Examples of Carbonate Reefs
ÜEniwetok Atoll
4600 feet thick
100,000 years to form at fastest known rates
Erosion and land-plant pollen at some levels
ÜBuried Reefs (TX, Alberta)
Underlaid by 1000s ft of sediments
Reefs up to 1000 ft thick, many miles long
Evidence that reefs have grown in place