Ostracode fragments are the most commonly encountered skeletal grains, with sparse bivalve or brachiopod fragments and possible codiacean algae also present. Intraclasts, micritic peloids, and rare phosphatic grains are nonskeletal components.
Fossil fragments remain calcareous, though many are filled or replaced by secondary calcite spar.
Anhydrite is also an important authigenic mineral, forming large, coarsely crystalline, replacive patches and mold fillings. As such, this sample is characterized by wavy and thinly interbedded, interlaminated anhydrite and dolomitic mudstone. Thin inter-laminae or stringers of organic material with pyrite are also present. Dolomite texture is dominated by microcrystalline, subhedral, loosely packed crystals, with intercrystalline porosity locally filled by anhydrite. Several layer-parallel, open fractures may enhance horizontal permeability in less porous beds.