n.硬砂巖

The sandstones of the Turpan Basin belong mostly to graywacke and their compositional and textural maturity are generally low,indicating a strong erosional and rapid transportational environment. 吐-哈盆地的砂巖主要屬雜砂巖類，總的結(jié)構(gòu)成熟度和成分成熟度均較低，形成于強烈剝蝕、快速搬運的沉積環(huán)境中。

Its basement is mainly composed of Paleozoic epimetamorphic rocks and the cover mostly consists of Cretaceous graywacke and organic shale formation,as well as Cenozoic loose elastic accumulations. 筆者通過對前人資料分析研究后認(rèn)為：松遼盆地具有良好的成礦地質(zhì)條件和找礦前景；

lithic graywacke 石質(zhì)雜砂巖

low rank graywacke 低級雜砂巖

feldspathic graywacke 長石雜砂巖,長石玄武土