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| 1 | 晚第四纪“吉兰泰-河套”古大湖的初步研究显示文摘通过野外考察、探坑剖面观测和遥感影像分析,发现吉兰泰盐湖周围存在高湖面遗留的地貌、沉积和生物证据.在海拔1060,1050,1044和1035m共有4道古湖岸堤,分别高出现代盐湖37,27,21和12m.在海拔1070-1080m之间(高出现代盐湖47-57m)存在古湖滨砂砾石沉积,若干地点保存有古湖岸堤形态;在乌兰布和沙漠腹地的贺日木西尼也发现1080m高程及其以下的湖滨砂砾石和典型湖相沉积,以及从海拔1050-1035m,长11km的典型砂嘴.河套黄河南岸黄河水文站砂场、什拉召砂场也发现古湖岸堤,杭锦旗巴拉贡砂场发现发育在冲洪积砂砾石层上的湖滨砾石沉积.沿狼山-阴山南麓若干剖面点发现湖岸侵蚀台地及湖滩岩和湖滨相沉积.在黄河进入河套的乌海附近发现水下三角洲沉积,黄河出口的托克托台地存在典型湖相沉积.在湖滨沉积物中,普遍保存有蓝蚬、萝卜螺和扁卷螺等水生软体动物壳体,部分湖相细粒沉积物中也可见到介形虫壳体.出露较好的湖相沉积剖面具有典型的进积型垂向层序,较高湖岸堤普遍保存有湖滩岩.这些证据说明,曾存在一个覆盖吉兰泰和河套平原大部分地区的巨大古湖,湖面海拔可达1080m,建议称作“吉兰泰-河套”古大湖.光释光测年结果表明,该古大湖存在于距今5-6万年前.海拔1060-1035m间的4道湖岸堤代表了5-6万年到全新世早期间的湖面波动,而真正吉兰泰盐湖状态仅形成于距今5500年以来.“吉兰泰-河套”古大湖的发现,对进一步深入研究河套地区晚第四纪黄河发育、乌兰布和-库布齐沙漠的形成演化以及区域气候变化和新构造运动都具有重要意义. | 陈发虎 范育新 春喜 D.B.Madsen C.G.Oviatt 赵晖 杨丽萍 孙洋 | 2008 | 科学通报2008，53，10： | 66 |
| 2 | A mid-Holocene drought interval as evidenced by lake desiccation in the Alashan Plateau,Inner Mongolia,China显示文摘The mid-Holocene in China is traditionally thought to be a warm and humid period with a strong summer monsoon, and is often termed the Holocene Climatic Optimum or Megathermal Period. Here we present lake geomorphologic and lithological evidence from the Alashan Plateau, part of the Mongolian Plateau, that indicates strong lake desiccation during the mid-Holocene. High resolution pollen data from Zhuyeze Lake, at the present summer monsoon margin, is also presented. These data show that present lakes and wetlands in the Juyanze Lake basin west of the Badain Jaran desert, in the Zhuyeze Lake basin between the Badain Jaran and Tengger deserts, and in lakes in the eastern Tengger desert, dried or experienced low lake levels in the mid-Holocene around 5000—7000 cal yr BP. Pollen data further indicate that the vegetation cover declined in both the local areas and in the Qilian Mountains, suggesting the climate was drier than that associated with the present Asian summer monsoon. This mid-Holocene drought interval was present throughout a quite large region of the south Inner Mongolian Plateau. The period was also probably colder, at least in the high Asian plateaus and mountains. | CHENFahu WUWei J.A.Holmes D.B.Madsen ZHUYan JINMin C.G.Oviatt | 2003 | Chinese Science Bulletin2003，48，14： | 66 |
| 3 | 阿拉善高原中全新世干旱事件的湖泊记录研究显示文摘中国国内普遍流行的观点认为,中国中全新世是一个夏季风盛行的温暖湿润时期,称作全新世“最宜期”或“大暖期”.内蒙古西部阿拉善高原的湖泊沉积和湖泊地貌则显示了一种相反的状况,这一区域中全新世气候干旱,黑河的终闾湖泊居延泽、石羊河的终闾湖泊潴野泽和腾格里沙漠东缘的头道湖均经历了湖泊缩小或干涸过程,时代为距今7000-5000日历年.潴野泽高分辨率(50年)的孢粉记录显示,季风边缘区的石羊河流域,特别是祁连山地的植被发生显著衰退,降水减少.中全新世的干旱事件存在于现代夏季风边缘区的较大范围,包括阿拉善高原、鄂尔多斯高原、内蒙古高原中东部,甚至黄土高原南部,指示了东亚夏季风在全新世期间的一次大衰退.中全新世东亚夏季风衰退期间气候寒冷,这在青藏高原及其周边山地尤为明显. | 陈发虎 吴薇 朱艳 J.A.Holmes D.B.Madsen 金明 C.G.Oviatt | 2004 | 科学通报2004，49，1： | 72 |
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