新疆库鲁克塔格基性岩墙群的四个样品的ＫＡｒ表观年龄为４５５６７３Ｍａ，等时年龄为２８７±１３Ｍａ。这一年龄与近几年报道的沿天山构造带的早二叠世火山岩年龄一致。氩初始值为５０８，在Ｐ型岩浆范围内，结合稀土、微量元素特征，认为岩墙群与地幔热柱有成因联系 The KAr apparent ages of four samples in the Kuruktagag-type dickets in Xinjiang are 455673Ma, with an isochronous age of 287 ± 13Ma. This age is consistent with the age of the Early Permian volcanic rocks along the Tianshan tectonic belt reported in recent years. The initial value of argon is 508. Considering the characteristics of rare earths and trace elements in the P-type magma range, it is considered that the dyke swarms have a causal relationship with the mantle plume