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在哀牢山构造带的哀牢山断裂与花山-雅邑断裂之间出露大量不同构造环境的岩浆岩。除双沟蛇绿岩外,尚发现有景东火山岩和墨江火山岩。地球化学研究表明,景东火山岩具有类似于富集型洋中脊玄武岩(P-MORB)地球化学特征,形成于以双沟蛇绿岩为代表的哀牢山洋盆先期的陆内裂谷构造环境;墨江火山岩具有岛弧火山岩地球化学特征,形成于哀牢山洋盆向西俯冲消减作用下的岛弧构造环境。景东裂谷型火山岩和墨江岛弧火山岩分别代表了哀牢山洋盆形成演化过程的两个端员阶段岩浆活动,反映了沿哀牢山构造带存在从初始裂谷扩张、形成洋盆、后期洋壳俯冲消减、碰撞造山的完整板块构造演化过程。
There are a large number of magmatic rocks with different tectonic settings between the Ailaoshan fault and the Huashan-Ya-Yi fault in the Ailaoshan structural belt. In addition to Shuangogou ophiolite, there are still found in Jingdong volcanic rocks and Mojiang volcanic rocks. Geochemical studies show that the Jingdong volcanic rocks have geochemical characteristics similar to those of the enriched mid-oceanic basalts (P-MORB) and are formed in the pre-Inland rift structure of the Alamoshan Ocean basin represented by Shuangogou ophiolite Environment. The Mojiang volcanic rock has the geochemical characteristics of island arc volcanic rocks and was formed in the island arc tectonic environment under the subduction of the western Ailao Peninsula. The Jingdong rift-type volcanic rocks and the Mengjiang arc-shaped volcanic rocks represent the two end-member stages of magmatism in the formation and evolution of the ocean basin of Ailaoshan respectively, reflecting the existence of structural zones along the Ailaoshan extension from the initial rifting to the formation of oceanic basins, Subduction of the late oceanic crust subduction, collision orogeny complete tectonic evolution.