Oolitic Sands

Joulters Cay, Andros Island, Bahamas

   Oolites are tiny concentrically laminated spheres or rods. In waters super-saturated with calcium carbonate, the grains accrete or grow around a nucleus, a bit of shrimp feces or a tiny shell or rock fragment.
   Oolites accrete or grow larger as they are agitated by the waves, tides or currents. They form on the warm Bahamas Platform, in Great Salt Lake (a saline lake), and elsewhere.
Stansbury Island
Stansbury Island

Great Salt Lake, Utah

Joulters Caye
Joulters Caye

off Andros Island, Bahamas

Playa Mar de Cristal
Playa Mar de Cristal

Islas Menoras, Spain

Windblow Berm
Windblow Berm

Qater

Antelope Island
Antelope Island

Great Salt Lake, Utah

Further information on ooids may be found at Simm Sepp's Blog, Sand Atlas