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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Rahul kumar
Atoll is a coral reef enclosing a lagoon. Atolls consist of ribbons of reef that may not always be circular but whose broad configuration is a closed shape up to dozens of kilometres across, enclosing a lagoon that may be approximately 50 metres (160 feet) deep or more. Please find the attached figure indicating about the stages involved in atoll formation.