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Moon rock or lunar rock is rock originating from Earth's Moon. ... In contrast, the oldest ages of rocks from the Earth are between 3.8 and 4.28 billion years.
The main fragment of meteorite NWA 11119, the oldest dated whole rock. One of the oldest Martian meteorites found on Earth, Allan Hills 84001 has been measured to have crystallized from molten rock 4.091 billion years ago. [17] The Genesis Rock (Lunar sample 15415), obtained from the Moon by astronauts during Apollo 15 mission, has been dated ...
The oldest of the Mg-suite rocks have crystallization ages of about 3.85 Ga. However, the last large impact that could have been excavated deep into the crust (the Imbrium basin) also occurred at 3.85 Ga before present. Thus, it seems probable that Mg-suite plutonic activity continued for a much longer time, and that younger plutonic rocks ...
The Pre-Nectarian period is defined from the point at which the lunar crust formed, to the time of the Nectaris impact event. Nectaris is a multi-ring impact basin that formed on the near side of the Moon, and its ejecta blanket serves as a useful stratigraphic marker. 30 impact basins from this period are recognized, the oldest of which is the South Pole–Aitken basin.
Troctolite 76535. NASA image of Troctolite 76535. Troctolite 76535 is a lunar sample discovered and collected on the Apollo 17 mission in 1972 in the Taurus–Littrow valley. It has a mass of about 156 grams (5.5 oz) and is about 5 centimeters (2.0 in) across at its widest point. It was collected by geologist astronaut Harrison Schmitt as part ...
These experiments have confirmed the age and origin of the rocks as lunar, and were used to identify lunar meteorites collected later from Antarctica. [38] The oldest Moon rocks are up to 4.5 billion years old, [ 37 ] making them 200 million years older than the oldest Earth rocks , which are from the Hadean eon and dated 3.8 to 4.3 billion ...
The Genesis Rock (sample 15415) is a sample of Moon rock retrieved by Apollo 15 astronauts James Irwin and David Scott in 1971 during the second lunar EVA, at Spur crater on Earth's Moon. With a mass of c. 270 grams (4,200 grains), [ 1 ] it is currently stored at the Lunar Sample Laboratory Facility in Houston, Texas .
Radiometric dating. Radiometric dating, radioactive dating or radioisotope dating is a technique which is used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed. The method compares the abundance of a naturally occurring radioactive isotope within the material to ...