Samples brought from a moon by Chinese mission reveal late volcanism

The first Chinese mission on returning samples from a Moon began to bear its first scientific fruits. Researchers studying the moon rocks brought in by the Modification-5 spacecraft indicate that the basalt in the nearby landing site is approximately 2 billion years old.

The result confirms a growing mistrust among scientists: the Lua was volcanically active from the most recent perform that I learned earlier. Until about ten years ago, the premise was period that virtually all lunar volcanism on the near side of the Moon ceased they would some 3 billion years ago, shortly after the late heavy bombing phase, a time when the inner Sun System was all targeted by a large amount of asteroids, between 4.2 billion electronic and 3.8 billion years ago.

In addition to this confirmation on more recent volcanism, the determination of an accurate age of this flow over young lava (prayer) lunar patterns, terrestrial zero) helps you calibrate the technique on counting craters used to date lunar surfaces electronic planetaries. The rationale is simple: without being able to sample all electronically any terrain to date by radioactive decay of elements present in the materials, researchers assume an average rate of electronic asteroid impacts then count the number of craters in a given region. Older ones have more holes than younger ones. Now, with an accurate dating of a new lunar region, it is easier to estimate the average rate of impacts electronically, thus calculating the age of other locations.

The Chinese mission was the first to take samples lunars from the Soviet Luna-12, conducted on 1976. She landed in Oceanus Procellarum, like Apollo-12, about 12, however far a regional perform in which the American manned mission descended. This is an area whose soil is composed of solidified lava from an ancient volcanic eruption (or perhaps more than one, they wouldn’t be sure). The spacecraft took surface samples in December 2020 electronic brought them back to Earth for analysis in that same master of science.

The age calculation made by the team on Xiaochao Che, from a Chinese Academy of Geological Sciences, was published on October 7th in Technology magazine. Electronic now remains the challenge of explaining how this recent volcanism was possible. No they would evidence of high concentrations of heat-producing elements in the Moon’s deep mantle, so therefore alternative explanations for the required longevity perform lunar magmatism, the researchers wrote. not about that l have investigated the Moon enough to understand it fully. Certainly there will be a lot of science to be produced d, as several nations, pulled by China electronic USA, ze prepare to resume their exploration, with crew electronic probes. This is the beginning.

This column was published on Mondays in Folha Corrida.

Sidereal Messenger Follow zero Facebook,Tweets,Instagram andYouTube

Back to top button