Portal:Earth sciences/DYK/10

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 * ... that volcanic fumaroles deposit more than 240 distinct, rare fumarole minerals (examples pictured)?
 * ... that the permeability of rocks affected by faults can increase or decrease as a result of seismic activity?
 * ... that fossils of the cypress Taxodium dubium have been found as far north as Spitsbergen and Denali?
 * ... that the 1888 eruption of Ritter Island reduced the 780 m volcano to a height of just 140 m?
 * ... that fossil echinoids (example pictured) can be used to date the various chalk strata of the White Cliffs of Dover?
 * ... that during the 2020 Zagreb flash flood, residents broke into a dam control building to drain floodwaters from the city?