igneous rock

1. Rocks formed by the cooling and solidifying of molten materials. Igneous rocks can form beneath the Earth's surface, or at its surface, as lava.

Granite, solid volcanic lava, and basalt are examples of igneous rock.

Example Sentences

In the process they learned that “a mid-crust composed of fractured igneous rocks saturated with liquid water best explains the existing data.”

From Salon

Now if you were awake in high school science class, you’re thinking, igneous rock: volcanic lava.

From Los Angeles Times

Among the new discoveries was finding primary igneous rocks in Jezero Crater.

From Science Daily

One popular theory suggests that minerals released by the weathering of igneous rock sucked enough carbon dioxide from the atmosphere to set off a deep freeze.

From New York Times

Some of Rum's igneous rocks have a very similar mineral and chemical content to those found in the Séítah Formation within the Jezero crater on Mars.

From BBC