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通过对阿尔金山北麓新疆若羌米兰河口剖面新近纪沉积序列的详细研究,结合区域资料,将该区地层由下至上划分为中新世乌恰群、晚中新世-早上新世的阿图什组、晚上新世西域砾岩组和早更新世乌苏群。根据岩性、沉积物粒度、沉积结构和构造以及地层几何形态特点,新近纪以来该区沉积环境经历了从中新世湖相沉积到晚中新世-早上新世扇三角洲沉积,再到晚上新世洪积扇沉积,最后至第四纪洪积扇和河流沉积的演化。结合剖面向上阶段性变粗、砾岩增多变厚、砾石成份中深变质岩和火成岩含量增加以及古水流也呈有规律变化等特征,可推测自新近纪以来阿尔金山至少经历了晚中新世-早上新世、晚上新世、早更新世和中更新世以来4个阶段的重大构造隆升过程,并且后3次构造活动幅度较前一次强烈。
Based on the detailed study of the Neogene sedimentary sequence of the Riojon Milano estuary profile in the northern foot of the Altun Mountains and the combination of regional data, the strata of the area are divided into Meso-Cenozoic Wuxia Group and Late Miocene-Early Pliocene from bottom to top Tuushu Formation, Late Pliocene Western Conglomerate Group and Early Pleistocene Wusu Group. According to lithology, sediment grain size, sedimentary structure and structure, and formation geometry, the sedimentary environment of the area underwent the deposition from the Miocene lacustrine sediments to the late Miocene-Early Pliocene fan delta since the Neogene, and then to the new at night Deposition of the Fai Fan, and the evolution of the alluvial fans and river sediments to Quaternary. The combination of upward stages of coalescence, thickening and conglomeration of conglomerates, increasing contents of deep metamorphic rocks and igneous rocks in the gravel composition, and regular changes of paleocurrent also suggest that the Altun Mountains experienced at least the Late Miocene since the Neogene. - Early Pliocene, Late Pliocene, Early Pleistocene and the Middle Pleistocene since 4 major structural uplift process, and the intensity of the last three tectonic activities than the previous strong.