Opus 2

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between ~750 and ~550 million years

Snowball Earth refers to hypotheses regarding paleoclimatic global-scale glaciation, claiming that the Earth's surface was nearly or entirely frozen at some points in its past. The occurrence of Snowball (or Slushball) Earths remains controversial . Proponents claim it best explains sedimentary deposits generally regarded as of glacial origin at tropical latitudes and other enigmatic features of the geological record. Opponents contest the implications of that geological evidence and the geophysical feasibility of an ice- or slush-covered ocean. (click to see all the article on Wikipedia)

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~700 Ma
SELECT pid_opus1_case, int_statut, int_image_en AS als_flag_image FROM tb_opus1_case ORDER BY pid_opus1_case ASC