Etched onto rocks on a remote peninsula in Western Australia are millions of images drawn tens of thousands of years ago by ...

Yooperlites are a variety of sodalite-rich syenite found in the Upper Peninsula of Michigan.

Perseverance is racing through its fastest science mission yet, uncovering ancient rocks that hint at Mars’ violent, watery ...

"Dating zircon grains using ... techniques is now celebrated as the optimal method for determining when igneous rocks formed," the report said. The technique involves measuring the decay of ...

Geologists recently dated the age of Watersmeet gneiss, a type of rock in the Upper Peninsula, as the oldest in the U.S. Here ...

"Dating zircon grains using ... techniques is now celebrated as the optimal method for determining when igneous rocks formed," the report said. The technique involves measuring the decay of ...

Granite and other rocks made from recycled magma Igneous rocks, which form from magma (which is called lava when it erupts on the surface), aren’t anything special in our solar system.

Instead, researchers are now exploring the possibility that Skull Hill could be a chunk of igneous rock, formed from cooling magma and potentially ejected by an impact event or uncovered by erosion.

If it is not meteoritic in origin, another hypothesis is that it is an igneous rock, formed by the cooling of magma or lava, explained a member of the science team. On both Earth and Mars, iron- and ...

Another theory is that Skull Hill is an igneous rock formed when lava or magma cooled, possibly millions or billions of years ago. Such rocks are common on both Earth and Mars and often contain ...