14-December-2006, 06:01 PM
|
 |
Order of Kilopi
|
|
Join Date: Jun 2003
Location: old york
Posts: 5,738
|
|
From Here
The abundances of radioactive elements in rock samples can be used to tell the age of the rock in a process called Radioactive Dating. When such techniques are applied to the Lunar rock samples, one finds the following:
---snip----
...Lunar Highlands rocks returned by Apollo 16 are about 4 billion years old. The oldest Lunar rock found was located by Apollo 17 and appears to be about 4.5 billion years old.
.
|