In this case, we must remember a bit about the archean, this eon is characterized by intense volcanic activity and unstable cortex, nonetheless, there is recor of water in some places. Therefore taking into consideration this information we can say that by the end of the archean eon the cooling and diminished surface activity lead to the formation of rocks, the previous lava of volcanos and the constant movement of tectonic plates, left very few remnants of rocks of those days nonetheless some has survived until this days, like some rocks found in Greenland.