1∶25万福贡县幅、丽江市幅、腾冲县幅、大理市幅、潞西市幅、凤庆县幅地质调查成果与进展

1∶250 000 Fugong, Lijiang, Tengchong, Dali, Luxi and Fengqing Sheets in Yunnan

认为牛井山蛇绿构造混杂岩与铜厂街蛇绿岩相当;新建石鼓蛇绿构造混杂岩;沿怒江断裂带多处发现硅质岩、浅变质玄武岩及砂板岩复理石建造;澜沧江构造带东侧发现大量火山岩;结晶基底中有大量变形变质古老花岗岩类。

The strata (besides the Quaternary strata) in the surveyed areas may be grouped into 116 lithostratigraphic units, 14 tectono-stratigraphic units and two ophiolitic tectonic mélanges units. The Niujingshan ophiolitic tectonic mélanges are considered to be correlated to the previous Tongchangjie mélanges as the remnant oceanic crust of the Palaeo-Tethys in western Yunnan. The Shigu ophiolitic tectonic mélanges are recognized in this work. The siliceous rocks, shallow metamorphic basalts and flysch formations of sandstones and slates are observed in several places along the Nujiang fault, and volcanic rocks on the eastern flank of the Lancangjiang fault. The deformational and metamorphosed granites occur on the crystalline basement.