Moon Rock
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Moon rock describes rock that formed on the Moon. The term is also loosely applied to other lunar materials collected during the course of human exploration of the Moon. The rocks collected from the Moon are measured by radiometric dating techniques. They range in age from about 3.16 billion years old for the basaltic samples derived from the lunar maria, up to about 4.5 billion years old for rocks derived from the highlands. Based on the age dating technique of "crater counting," the youngest basaltic eruptions are believed to have occurred about 1.2 billion years ago, but we do not possess…mehr

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Moon rock describes rock that formed on the Moon. The term is also loosely applied to other lunar materials collected during the course of human exploration of the Moon. The rocks collected from the Moon are measured by radiometric dating techniques. They range in age from about 3.16 billion years old for the basaltic samples derived from the lunar maria, up to about 4.5 billion years old for rocks derived from the highlands. Based on the age dating technique of "crater counting," the youngest basaltic eruptions are believed to have occurred about 1.2 billion years ago, but we do not possess samples of these lavas. In contrast, the oldest ages of rocks from the Earth are between 3.8 and 4.28 billion years old.