Study on fluid-rock equilibrium systems of Fuping gneiss complex, Taihang Mountains

The characters of fluid compositions and fluid-rock equilibrium system of the Archean Fuping gneiss complex, Taihang Mountains are first determined by fluid-rock equilibrium thermodynamics calculations and microthermometry of fluid inclusions. These investigations suggest that the X(H₂0) is generally less than 0.05 in fluids equilibrating with the granulite facies metamorphic mineral assemblage of Fuping gneiss complex, and fluid-rock interaction is chiefly controlled by C0₂-rich fluid infiltration. Project supported by thc National Natural Science Foundation of China.