From Wikipedia, the free encyclopedia
Kukkekivi (inglise dropstone) on kivi merepõhja ühtlaselt peeneteralistes setetes.
Kukkekivid on merepõhja sattunud enamasti sulavatest jäämägedest, aga ka merepinnal hulpivaist puujuurtest, mis kannavad endaga mulda ja väikeseid kive.
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