Early Norian. Dachstein-type reef according to G. Stanley (coral-calcareous sponge reef mound)
RCM Edit May 2015: Updated with semi-quantitative data from Martindale et al 2012. This changes the patch reefs from coral-sponge reef mounds to microbial-coral or microbial-red algal true reefs. Several of the patch reefs show subtle vertical and horizontal zonation of the diminutive framework builders although due to the small size of the framework builders, this is difficult to see in outcrop. Summit Point reefs are multiple stacked patch reefs, roughly 5-60m thick with skeletal and oncoidal wackestones to floatstones (oncoids, ooids, and intraclasts or skeletal debris) between reef buildups.