第43卷第3期 2016年6月
doi: 10.12029/gc20160325
国地中
质
GEOLOGY INCHINA
Vol.43, No.3 Jun.，2016
江南，王永，闵隆瑞，等.内蒙古中部全新统沉积特征与地层划分(],2016,43(3)：1033-1040
Jiang Nan, Wang Yong, Min Longnui, et al. Sedimentary characteristics and divisioe of Holocene strata in central Inner Mongolia[1]. Geology in China, 2016, 43(3): 10331040(in Chinese with English abstract)
内蒙古中部全新统沉积特征与地层划分江南丨王永，闵隆瑞丨杨劲松’董进丨迟振卿丨姚培毅”
(1.中国地质科学院地质研究所，北京100037;2.中国地质科学院水文地质环境地质研究所,河北石家庄050061) 提要：文章对内蒙古中部辉锡勒湖相沉积剖面及好鲁库风成砂-古土壤剖面全新世地层的沉积特征及"C、OSL测年结果进行了综合论述，根据岩性特征及测年结果确定了全新统的底界。对内蒙古中部全新统沉积序列进行了系统分析，并将其划分为3段：全新统下部(开始于12.5~11.4ka，结束于8.2~7.0ka)辉腾锡勒为灰黑色黏土、粉砂质黏土，沉积特征指示由冲积相转变为湖相沉积，湖面开始上升；好鲁库沙丘主要为中粗砂，为风成砂堆积。全新统中部（开始于 8.2~7.0ka，结束于4.5~2.3ka)辉腾锡勒为灰褐色粉砂质黏土，富含有机质及双壳和螺类化石，为典型湖泊相发育阶段；好鲁库沙丘发育黑色砂质古土壤，气候温暖湿润。全新统上部(开始于4.5~2.3ka)辉腾锡勒为黏土质粉砂，含植物碎
屑，为湖滨相沉积，指示湖泊开始退缩；好鲁库沙丘为灰黄色中粗砂，沙丘重新活化，气候干早。关键词：内蒙古；全新统；沉积特征；地层划分
中图分类号：P534.63*2;P535
文献标志码：A
文章编号：10003657(2016)03-1033~08
Sedimentarycharacteristicsanddivisionof HolocenestrataincentralInner
Mongolia
JIANG Nan',WANG Yong',MIN Long-rui',
YANGJin-song,DONGJin',CHIZhen-qing,YAOPei-yi
(1. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China; 2. Institute of Hydrogeology and
Emvironmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 250013, Hebei, China)
Abstract: The Holocene strata of central Inner Mongolia were investigated using sedimentological features and "CIOSL dating data The authors present two Holocene profiles that illustrate different sediments from a sand dune in Haoluku, and a lake in Huitengxile. Holocene stratigraphic boundaries are defined by lithological indicators and dating results. The Holocene sequences can be divided into three units. In Huitengxile Lake, the beginning (11.4 ka) of the Holocene was associated with a lake level rise, which led to lithological succession from fluvial clastic sedimentation to lacustrine organic deposition. Sand dune was formed during this period(about 12.5 ka). During the middle Holocene, typical limnological facies (8.2 to 4.5 ka) appeared in Huitengxile Lake, and the
收稿日期：2015-12-31；改回日期：2016-04-12
基金项目：中国地质调查局项目（1212011120115，12120113005600)资助。
作者简介：江南，女，1989年生，颈士生，研究方向为第四纪地质与环境；E-mail:jiangn_2014@163.com。通讯作者：王水，男，1968年生，研究员，主要从事第四纪地质与新构造研究；E-mail:wangyongcags-ac.cn。
http://geochina.cgs.gov.cn 中国地质,2016, 43(3)