Ancient air trapped in rock salt for 813 million years reveals clues to Earth’s past
Tuesday, August 23, 2016 - 13:31
in Earth & Climate
Ancient air trapped in rock salt for 813 million years is changing the timeline of atmospheric changes and life on Earth. Defining past atmospheric compositions is an important yet daunting task for geologists. Most methods for determining past Earth surface conditions rely on indirect proxies gleaned from ancient sedimentary rocks. Further complicating matters, sedimentary rocks […]