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“三江”地区哀牢山两类硅质岩的岩性组合、放射虫生态组合、稀土元素（ＲＥＥ）和硅同位素（δ３０Ｓｉ）特征表明，哀牢山晚泥盆世（Ｄ３）硅质岩属浊流成因，沉积于深海环境，证明扬子地台西缘在晚泥盆世（Ｄ３）时已裂开了一个深海槽；早石炭世（Ｃ１）硅质岩属哀牢山蛇绿岩的组成单元，形成于半深海环境，暗示哀牢山蛇绿岩代表的是一个相对封闭的小洋盆；海水深度、氧逸度条件、陆源物质及火山物质是影响哀牢山硅质岩稀土组成和硅同位素组成的因素。
The lithology combination of two types of siliceous rocks in Ailao Mountain in the “Sanjiang” area shows that the assemblages of radiolarian ecology, REE and δ30Si indicate that the Silurian The turbidity current was deposited in the deep sea environment and proved that the western margin of the Yangtze Platform had a deep trough split during the Late Devonian (D3). The Early Carboniferous (C1) chert is a member of the Ailaoshan ophiolite The unit, formed in the semi-deep sea environment, implies that the Ailaoshan ophiolite represents a relatively closed small oceanic basin; seawater depth, oxygen fugacity conditions, terrigenous matter and volcanic matter are the components that influence the RE composition and silicon Isotopic composition of the factors.