| 阿尔金断裂带东段晚更新世阶地沉积物红外释光测年及其构造意义 |
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| 引用本文： | 王萍,卢演俦,陈杰.阿尔金断裂带东段晚更新世阶地沉积物红外释光测年及其构造意义[J].地震地质,2004,26(4):716-726. |
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| 作者姓名： | 王萍 卢演俦 陈杰 |
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| 作者单位： | 中国地震局地质研究所,地震动力学国家重点实验室,北京,100029;中国地震局地质研究所,地震动力学国家重点实验室,北京,100029;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 |
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| 基金项目： | 国家自然科学基金(40072058)，地震科学联合重点基金(201018)共同资助。 |
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| 摘 要： | 对流经阿尔金断裂带东段的段家沙河、疏勒河和踏实河的阶地沉积物进行了细颗粒多测片红外释光(IRSL)测年,初步确定了晚第四纪各级阶地的形成年代和构造抬升速率。疏勒河在昌马盆地南缘发育7级阶地,光释光测年结果显示这些总高度超过100m的阶地可能主要形成于数万年以内,抬升速率约为2.5mm/a;照壁山峡谷疏勒河保留有5级阶地,大致形成于20万年前,阶地的抬升速率约为0.7mm/a;段家沙河在红柳峡上形成4级阶地,形成于距今7万年以来,其抬升速率约为06mm/a
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| 关 键 词： | 阿尔金断裂带东段 红外释光测年 阶地 抬升速率 |
| 文章编号： | 0253-4967(2004)04-0716-11 |
| 收稿时间： | 10 August 2003 |
| 修稿时间： | 2003年8月11日 |
OPTICAL STIMULATED LUMINESCENCE (OSL) DATING OF LATE PLEISTOCENE TERRACE DEPOSITS IN THE EASTERN SEGMENT OF THE ALTYN TAGH FAULT AND ITS TECTONIC IMPLICATION |
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| WANG Ping,LU Yan-chou,CHEN Jie.OPTICAL STIMULATED LUMINESCENCE (OSL) DATING OF LATE PLEISTOCENE TERRACE DEPOSITS IN THE EASTERN SEGMENT OF THE ALTYN TAGH FAULT AND ITS TECTONIC IMPLICATION[J].Seismology and Geology,2004,26(4):716-726. |
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| Authors: | WANG Ping LU Yan-chou CHEN Jie |
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| Institution: | 1. State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China;2. State Key Laboratory of Loess and Quaternary Geology & Institute of Earth Environment, Chinese Academy of Science, Xi'an 710075, China |
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| Abstract: | The ages of terrace deposits along the Shulehe River system are determined by the use of Optical Stimulated Luminescence (OSL) dating technique. The possible tectonic implications of the obtained age data are discussed as follows: (1) The Duanjiagou, Shulehe, and Tashihe Rivers are three rivers of different characters from the Shulehe River system. Several levels of terraces of different altitudes and corrosion rates were developed in the intermont basin and mountain front on the eastern segment of the Alty |
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| Keywords: | eastern Altyn Tagh Fault Optical Stimulated Luminescence (OSL) dating terrace rate of uplift |
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