Figure 4
From: Bryozoans are Major Modern Builders of South Atlantic Oddly Shaped Reefs
Simplified core log showing the main reef framework types, sedimentary facies, and 14C AMS age data collected from Abrolhos reef at 15 m water depth. Vertical (15V-01, 15V-02) and horizontal cores (15H-03, 15H-04) were sampled from the pinnacle’s top and wall, respectively. (A) Close-up image of a shallow/younger horizontal core sample showing the reef framework composed mainly by tick multilayers of encrusting bryozoan colonies interspersed with CCA; (B) Close-up image of a deeper/older horizontal core sample showing preponderance of bryozoans and CCA over corals in the reef framework building.
