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黄河古河道的分布及其年代学框架的建立对于探讨黄河迁移规律、重建古气候演化历史具有重要意义。通过Landsat8遥感影像解译、1∶5万野外地质地貌调查、钻孔资料分析,结合剖面实测基本判定了色尔腾山以南至现代黄河以北河套平原区黄河埋藏古河道的分布,,采用OSL与14C测年较精确地确定了黄河古河道的年代。依据年代学研究结果,将全新世黄河古河道划分为三期:Ⅰ期古河道,分南北两支,南支分布在复兴镇西北部,埋深2~6 m,北支分布于呼勒斯太中南部,埋深8.2~9 m,时代为9.93~7.4 ka B.P.;Ⅱ期古河道,河道主体分布在色尔腾山山前,呈北西─南东向,埋藏于现今乌加河古河道下部4~11m处,南北最宽处约1.5km。塔尔湖区存在同一期的古河道,埋深7~9 m,以东西向展布为主,时代为7.4~4.1 ka B.P.;Ⅲ期古河道,呼勒斯太中部、塔尔湖中南部及复兴南部都曾发育,但河道主体为塔尔湖区的古河道,埋深2~9 m,时代为4.1~1.2 ka B.P.。黄河古河道分布及时代确定有助于更深入地研究黄河在河套段演化历史,为河套地区的水利建设和农业生产提供参考和借鉴。
The distribution of the Yellow River ancient pavement and its chronological framework for the study of the migration of the Yellow River, the reconstruction of paleoclimate evolution history is of great significance. Through Landsat8 remote sensing image interpretation, 1: 50000 geology and geomorphology survey, borehole data analysis, combined with cross-section measurements basically determine the distribution of the ancient river courses buried in the Yellow River in the Hetao Plain to the south of the Yellow River to the south of the Yellow River, OSL and 14C dating more accurately determine the age of the Yellow River. According to the chronological study, the ancient river of the Yellow River is divided into three stages: the first stage ancient river, divided into two parts of north and south, south branch located in northwestern Fuxing town, buried depth of 2 ~ 6 m, In the central-southern South China, the buried depth ranged from 8.2 to 9 m, and the age ranged from 9.93 to 7.4 ka BP. In the second stage, the ancient river courses were distributed in front of the Serteng Mountains, The lower part of 4 ~ 11m, the widest point of about 1.5km. There are ancient river courses in the same period in the Tar Lake area, with buried depths ranging from 7 to 9 m, mainly distributed in the east and west. The ages range from 7.4 to 4.1 ka BP. The ancient river courses in the third phase, the central part of the Huluosidai area, the south-central part of the Taal Lake and The southern area of Renaissance developed. However, the main channel of the river was an ancient river in the Ta’er Lake area with a depth of 2 ~ 9 m and an age of 4.1 ~ 1.2 ka BP. The distribution of Yellow River ancient palaces and the determination of the times will help to further study the evolution history of the Yellow River in the Loop and provide references for water conservancy construction and agricultural production in Hetao.