This spring is the exposed ground- water permeated and converged in the cracks of the Jurassic lava under the long-term geotherm and mineraliz- ation.

• 金江沟温泉为地下水渗透汇聚于断裂裂隙内，经长期地热作用与矿化作用，因压力差的作用在有利部位出露地表形成矿泉。