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

In a recent study, geologists say Michigan is home to the oldest known rock in the nation. Watersmeet gneiss is found in Michigan's Upper Peninsula. Minnesota's Morton gneiss previously held the ...

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 ...

This 1930s educational film explores the natural landscapes, geological formations, and agricultural practices of the time. It features scenes of farmers tilling soil, majestic mountain roads ...

Bethesda is a slate town of 5,000 people in north-west Wales ripe for romanticisation – or that’s before you hack through its layers. It’s a stunning point between the mountains, rivers, lakes 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 ...