Island basalts hold answers to volcanic rocks journey

Island basalts hold answers to volcanic rocks journey

The journey for volcanic rocks found on many volcanic islands began deep within the Earth. Brought to the Earth's surface in eruptions of deep volcanic material, these rocks hold clues as to what is going on deep beneath Earth's surface. A group of current…

Deep-sea volcanoes could also explode

Deep-sea volcanoes could also explode

Between 75 and 80% of all volcanic activity on Earth takes place at deep-sea, mid-ocean ridges. Most of these volcanoes produce effusive lava flows rather than explosive eruptions, both because the levels of magmatic gas (which fuel the explosions and are made up of…