Yooperlites are a variety of sodalite-rich syenite found in the Upper Peninsula of Michigan.

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 ... celebrated as the optimal method for determining when igneous rocks formed," the report said. The technique involves ...

Perseverance is racing through its fastest science mission yet, uncovering ancient rocks that hint at Mars’ violent, watery ...

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

Michigan, Minnesota and Wisconsin all feature ancient rocks known as ... celebrated as the optimal method for determining when igneous rocks formed," the report said. The technique involves ...

Granite and other rocks made from recycled magma Igneous rocks, which form from magma ... and even Jupiter’s angry little moon Io are all overwhelmingly volcanic. But ordinary magma doesn ...

We can add another Michigan discovery to the list related to the oldest rock in America! That's right, this particular rock ...

All of the types of mineralization in the Tamarack Intrusive Complex are characterized by delta S-34 values between -0.2 and 2.8 parts per thousand, values that are not strongly anomalous relative to ...