Formed by passive emplacent of crust-mantle mixed type of magma and controlled by nearly NS-trending Baodu-Boluo arcuate fault zone, the Himalayan porphyry belt in Ninglang area tends generally to plunge northward.

• 摘要宁蒗地区喜山期斑岩带受近南北向的包都－波罗弧形断裂带控制，由壳幔混源型岩浆被动侵位而成，总体上呈向北逐渐倾伏的趋势。