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Igneous or magmatic rocks The most primitive rock type forms when magma (molten rock) solidifies - either inside the earth (plutonic rocks) or during volcanic eruptions (volcanic rocks). A short overview.
Latest quakes at Katla volcano One of Iceland's most active and dangerous volcanoes is showing signs of unrest and statistically due for a new eruption. Earthquakes could give a clue.
Top 20 quakes in 2016 Several magnitude 7 quakes occurred in 2016 (but none above M8): Papua New Guinea, NZ, Ecuador, Solomon Islands, Sumatra, Chile, Alaska and others - nearly all major earthquakes were located near active subduction zones. See the top 20 list of largest quakes in 2016 with this map.
From Stromboli to Etna Get to know some of the most active and interesting volcanoes in the world: famous Mt. Etna on Sicily; Vulcano, in the Ancients'belief home to Vulcanus, God of Fire; Lipari with its spectacular obsidian and pumice deposits; and Stromboli, "Lighthouse of the Tyrrhenian Sea", known for its permanent fireworks!