It is inferred from the thermometry of geyserite and adarce inclusions that underground temperatures for the hot spring system in Tengchong are .

云南腾外著名的地热区，区内火山岩浆地热动强烈，水热显示形式多样，有温、热、、水热蚀变岩石、华（硅华、盐华、钙华和硫华）等。