Previously, estimates and hints of the early Earth's magnetic field have come from individual mineral crystals called zircons found within ancient rocks from Western Australia. These had suggested ...

In a new paper, Jordan Jensen and Alexis Ault introduce a new forensic tool designed to enhance our understanding of how ...

Third, magnetism in rocks can be used to estimate ... correlate fossil sites across large discontinuous areas. Some minerals in rocks and organic matter (e.g., wood, bones, and shells) can contain ...

Minerals are typically formed when molten rock, or magma ... color, density, and magnetism. They're also identified by the ways in which they break, or the type of mark, or streak, that they ...

As the magma cooled to form what is today the world's solid outer crust, magnetism was locked into minerals containing ... elements in the crust. Igneous rocks formed from volcanic lava.

Iron oxide minerals are found in rocks around the globe. Some are magnetic, and some of them rust—especially when exposed to water and oxygen. These characteristics provide clues about the ...

Have you ever played with a magnet and stuck it in a sandy wash? It will pick up lots of black stuff. Some call it black sand; some might think ...