The oldest terrestrial materials ever dated by scientists are extremely rare zircon minerals that were discovered in western ...

Earth formed about 4.6 billion years ago, during the geological eon known as the Hadean. The name "Hadean" comes from the ...

It is the test bed for a collaboration between academics, space agencies and mineral exploration companies which aims to ...

Scientists agreed the rocky outcrops in a remote part of Quebec, Canada, were ancient. But were they really Earth’s oldest?

Rocks from a coastal town are assisting scientists to develop equipment which could enable astronauts to investigate the ...

Metamorphic rock is the result of the transformation of a pre-existing rock type, the protolith, in a process called metamorphism, which means "change in form". The protolith is subjected to heat ...

Metamorphic rock is formed when existing rock is transformed under high heat and pressure, which generally destroys any fossils that were in the rock before it was metamorphosed.For example, marble is ...

Places such as Purgatory Chasm and Millstone Hill, in Worcester's Green Hill Park, bear witness to the work of the glaciers.

Gneiss is a metamorphic rock composed of bands and lenses of various minerals, according to Geology.com. "Our candidates for the oldest U.S. rock are ancient gneisses with complex histories.

Sedimentary rock is one of the three main rock groups (along with igneous and metamorphic rocks) and is formed in four main ways: by the deposition of the weathered remains of other rocks (known ...