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Tanzania’s Ol Doinyo Lengai is the only active volcano known to erupt natrocarbonatite, the coolest lava on Earth: it flows at roughly 500–590°C, against 1,100°C or more for Hawaiian basalt. Fresh flows look black or dark brown in daylight, then react with rain and atmospheric moisture until the mountainside turns chalk-white—as though someone spilled milk over the lava.
2+ day, 4+ hour ago (791+ words) Ol Doinyo Lengai’s 500–590°C carbonate lava flows black, then atmospheric moisture and rain transform its unstable minerals into pale, rapidly weathering surfaces....
Scientists debunk volcano myths
3+ week, 3+ day ago (572+ words) A volcano does not ‘smoke’, and a magma chamber is not an underground swimming pool “Volcanoes provide spectacular imagery, which makes them a fertile ground for tall tales,” says Poppe. “But simplifications can easily take on a life of their…...