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出峨眉县城,过马路桥,沿山麓田野间的公路,过龙门洞就进入氡泉所在地——黑水河与白水河交汇的两河口。泉水从第四系冲积层中呈股状涌出,常年在30℃左右。水中矿物质的含量不多,每升水不过半克,然而水中氡气含量却异常,每升水含氡量近50埃曼。在矿泉分类上,它属低矿化度的氡泉。所谓氡,原来是放射性元素(镭—226)自然衰变过程中的脱变物(氡222)。从地质上讲,峨眉山山麓两河口氡泉,是一个断层泉。西北走向长8公里的断裂带,从地表向地下延伸到二叠系的玄武岩与石灰岩的不整合面上。这两种
Out of Emei county, cross the road and bridge, along the foothills of the road between the fields, over the Longmen hole into the radon spring seat - the intersection of the Black River and Baishuihe Lianghekou. Spring water from the Quaternary alluvial layer was gushing, all year round at about 30 ℃. The mineral content of water is small, but not more than half a gram per liter of water, but the water radon content is anomalous, the amount of radon per liter of water is nearly 50 Aman. In mineral classification, it is a low-salinity radon spring. The so-called radon, turned out to be radioactive elements (radium-226) during the natural decay degeneration (radon 222). Geologically speaking, Emeishan Foothills Radon Spring, is a fault spring. The fault belt extending 8km long in the northwest extends from the surface to the lower part of the Permian basaltic and limestone unconformities. These two