An apatite sample separated from the 3.8 Ga (zircon SHRIMP U-Th-Pb age) meta-quartz-diorite sample in Anshan area has been dated using SHRIMP II.

• 本文报道了鞍山地区3.；8Ga(锆石SHRIMP年龄)变质石英闪长岩中磷灰石SHRIMP U-Th-Pb定年结果。