Complex sentence: Amîtsoq gneisses in southern West Greenland were found having similar appearance and composition but were dated of a range of ages between 3.9 Ga to 3.6 Ga, by U-Pb zircon dating.
Split into simpler sentences: Amîtsoq gneisses in southern West Greenland were found having similar appearance and composition. However, The age yielded is a range between 3.9 Ga to 3.6 Ga, by U-Pb zircon dating.