Rare Gas Isotopes Analysis Of Sichuan Huanglong Hot Spring

Experts paid attention to sichuan huanglong spring. This paper analyzes the huanglong hot spring geological structure background, water sources and spring types. Through springs rare gas isotope analysis, Chinese academy of sciences, institute of geology and geophysics lanzhou petroleum center VG5400 rare gas isotope mass spectrometry,find the huanglong spring helium is composed of mantle causes and crustal causes. And the following conclusions:1. This area belongs to the Paleozoic and Triassic strata, mainly in carbonate geological, structure is complex.Wangxiangtai fault is in south of ancient temples of huanglong and it is an important channels of groundwater.Groundwater rich in calcium hydrogen carbonate exposed in this area and become a group of spring by deep circulation, and become the source of calcium huanglong accumulation.2. Hydrochemistry characteristic differs from carbonated springs, salinity low, just 0.304 g/L for HCO3-Mg. Ca type water.3. Turned flower springs point 3He/4 He values in 10"7 magnitude, R=0.09 Ra,. 4He concentrations 120ppm, far bigger than LanShan air standard internationally, explain this area of helium is mostly shell source, Also can calculated approximately 3He concentration mantle causes LanShan air standard internationally recognized twice 3He values, that indicates mantle-derived ingredients to join us.20Ne concentration is about LanShan air standard value 20Ne concentration of internationally recognized one-third.4. The flower-spinning pool of crust-derived helium ratio is about 0.75%, namely crust-derived CO2 ratio is about 0.75%.