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金沙江变质岩系,习惯上泛指沿川、滇、藏三省交界部位之金沙江流域分布的一套浅——中深变质岩,主要由各种片岩、板岩、千枚岩、石英岩、结晶岩、大理岩和变中基性火山岩等组成,局部变质程度较深时则出现混合岩。对金沙江变质岩系地层时代的归属问题历来就有争议。五十年代李璞和曾鼎乾将其命名为“金沙江群”和“德格群”,时代定为前寒武纪。这一认识在中国科学院地质研究所的1959年公开出版物《中国大地构造纲要》一书中也曾被引用,称“金沙江河谷地区发现的古老变质岩系和点苍山太古代片麻
The Jinshajiang metamorphic rocks generally refer to a set of shallow-middle metamorphic rocks distributed along the Jinsha River basin at the junction of Sichuan, Yunnan and Tibet provinces, and are mainly composed of various types of schist, slate, phyllite, quartzite, Crystalline rocks, marble and metamorphic volcanic rocks and other components, the local metamorphic degree is deeper when the mixed rock. The ownership of the Jinshajiang metamorphic strata has always been controversial. In the 1950s, Li Pu and Zeng Dingzeng named it “Jinshajiang Group” and “Dege Group”, and the era was designated as Precambrian. This understanding has also been quoted in the 1959 publication “Outline of China’s Earth’s Structure” published by the Institute of Geology, Chinese Academy of Sciences, saying "the ancient metamorphic rocks discovered in the Jinsha River valley and the Archean Pheasant