Sentences with phrase «within zircon»

But in order for today's magnetic intensity readings of the magnetite to reveal the actual conditions of that era, the researchers needed to make sure the magnetite within the zircon remained pristine from the time of formation.

Tarduno's new results are based on the record of magnetic field strength fixed within magnetite found within zircon crystals collected from the Jack Hills of Western Australia.

As the uranium and thorium decay, they produce lead isotopes that get trapped within the zircons.

Not exact matches

The disparity is a clue that the zircon formed within rock that had interacted with water on Earth's surface.

As the zircons were radioactively dated to be as old as 4.25 billion years, the new findings suggest that carbon - based life may have been present on Earth within the first 300 million years after planetary formation, possibly as a «planetary mega-organism» in Earth's oceans (Michael Marshall, New Scientist, November 25, 2011).

Utilizing a new instrument that takes 3D images of individual atoms within a crystal, an international team of investigators has proved a rare sample of zircon is the oldest piece...

In addition to rocky asteroids and icier bodies further out from the Sun, many agglomerated into larger planetesimals that eventually collided to form planets like the Earth, and more than 250 minerals, including olivine and zircon, developed within the planetesimals with the help of melting, collisional shocks, and reactions with water.

Triangular white zircon gemstones are delicately set within an intricate Sterling silver triangle for a detail that is small, yet striking.