This paper discusses the feature of geology, lithogeochemical of this ophiolitic belt, so the ophiolite is produced from near the back-arc basin spreading ridge.

通过对该蛇绿岩带地质及岩石地球化学特征等进行了论述，认为其形成于近弧的弧后盆地扩张脊环境。

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Due to spreading of Helan and Qinling rift valleys during the Ordovician period, a L-shaped swell belt formed in the western and south - ern parts of the basin.

奥陶纪由于西边贺兰裂谷和南面秦岭裂谷发生扩张裂离，在盆地西缘和南缘产生裂谷肩翘升，形成l形隆起带。

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The deposit occurs in the rhyolite area of Miange Formation within the back_arc spreading basin and is controlled by a shearing belt.

该矿床产于弧后扩张盆地的勉戈组流纹岩中，受韧性剪切带控制。

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