Settlers in the Valley also saw the rock deposit as a source of building material, with basalt quarried from Cowiche Canyon ...

Igneous rocks are formed when magma cools and turns into a rock. This cooling can either be intrusive, where the magma pool gradually cools and the magma solidifies into an igneous rock.

The main surprise, Shuster said, is that the rocks collected from four sites on the floor of Jezero Crater are igneous cumulate rocks -- that is, they were formed by the cooling of molten magma ...

Igneous rock is formed by the cooling of molten rock, either at the surface (lava), or underground (as granite or other similar rocks). The heat of molten rock usually incinerates organisms rather ...

Cite this article The Physical Chemistry of Igneous Rock Formation: a General Discussion held by the Faraday Society, the Geological Society, and the Mineralogical Society, October 1924 .

Next time you're hiking around northern Yellowstone, keep your eye out for coarse-grained crystalline igneous rocks —you may just be looking at a rock that formed billions of years ago.

These minerals are generally found in igneous rocks or volcanic areas on Earth. That’s strong evidence that the Seitah rocks formed as a large body of molten rock cooled, says Stack Morgan.