河套地区全新世黄河古河道的分布及期次划分

周青硕; 张绪教; 叶培盛; 何泽新; 蔡茂堂; 刘晓彤; 李成路; 吴泽群

河套地区全新世黄河古河道的分布及期次划分

1.
中国地质科学院地质力学研究所, 北京 100081
2.
中国地质大学地球科学与资源学院, 北京 100083
3.
北京矿产地质研究院, 北京 100012

基金项目:

中国地质调查局地质调查项目 DD20160060

中国地质调查局项目内蒙古1：5万呼勒斯太苏木（K48E017024）等四幅填图试点 12120114042101

详细信息

作者简介:
周青硕(1989-), 男, 硕士研究生, 主研究方向第四纪地质环境。E-mail:2225648403@qq.com

通讯作者:
张绪教(1964-), 男, 博士, 副教授, 主要从事第四纪地质、新构造运动的教学及科研。E-mail:zhangxj@cugb.edu.cn

中图分类号: P66
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- 被引次数: 0
出版历程
- 收稿日期: 2016-10-02
- 刊出日期: 2017-06-28

THE DISTRIBUTION AND PERIOD DIVISION OF HOLOCENE PALAEO CHANNELS OF THE YELLOW RIVER IN HETAO AREA

1.
Institute of geology, Chinese Academy of Geological Sciences, Beijing 100081, China
2.
School of Earth Sciences and resources, China University of Geosciences, Beijing 100083, China
3.
Beijing Institute of Geology and mineral resources, Beijing 100012, China

摘要

摘要: 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 kaB.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 kaB.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 kaB.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。
- 河套地区 /
- 黄河古河道 /
- OSL测年 /
- ¹⁴C测年 /
- 全新世(Qh)
Abstract: The distribution of palaeo channels of the Yellow River and the establishment of Chronological framework are of great significance to explore the rule of the Yellow River migration and reconstruct the history of palaeoclimate. Based on the Remote Sensing Image solution translation of Landsat 8 and the analysis of 1:50000 field geological and geomorphical survey and the drill data, combined with the measured profile, it is basically determined that there is the distribution of palaeo channels buried under the Modern Yellow River in Hetao Plain from the south of Seertang mountains to the north of modern Yellow River.In the meantime, using OSL and ¹⁴C dating, the age of the palaeo channels of the Yellow River are accurately determined.According to the results of chronology research, the palaeo channels of the Yellow River in Holocene are divided into three phases:Phase I, the palaeo channels were formed by north branch which spread in the northwest of Fuxing Town with the burial depth of 2~6 m and south branch which spread in the south central of Hulesitai with the burial depth of 8.2~9 m, and the age is 9.93~7.4 kaB.P; Phase Ⅱ, the principle parts of the palaeo channels mainly spread in front of the Seertang mountains, with the direction of NW-SE, buried at 4~11 m of the bottom of the palaeo channels of the Ugab River with the widest part of 1.5 km in NS direction. There were palaeo channels of the same phase in Taal Lake Areawith the burial depth of 7~9 m and its age is 7.4~4.1 ka B.P; Phase Ⅲ, the palaeo channels in the central Hulesitai, the south central of Taal Lake and the south of Fuxing once all developed, but the main bodies were the palaeo channels in Taal Lake Area, with the burial depth of 2~9 m, and the age is 4.1~1.2 ka B.P. The identification of distribution and ages of the palaeo channels of the Yellow River helps to study the evolution history of the Yellow River in Hetao Area and provides reference for water conservancy construction and agricultural production in Hetao Area.
- Hetao Area /
- palaeo channel of the Yellow River /
- OSL dating /
- ¹⁴C dating /
- Holocene (Qh)

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图 1 研究区概况图

Figure 1. Sketch map of the study area

下载: 全尺寸图片幻灯片

图 2 钻孔中古河道砂层

Figure 2. The sand layer of the paleochannel in drill hole

下载: 全尺寸图片幻灯片

图 3 landsat8假彩色影像图(6、5、4波段)

Figure 3. Landsat8 false color image map (6、5、4 band)

下载: 全尺寸图片幻灯片

图 4 全新世浅埋古河道联合剖面图

Figure 4. Joint profile of the shallow buried palaeochannel in the Holocene

下载: 全尺寸图片幻灯片

图 5 古河道钻孔岩芯对比图

Figure 5. Contrast diagram of the drill core in the paleochannel

下载: 全尺寸图片幻灯片

表 1 光释光年龄结果表

Table 1. The age of light release

原始编号	埋藏深度(cm)	含水率(%)	U(ppm)	Th(ppm)	K(%)	剂量率(Gy/ka)	等效剂量(Gy)	年龄(ka)
CJZ-HL-4A-12A	480~490	23±5	2.35±0.02	10.36±0.10	1.58±0.04	2.48±0.08	7.34±0.91	2.96±0.38
CJZ-HL-4A	877~900	21±5	1.08±0.01	5.54±0.03	1.56±0.02	1.94±0.07	15.62±1.12	8.05±0.65
CJZ-TEH-2A-9A	435~440	24±5	1.64±0.02	8.09±0.04	1.50±0.01	2.13±0.07	3.65±0.08	1.71±0.07
CJZ-TEH-2A	860~880	19±5	1.13±0.02	5.37±0.03	1.45±0.05	1.88±0.07	4.89±0.14	2.59±0.12
CJZ-FX-5A-12B	400~410	21±5	1.55±0.03	7.85±0.05	1.65±0.01	2.67±0.14	26.38±1.28	9.89±0.70
CJZ-FX-5A	560~568	20±5	1.16±0.01	5.94±0.05	1.54±0.01	2.00±0.08	19.88±1.46	9.93±0.82

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表 2 ¹⁴C年龄结果表

Table 2. ¹⁴C ages

原始编号	埋藏深度(cm)	年龄(ka)	备注
CJZ-HL-2B-21	770~775	4.260±30
CJZ-HL-2B-25	988~1000	4.640±30

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