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 ...

Its pitted surface and dark coloration immediately set it apart ... the possibility that Skull Hill could be a chunk of igneous rock, formed from cooling magma and potentially ejected by an ...

Foran Mining Corporation is pleased to announce additional results from the Winter 2025 drill program which consisted 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 ...

The scientists dated the rocks using zircon, a mineral in gneiss, the GSA said. "Dating zircon grains using ... techniques is now celebrated as the optimal method for determining when igneous ...

Slope streaks once believed to be signs of water on Mars might really be signs of rockfall and high winds, a new study says.

A new study reveals that the aerobic nitrogen cycle in the ocean may have occurred about 100 million years before oxygen began to significantly accumulate in the atmosphere, based on nitrogen isotope ...