Petrographic and geochemical characteristics of low-pressure granulite-facies gneisses from the western awulale mountains ( in the western tianshan mountains ) indicate that the protolith was a graywacke , which is featured by proximity of its origin and rapid deposition .

岩相学和岩石地球化学特征表明，西天山阿吾拉勒西段低压麻粒岩相片麻岩的原岩为杂砂岩，具有近源、快速沉积的特点。