Smithsonian researchers trekked to a remote site in northern Canada to collect four-billion-year-old rock samples that could ...

The oldest rock in the United States has been discovered in Michigan, with zircons dating back 3.82 billion years.

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

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

Michigan, Minnesota and Wisconsin all feature ancient rocks known as gneisses — metamorphic rocks banded ... for determining when igneous rocks formed," the report said. The technique involves ...

Michigan, Minnesota and Wisconsin all feature ancient rocks known as gneisses — metamorphic rocks banded ... for determining when igneous rocks formed," the report said. The technique involves ...

The results help constrain the metamorphic conditions and fluid interactions ... where fresh samples were collected from the Hazara Basin formation. All collected rock samples were cut and ground in ...

Located in central Bohai Bay, with an average water depth of approximately 20 meters, the project, which is also the world's largest metamorphic buried hill ... oil extraction and reinject it back ...

Discussion: The chronology of volcanic rocks cross different formations of the ... The lithology of the Lieryu Formation is mainly composed of metamorphic rhyolite-decite interbedded with basalt, ...