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黑沟源于东天山最大现代冰川作用中心博格达峰的南坡.在第四纪冰期与间冰期旋回中,该流域的冰川均发生过多次规模较大的进退,在谷中留下了较为完整的冰川沉积序列.这些冰川地形包含有重要的古气候变化信息,对其研究可重建黑沟流域的冰川演化史.应用OSL对该流域的冰川沉积物进行定年,测定结果表明冰水沉积物(沙质透镜体)比冰碛物更适宜应用单片再生剂量(SAR)测年技术进行测定.基于测得的年龄并结合地貌地层学原理可初步得出:晚第四纪期间,黑沟流域共发生了5次规模较大的冰川作用,分别为全新世期间的小冰期(16世纪以来冷期的冰进)与新冰期(距今3~4 ka的冰进),末次冰期晚冰阶(MIS 2)与早冰阶(MIS 4)以及倒数第二次冰期(MIS 6).
Hei ditch originated from the southern slope of the Bogda peak, the largest modern glacier center in the East Tianshan Mountains. During the Quaternary and interglacial cycles, glaciers in the basin had experienced many large retreats and left behind in the valleys Relatively complete glacial sedimentary sequences.These glacial topographies contain important information on paleoclimate changes and they are used to study the evolution of the glaciers in the Hegou watershed.Using the OSL, the glacial sediments in this basin are time-sequenced, and the results show that ice-water deposits (Sandy lens body) is more suitable than the moraine to be measured by single chip regeneration dose (SAR) dating technique.Based on the measured age and the principle of geomorphology, it can be concluded that during the late Quaternary, black There are altogether 5 large-scale glaciations in the ditch basin. They are the Little Ice Age during the Holocene (ice-cold since the 16th century) and the Neo-Ice Age (3 ~ 4 ka ice into the valley), the last ice age Iced (MIS 2) and Early Ice (MIS 4), and the second-to-last Ice Age (MIS 6).