| A New Method to Identify Quaternary Moraine：Acoustic Emission Stress Measurement |
| |
| 作者姓名： | ZHAO Zhizhong QIAO Yansong TIAN Jiaorong WANG Min LI Mingze HE Peiyuan QIAN Fang |
| |
| 作者单位： | [1]Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081 [2]China University of Geosciences, Beijing 100083 [3]Lushan Administrative Bureau, Jiujiang, Jiangxi 332900 |
| |
| 基金项目： | Acknowledgements We thank Academician Sun Dianqing and deceased Professor Wu Xihao for their supports and helps. We also sincerely thank Prof. Zhao Xun for his suggestions. This research was supported by the Project of Chinese Geological Survey （Grants No. 200312300034） and the National Key Project - International Scientific Cooperation （Grants No. 2001CB711000） and the Lushan World Geopark. |
| |
| 摘 要： | How to effectively identify glacial sediments, especially Quaternary moraine, has been in dispute for decades. The traditional methods, e.g., sedimentary and geomorphologic ones, are facing challenge in eastern China where controversial moraine deposits are dominatingly distributed. Here, for the first time, we introduce the acoustic emission （AE） stress measurement, a kind of historical stress measurement, to identify Quaternary moraine. The results demonstrate that it can be employed to reconstruct stress information of glaciation remaining in gravels, and may shed light on the identification of Quaternary moraine in eastern China. First, we measured the AE stress of gravels of glacial origin that are underlying the Xidatan Glacier, eastern Kunlun Mountains in western China. Second, we calculated the stress according to the actual thickness of the glacier. The almost identical stress values suggest that the glacial gravels can memorize and preserve the overlying glacier-derived aplomb stress. And then we introduce this new approach to the controversial moraine in Mount Lushan, eastern China. The results indicate that the stress is attributed to the Quaternary glacier, and the muddy gravels in the controversial moraine in Mount Lushan are moraine deposits but not others.
|
| 关 键 词： | 地应力 冰碛 砂砾层 冰川作用 |
| 收稿时间： | 2005-03-31 |
| 修稿时间： | 2006-06-16 |
A New Method to Identify Quaternary Moraine:Acoustic Emission Stress Measurement |
| |
| Authors: | ZHAO Zhizhong QIAO Yansong TIAN Jiaorong WANG Min LI Mingze HE Peiyuan and QIAN Fang Institute of Geomechanics Chinese Academy of Geological Sciences Beijing China University of Geosciences Beijing Lushan Administrative Bure |
| |
| Abstract: | How to effectively identify glacial sediments,especially Quaternary moraine,has been in dispute for decades.The traditional methods,e.g.,sedimentary and geomorphologic ones,are facing challenge in eastern China where controversial moraine deposits are dominatingly distributed.Here,for the first time,we introduce the acoustic emission(AE)stress measurement,a kind of historical stress measurement,to identify Quaternary moraine.The results demonstrate that it can be employed to reconstruct stress information of glaciation remaining in gravels,and may shed light on the identification of Quaternary moraine in eastern China.First,we measured the AE stress of gravels of glacial origin that are underlying the Xidatan Glacier,eastern Kunlun Mountains in western China.Second,we calculated the stress according to the actual thickness of the glacier.The almost identical stress values suggest that the glacial gravels can memorize and preserve the overlying glacier-derived aplomb stress.And then we introduce this new approach to the controversial moraine in Mount Lushan,eastern China.The results indicate that the stress is attributed to the Quaternary glacier,and the muddy gravels in the controversial moraine in Mount Lushan are moraine deposits but not others. |
| |
| Keywords: | acoustic emission stress gravel moraine glaciation Quaternar |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《Acta Geologica Sinica》浏览原始摘要信息 |
| 点击此处可从《Acta Geologica Sinica》下载免费的PDF全文 |
|
