

Sedimentary facies (Structures)

Hummocky cross-stratificaiton and wave-formed ripples.