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"Earth Rock!" Four billion years ago, an asteroid blew up a piece of earth on the moon



Posted on January 25, 2019

  The Earth from the Moon NASA

"At later times on the Moon, the rocks of the Earth would have mixed with moon rocks, including the future landing site of Apollo 1

4 (below), where it was collected by astronauts and brought back to earth.

In overnight published findings in the science journal Earth and Planetary Science Letters, a sample collected during the Apollo 14 moon of 1971, the mission contained traces of minerals with a common chemical composition on Earth, which is very unusual for the Moon ,

The sample was loaned by NASA to Curtin University, where it was studied in collaboration with researchers from the Swedish Museum of Natural History, Australian National University and Lunar and Planetary Institute in Houston.

Research author Alexander Nemchin of Curtins School of Earth and Planetary Sciences said the 1.8 gram sample showed a similar ineralogy to a granite that is extremely rare on the moon but common on Earth.

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"The sample also contains quartz, which is even more unusual on the moon," said Professor Nemchin. "By determining the age of the zircon found in the sample, we were able to determine the age of the host rock for approximately four billion years, resembling the oldest rocks in the world. In addition, the zirconium chemistry in this sample is very different from any other zirconia ever studied in lunar samples and is remarkably similar to that of zircons on Earth. "

 Apollo 14 landing site

Professor Nemchin said that the chemistry of the zirconium moon sample showed that it formed at low temperature and probably in the presence of water and under oxidized conditions which makes it characteristic of the earth and highly irregular for the moon. 19659004] "It is possible that some of these unusual states may have occurred very locally and very briefly on the Moon, and the sample is the result of this brief departure from normality," said Professor Nemchin.

"An Easier Explanation This piece was shaped on Earth and brought as a meteorite to the surface of the Moon, which was created by an asteroid that hit the Earth about four billion years ago, throwing material into space and the moon

The Daily Galaxy on Curtin University


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