geochemistry

Meteorites Show Transport of Material in Early Solar System

September 08, 2020

New studies of a rare type of meteorite show that material from close to the sun reached the outer solar system even as the planet Jupiter cleared a gap in the disk of dust and gas from which the planets formed. The results, published this week in Proceedings of the National Academy of Sciences, add to an emerging understanding of how our solar system formed and how planets form around other stars.

Arizona Meteorite Points to Source of LL Chondrites

April 27, 2020

The 2016 Dishchii’bikoh meteorite fall in the White Mountain Apache reservation in central Arizona has given scientists a big clue to finding out where so-called LL chondrites call home. 

New Mineral Named for Alexandra Navrotsky

July 24, 2019
Navrotskyite, a uranium-bearing mineral found underground in Utah’s Blue Lizard mine, was named for Distinguished Professor Alexandra Navrotsky.

Mantle Neon Illuminates Earth’s Formation

December 05, 2018
The Earth formed relatively quickly from the cloud of dust and gas around the sun, trapping water and gases in the planet’s mantle, according to research published Dec. 5 in the journal Nature. Apart from settling Earth’s origins, the work could help in identifying extrasolar systems that could support habitable planets. 

Rare Feat: Three UC Davis Geochemists Honored at Goldschmidt Conference

June 29, 2016
Three UC Davis geochemists who improved our understanding of Earth and the solar system will be honored at the Geochemical Society’s 2016 Goldschmidt Conference in Yokohama, Japan, on June 30 and July 1. This is the first time in the history of the Geochemical Society that three researchers from the same institution will receive society honors in the same year.

Study Casts Doubt on Mammoth-Killing Cosmic Impact

January 06, 2015
Rock soil droplets formed by heating most likely came from Stone Age house fires and not from a disastrous cosmic impact 12,900 years ago, according to new research from the University of California, Davis. The study, of soil from Syria, is the latest to discredit the controversial theory that a cosmic impact triggered the Younger Dryas cold period.