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Nyamuragira volcano photos Africa's version of Mauna Loa, Nyamuragira (or Nyamulagira) is a massive basaltic shield volcano neighboring Nyiragongo. It is one of the most active volcanoes in the world and has voluminous eruptions every few years.
Redating the Minoan eruption of Santorini A 3600 y.o. fossil olive tree discovered in the Minoan pumice allows to refine the date of the Minoan eruption on Santorini to the 17th century B.C.
Divergent plate boundaries in oceans Two ocean plates move apart from each other. Hot upwelling mantle material forms magmas that continuously produce new oceanic crust. An ocean widens.