Researchers uncover a possible active underwater volcano chain near the Cook Islands, hinting at fresh geological activity.

A massive eruption of magma around 135 million years ago may have been the driving force behind the tectonic rift that split ...

It shows the underground plumbing system that provides molten and partly molten rock ... The Juan de Fuca plate of Earth's Pacific seafloor crust and upper mantle is shown in blue on the left ...

Maui's Haleakala volcano and the rest of the Hawaiian Islands formed out of molten lava as the Pacific ... Haleakala originated as a vent on the seafloor about two million years ago.

are formed by magma from the molten interior of the ... on the earth’s surface or ocean floor. As the surface is much cooler than the mantle, the rock cools very quickly, so the mineral crystals ...

Create new sea floor. You now have the power to change the ... a divergent boundary occurs where two plates move apart, allowing magma, or molten rock, to rise from the Earth's interior to fill ...

The Earth's interior is composed of four layers, three solid and one liquid—not magma but molten metal ... slow-moving icebergs. Seafloor is made of a denser rock called basalt, which presses ...

Lava began bubbling out of Hawaii’s most active volcano once again on Tuesday as Kilauea's sporadic eruption resumed.The eruption restarted at midday when when molten rock began pouring out of a ...