The mound, which is 8.5 m thick, consists of small microherms embedded in a matrix of silt to very fine sand size oncoidal tuberoid peloid grainstone.
The biodetrital mound is abruptly overlain by a layer of oncoid tuberoid peloid packstone 0.8 to 1.7 m thick (0.9 m of core are missing), which appears identical to the matrix of the biodetrital mound, but lacks recognizable microherms.
The mound is abruptly overlain by tuberoid peloid packstone and this in turn is overlain by oolitic grainstone with keystone vugs.
Matrix is dominated by peloids, but contains tuberoids, other intraclasts, oncoids, thin-shelled bivalves, benthic foraminifera, smooth-walled ost racodes, echinoid spines, and gastropods, in approximate order of decreasing abundance.
Microherms grew by expansion of grounded oncoids and tuberoids. Some larger microherms exhibit shapes suggesting retrenchment and rejuvenation, and in some cases contain almost as much enveloped matrix material as they do microherm material (KopaskaMerkel and Schmid, 1999).