| 河流沉积分析在浅覆盖第四纪填图中的应用——以内蒙古河套地区1:50000填图试点为例 |
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| 引用本文： | 刘晓彤,张绪教,叶培盛,贾丽云,蔡茂堂,何泽新,李成路,吴泽群,周青硕.河流沉积分析在浅覆盖第四纪填图中的应用——以内蒙古河套地区1:50000填图试点为例[J].地质力学学报,2016,22(4):868-881. |
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| 作者姓名： | 刘晓彤 张绪教 叶培盛 贾丽云 蔡茂堂 何泽新 李成路 吴泽群 周青硕 |
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| 作者单位： | 中国地质大学地球科学与资源学院, 北京 100083;中国地质科学院地质力学研究所, 北京 100081;中国地质大学地球科学与资源学院, 北京 100083;中国地质科学院地质力学研究所, 北京 100081;中国地质科学院地质力学研究所, 北京 100081;中国地质科学院地质力学研究所, 北京 100081;中国地质大学地球科学与资源学院, 北京 100083;中国地质大学地球科学与资源学院, 北京 100083;中国地质科学院地质力学研究所, 北京 100081;中国地质大学地球科学与资源学院, 北京 100083;中国地质科学院地质力学研究所, 北京 100081;中国地质大学地球科学与资源学院, 北京 100083;中国地质科学院地质力学研究所, 北京 100081 |
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| 基金项目： | 中国地质调查局地质调查项目“特殊地质地貌区填图试点”（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） |
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| 摘 要： | 随着国家大比例尺地质调查(1∶50000)向特殊地质地貌区的开展,已有第四纪填图方法已不能满足覆盖区填图的实际需求,地质工作者面临着第四纪大比例尺填图"填什么、如何填"的问题。选取典型覆盖区——河套平原为研究区,以河流沉积理论为指导,通过钻孔揭露方法,建立了全新世以来的河流沉积体系,并以此作为区域地质图骨架,提出了河道亚相、堤坝亚相、泛滥平原亚相的填图单元,应用"逐步逼近原则"确定地质界线,划分出区内三期河道及其相应的沉积体系,解决了覆盖区第四纪地质调查中填图单元稀少,地质图表达单调的问题,为覆盖区第四纪地质调查提供了一套可行方案。
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| 关 键 词： | 覆盖区 填图方法 河流系统 沉积相分析 河套平原 |
| 收稿时间： | 2016/9/15 0:00:00 |
APPLICATION OF FLUVIAL DEPOSITIONAL SYSTEM ANALYSIS DURING THE QUATERNARY GEOLOGICAL SURVEY IN THE SHALLOW COVERED AREA: A CASE STUDY OF 1: 50000 GEOLOGICAL MAPPING IN THE HETAO REGION OF INNER MONGOLIA |
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| LIU Xiao-tong,ZHANG Xu-jiao,YE Pei-sheng,JIA Li-yun,CAI Mao-tang,HE Ze-xin,LI Cheng-lu,WU Ze-qun and ZHOU Qing-shuo.APPLICATION OF FLUVIAL DEPOSITIONAL SYSTEM ANALYSIS DURING THE QUATERNARY GEOLOGICAL SURVEY IN THE SHALLOW COVERED AREA: A CASE STUDY OF 1: 50000 GEOLOGICAL MAPPING IN THE HETAO REGION OF INNER MONGOLIA[J].Journal of Geomechanics,2016,22(4):868-881. |
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| Authors: | LIU Xiao-tong ZHANG Xu-jiao YE Pei-sheng JIA Li-yun CAI Mao-tang HE Ze-xin LI Cheng-lu WU Ze-qun and ZHOU Qing-shuo |
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| Institution: | School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China;School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China;Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China;Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China;School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China;School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China;School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China |
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| Abstract: | With the conduction of the national large-scale (1:50000) geological survey in special geological and geomorphic areas, traditional Quaternary mapping methods could not meet the needs of modern geological mapping in the coverage areas. Therefore, "What can we do" and "How can we do" become the key issues for the geological workers during the Quaternary geological mapping. In order to test even find some new geological mapping methods, we select typical coverage area-Hetao plain as our study area. Under the guidance of theories in fluvial sedimentlogy, combined with drilling column, we build the fluvial sedimentary system since the Holocene. Regard these subfacies as the sedimentary frame for the geological sketch frame, we recognize fluvial subfacies, embankments subfacies, and flood plain subfacies. The principle of step by step approximation was applied to determine the geological boundary. Besides that, three periods of fluvial deposits and corresponding sedimentary systems were recognized. Therefore, the problem of lacking geological units during the Quaternary geological survey in covered area might be solved, and a set of feasible scheme could be provided. |
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| Keywords: | shallow covered area mapping methods fluvial system sedimentary facies analyzation Hetao plain |
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