Basaltic lava and the different types of lava flows Basalt is one of the most common types of rock in the Earth's crust, according to USGS, and makes up most of the ocean floor.

Good news! Scientists say the next time the supervolcano in Yellowstone erupts, it won't be a humanity-ended explosion.

Lava flows are outpourings of molten rock on the earth's surface. They're very common in volcanic eruptions, and they come in different forms: pahoehoe an a'a.

Lava flows are outpourings of molten rock on the earth's surface. They're very common in volcanic eruptions, and they come in different forms: pahoehoe an a'a.

The following chart lists common lava types and their flow rates. Note that lava flows pass through a range of viscosities as they cool and solidify; as lava loses heat, its viscosity increases.

This type of lava will flow faster, meaning it could more quickly cut off evacuation routes and take over neighborhoods with less warning.

In south-central New Mexico, a massive lava flow stretches some 47 miles (75 kilometers) across the desert landscape. Know as the Carrizozo Malpais, it is left over from volcanic activity that ...

The flow of lava following the latest volcanic eruption in Iceland has slowed down, officials said on Sunday. On Saturday evening, the volcano erupted for the fourth time in four months near the ...

Firefighters are battling a 17-acre blaze near Firth on the 300 block of East River Road at the edge of the Hell’s Half Acre ...

Lava flows are outpourings of molten rock on the earth's surface. They're very common in volcanic eruptions, and they come in different forms: pahoehoe an a'a.

Lava flows are outpourings of molten rock on the earth's surface. They're very common in volcanic eruptions, and they come in different forms: pahoehoe an a'a.