The formation was deposited within a broad, shallow epicontinental sea. Ten lithofacies were deposited in three distinct depositional environments: supratidal, intertidal, and subtidal. Supratidal sediments are mottled or laminated dolomite which tends to be feldspathic, contains bituminous material, and shows birdseye textures and undulating stromatolitic structures. Fossils are absent. Intertidal sediments have tidal flat and tidal channel facies. Subtidal sediments are well-bedded lime mudstones and calcarenites with oolids, abundant skeletal fragments, and intraclasts. The depositional history is outlined.

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