Magma is the name given to molten material inside the earth (volcano) whereas lava is the name given to molten material which is often ejected from a volcano and then cools and solidifies.

After suspecting the presence of a series of underwater volcanoes near the Cook Islands, researchers have now mapped out the newly discovered structures.

After suspecting the presence of a series of underwater volcanoes near the Cook Islands, researchers have now mapped out the ...

When a volcano erupts there can be lava, ash, steam or gaseous emissions. Sometimes eruptions are explosive and lava is thrown out as volcanic bombs. Hotspots are places where the magma rises up ...

Several Underwater Volcanoes Found on the Seafloor About 60 Kilometers from Rarotonga Island.

Scientists working alongside the U.S. Coast Guard have discovered a 1,640-foot-tall (500 meters) structure that looks like an underwater volcano off the coast of Alaska. The structure may be ...

a volcano-like structure rising more than 500 meters from the seafloor and possibly emitting gas. The discovery came as scientists from different organizations were aboard the Healy, one of two ...

Figure 1: Morphology and internal structure of a mud volcano. The morphological appearance of a crater rim, moat and central pedestal mirrors that of magmatic calderas. Evans and co-authors ...