No detailed locality description.
Three types of mounds in area.
Mudmounds
Coral-skeletal mounds
Coral-stromatoporoid skeletal mounds
Only Mudmounds better preserved: 15 thick, 50 m in width.
Compound reef mounds up to 50 m thick and 60 m across.
14 coral species, microbes and possibly stromatoporoids. Collection of Alroy.

Abstract or ref. 1135:
Near Gascoyne Inlet, the topmost Douro and and lowermost Barlow Inlet Formations record overall upward  shallowing from ramp to shallow shelf conditions. This transitional sequence contains bioherms of various sizes, from small isolated reef mounds 1 to 2 m across to larger, compound reef mounds over 50 m thick and 60 m across, as well as distinctive inter- and pre-reef mound facies. The larger reef mounds show stages intermediate in character between those in sponge-dominated reef mounds of the Douro Formation and in larger stromatoporoid-crinoid-dominated reefs in the Barlow Inlet Formation. Three principal reef mound facies developed in turn. An initial partly lithified lime mudstone, containing scattered corals and apparently relicit sponge-cryptomicrobial fabrics, developed on sheets of oncolitic storm debris in mainly low energy conditions between storm and fairweather wave bases. This lower facies of the reef mounds achieved up to 2 m relief above surrounding burrowed, soft, detrital and carbonate muds. With gradual shallowing, and progressively higher energy conditions above fairweather wave base, middle facies of coral-and crinoid-rich mudstone developed, flanked by coalescing aprons of coarse crinodal debris. The middle facies achieved a maximum relief of 4 m. Detrital and carbonate muds succeeded the grainy flankbeds, as abrupt deepening    restored conditions of low energy below fair-weather wave base. The ensuing upper facies of the reef mounds is more  varied, comprising sparsely fossiliferous and locally fenestral lime mudstones, patchy coral bafflestone and bindstone, coarse encrinites, and substantial culminating stromatoporoid bindstone. Relief of the upper facies was progressively    reduced by onlap of adjacent muds. The reef mounds were ultimately engulfed by these muds, and a laterally discontinuous, biostromal, Stylopleura rudstone caps the sequence. With resumed shallowing, the sea floor again was exposed to more persistently turbulent conditions above fairweather wave base. Large  stromatoporoid-crinoid-dominated reefs formed just above the transitional sequence on topographic highs inherited from the reef mounds, and are flanked by substantial grainy crinoid-rich facies. 