Beryllium 10 dating
Their work was published in 2016 in GSA Today, the journal of the Geological Society of America.
Beryllium dating is used to estimate the time a rock has been exposed on the surface of the Earth, as well as erosion and sedimentation rates. Like carbon-14, most of it is formed in the earth’s upper atmosphere.
If rocks are undisturbed for millennia, differences in the cosmogenic isotope content of the upper and lower surfaces accumulate.
These differences can be translated into a measure of time since the rocks were either first exposed to sunlight, or covered over and isolated from the cosmic ray flux.
Cosmogenic nuclide dating is often used to determine the dates of important geological events, such as glacier advances and retreats, rock slides, meteor impacts and lava flows.
In the study, researchers determined that the bodies of people who have this protein create a unique molecular "pocket," which captures beryllium ions and triggers an inflammatory response in the lungs."The immune system does not actually 'see' beryllium," study author John Kappler, a researcher at National Jewish Health, said in a statement.
Beryllium was discovered in 1798 by the French chemist Louis Nicolas Vauquelin, who found it in the oxide form in beryl and a green-colored variety of beryl, emerald.
The metal was isolated in 1828 by two chemists, Friedrich Wölhler from Germany and Antoine Bussy from France, who independently reduced beryllium chloride (Be Cl) with potassium in a platinum crucible, according to the Jefferson Lab.
Beryllium has long been a topic of interest to researchers who have examined its harmful effects on health in people who are exposed to the metal on a daily basis for long periods of time.
However, this risk does not apply to people in the general population who do not actually handle beryllium, Pepper said."Beryllium becomes harmful when it is generated into an airborne particulate …