关键词： 流纹英安斑岩；锆石U-Pb年龄；中志留世；东昆仑造山带 [gap=1558]Key words: rhyolite-dacite porphyry; zircon U-Pb dating; Middle Silurian; eastern Kunlun orogenic belt
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...，但其所指示的地质时代属丁早志留世中至晚 期（Middle--Late Llandoverian）无疑，绝对不是前 人所确定为中志留世（Wenlockian），但要识别m更 精确的地质时代，还应与其他各f J类化石进行综合 分析才能确定。 靠亲…
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中晚志留世 mid-late silurian
分析了该区中志留世的沉积环境及变化特征。
The sedimentary environment of Middle Silurian is also involved.
由缝合线向北，沙尔布尔提山安山岩线是中奥陶世至中、晚志留世发育起来的火山岛弧。
From the suture line towards the north, an andesite line along Sharburti Mountain was the volcanic island arc developed from middle Ordovician to middle-late Silurian.
由此本文认为麻扎-康西瓦-苏巴什结合带经历了震旦-早志留世的原特提斯洋的演化和中泥盆世-早三叠世的古特提斯洋的演化；
Therefore, this paper thought that Mazha-Kangxiwa-Subashi suture zone experienced Sinian to Early Silurian evolvement of Proto-Tethys and Devonian to Early Triassic evolution of the Palaeo-Tethys ;
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