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

Until now, the oldest-known rocks were 4.03 billion years old, found in Canada’s Northwest Territories. Tiny zircon crystals ...

A belt of volcanic rock along the eastern shore of Hudson Bay in Canada’s Quebec province has been confirmed as the oldest ...

Sedimentary rock is comprised of sediment, as the name suggests. Over time, tiny minerals, sand, rocks, and debris layer on ...

Fluids exert a key control on the mobility of elements at high pressure and temperature in the crust and mantle. However, the prediction of fluid composition and speciation in compositionally complex ...

What they were after was a type of metamorphic rock called gneiss (pronounced “nice”). It forms when igneous rocks like granite undergo intense heat and pressure, changing their structure and ...

Mica schist is a metamorphic rock that formed through the intense heat and pressure generated when Africa and North America slammed together to create Pangaea, about 275 million years ago. How would a ...

1 Introduction As key accessory minerals in metamorphic rocks, zircon and monazite play a vital role in geochronology, providing critical insights into the timing of metamorphism and the thermal and ...

While a volcanic or metamorphic (wherein one type of rock is transformed into another, usually under excess temperature and/or pressure) origin may explain its stripes, it doesn't explain how ...

Metamorphic rocks Metamorphic rocks are formed by the metamorphism process. Metamorphism is the process of changing the characteristics of the pre-existing rocks under the influence of heat and ...