Outstanding feature	High energy concentric aragonite ooids
Folk Classification	Well sorted ooids
Dunham Classification	Well sorted ooids
Common Grains	Ooids
Sorting	Well sorted
Rounding	Well rounded
Micritization & envelopes	A few coated grains
Cement & diagenetic fabric	Uncemented
Porosity	Unconsolidated sediment, highly porous
Depositional Setting	High energy shoal
Diagenetic history	Precipitation of aragonite on pellets

Striking high energy concentric aragonite ooid grains collected where they are forming in the vicinity of Joulters Cays on the NE margin of the Great Bahamas Bank. Note the empty pores within the ooids that are the product of dissolution induced by boring cyanobacteria (blue-green algae).