【摘要】 漾濞县小乙峡村苍山变质岩中获得２４０８Ｍａ，Ｓｍ－Ｎｄ全岩等时线年龄，证实点苍山变质带存在古元古代早期的基底岩石，并有可能存在晚太古代的表壳岩更多还原

【Abstract】 Abstract The Sm Nd whole rock isochron age 2408 Ma is obtained in the Diancang Mountains metamorphic rock at the Xiaoyixia village,Yangbi lt confirms there are Early Paleo-Proterozoic basement rocks in the Diancang Mts metamorphic zone And it is possible that there are surface crust rocks of Late Archeozoic in it as well更多还原