Anhydrous Melting and Crystallization of Granite from the Transition Zone of the Qilian Orogenic Belt, NW China: An Experimental Study at Atmospheric Pressure

Abstract

Granite from the transition zone of the Huang Yang Dam in the Qilian orogenic belt, NW China, is studied using a high-temperature furnace at atmospheric condition. Twenty-two runs are made to locate the liquidus temperature, the solidus temperature, and the melting interval of the granite of Huang Yang Dam, Gansu Province. The experimental temperatures range from 1010¢XC to 1297¢XC. The duration time is between thirty hours to sixteen days and two hours. Compositions of glass and phenocrysts are analyzed with an electron microprobe.