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报道秦岭勉略缝合带中段陕西省勉县安子山地区麻粒岩矿物Sm-Nd等时年龄和40Ar/39Ar年龄.由麻粒岩矿物样品给出的Sm-Nd等时年龄为206±55 Ma(2σ),INd=0.51302±7(2σ),MSWD=1.6.黑云母40Ar/39Ar坪年龄为199.7±1.7Ma(2σ).麻粒岩形成和抬升与印支期扬子克拉通陆块向秦岭微陆块俯冲碰撞、中朝克拉通华北陆块和扬子克拉通陆块最终拼合有关,并与大别地区超高压-高压变质岩的时代相一致和接近.
The Sm-Nd isochron age and 40Ar / 39Ar age of the granulite minerals in the Anzishan area, Mian County, Shaanxi Province, are reported in the middle Mianlian suture zone of the Qinling Mountains, and the Sm-Nd isochron age of 206 ± 55 Ma 2σ), INd = 0.51302 ± 7 (2σ) and MSWD = 1.6. The age of 40Ar / 39Ar plateau of the biotite is 199.7 ± 1.7Ma (2σ). The formation and uplifting of granulite and the migration of the Indosinian Yangtze craton into the Qinling Mountains The subduction and collision of the block, the convergence of the North China Craton North China Block and the Yangtze Craton block are related to and coincide with the age of the EHP-HPM in the Dabie area.