北京西山古山洪堆积--马兰砾石形成环境及年代

卢演俦; 魏兰英; 尹金辉; 尹功明; 赵华

北京西山古山洪堆积--马兰砾石形成环境及年代

- ①中国地震局地质研究所,中国地震局新构造年代学开放实验室,北京 100029;
- ②中国科学院地球环境研究所黄土与第四纪地质国家重点实验室,西安 710075;
- ③中国科学院地质与地球物理研究所,北京 100029;
- ④中国地质科学院水文地质环境地质研究所,石家庄 050061

详细信息

作者简介:
卢演俦男 63岁研究员第四纪地质学与新构造学专业 E-mail:ych.lu@263.net

收稿日期: 2003-08-14

修回日期: 2003-08-29

刊出日期: 2003-12-25

DATES AND ENVIRONMENTS OF THE MALAN GRAVEL FORMATION AS THE TORRENT DEBRIS DEPOSITS ALONG QINGSHUI RIVER IN WESTERN HILLS, BEIJING

- ①Institute of Geology, China Seismological Bureau;
- ①Laboratory of Neotectonic Chronology, Institute of Geology, China Seismological Bureau, Beijing 100029;
- ②State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences| Xi′an 710075;
- ③Institute of Geology and Geophysics,Chinese Academy of Sciences, Beijing 100029;

Received Date: 14 August 2003

Revised Date: 29 August 2003

Publish Date: 25 December 2003

摘要

摘要: 在北京西山永定河支流清水河流域构成马兰台、燕家台、梁家台和青龙涧小台等台地的砾石堆积物可称之为马兰砾石.其岩性、岩相、地形和地貌等方面都不同程度地显示出山洪泥石流沉积的特征.释光和14C测年结果表明,马兰砾石形成于约30kaB.P.至约13kaB.P.,覆盖在马兰砾石之上的全新世复合古土壤发育于约8kaB.P.至约2.5kaB.P..马兰砾石上部及上覆古土壤的植物硅酸体组合反映,马兰砾石堆积时期研究区可能发育着以藜科、蒿属等草本植物为主的干旱-半干旱草原植被;而全新世古土壤发育时期出现了森林或草原-森林植被.马兰台、燕家台、梁家台和青龙涧小台等台地应是末次冰期盛冰阶冰缘气候环境中暴雨山洪事件的稀性泥石流产物.
- 马兰砾石年代 /
- 冰缘环境 /
- 古山洪泥石流堆积 /
- 全新世古土壤与环境
Abstract: There are a series of the tablelands of marked relief, such as Malan tableland, Yanjia tableland, Liangjia tableland and Qinglongjianxiao tableland, in the reach of Qingshui River. These tablelands, located at tributary mouths joined Qingshui River, have been mainly composed of the gravel accumulates which are referred as the Malan gravel formation in this paper. According to the statistic data of the lithographic properties, deposition structures and topographic relief, the Malan gravel formation can be recognized as the rapid deposits transported by sub-viscous debris flow in high energy circumstance when torrent events occurred in the tributaries of Qingshui River.
- age of the Malan gravel /
- periglacial environment /
- paleao-torrent debris flow /
- Holocene polygenetic soils and environment

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参考文献(13)

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北京西山古山洪堆积--马兰砾石形成环境及年代

作者简介: 卢演俦 男 63岁 研究员 第四纪地质学与新构造学专业 E-mail:ych.lu@263.net

DATES AND ENVIRONMENTS OF THE MALAN GRAVEL FORMATION AS THE TORRENT DEBRIS DEPOSITS ALONG QINGSHUI RIVER IN WESTERN HILLS, BEIJING

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作者简介:
卢演俦男 63岁研究员第四纪地质学与新构造学专业 E-mail:ych.lu@263.net