Sentences with phrase «of zircon samples»
Linking the year to the event was impossible prior to the recent breakthrough in the processing of zircon samples.
http://discovermagazine.com/ Not exact matches
A research team led by John Tarduno of the University of Rochester in New York went to Australia's Jack Hills and collected ancient samples of rock containing the crystallized mineral zircon.
Then in 2004, geochronologists at Berkeley — Ludwig, Renne, and Roland Mundil, working with Australian geologist Ian Metcalfe — improved the pretreatment of volcanic zircon samples gathered in China.
Professor Luca Caricchi adds: «When we determine the age of a family of zircons from a small sample of solidified magmatic rock, using results from the mathematical model we have developed, we can tell what the size of the entire magma chamber was, as well as how fast the magma reservoir grew.»
Instead of being randomly distributed in the sample, as predicted, lead atoms in the zircon were clumped together, like «raisins in a pudding,» notes Valley.
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...
For the study, they looked at data for roughly 120,000 zircon grains from thousands of samples across the globe.