| 海原活动断裂的地壳脱气作用 |
| |
| 引用本文： | 姜大庸,陈文彬,石雅留.海原活动断裂的地壳脱气作用[J].西北地震学报,2000,22(4):447-451,464. |
| |
| 作者姓名： | 姜大庸 陈文彬 石雅留 |
| |
| 作者单位： | 中国地震局兰州地震研究所，甘肃兰州730000 |
| |
| 基金项目： | 地震科学联合基金资助项目!(95 0 7433)，国家重点室实验室——气体地球化学实验室资助项目!(95 0 1)，中国地震局兰州地震研究所!论 |
| |
| 摘 要： | 根据实验结果讨论了1920年海原8．5级大震发震断裂的气体构造地球化学作用。海原活动断裂带上的脱气以地壳脱气作用为主，脱气作用产物来源于上中地壳，脱气作用的弹度与断层应力状态运动特点密切相关。不同元素所反映的脱气深度范围及特征有所不同，氡对浅部断层活动及拉张区脱气作用较为灵敏，汞、氦能反映较深地壳内的脱气作用，氢的异常则与断层的逆中、推覆作用及断面上岩水作用密切相关。
|
| 关 键 词： | 活断层 地壳 脱气作用 气体同位素 氡 氦 氢 |
| 收稿时间： | 2000/1/10 0:00:00 |
THE CRUST DEGASIFICATION ALONG THE HAIYUAN ACTIVE FAULT |
| |
| JIANG Da-yong,CHEN Wen-bin and SHI Ya-liu.THE CRUST DEGASIFICATION ALONG THE HAIYUAN ACTIVE FAULT[J].Northwestern Seismological Journal,2000,22(4):447-451,464. |
| |
| Authors: | JIANG Da-yong CHEN Wen-bin and SHI Ya-liu |
| |
| Institution: | Lanzhou Institute of Seismology, CSB, Lanzhou 730000, China,Lanzhou Institute of Seismology, CSB, Lanzhou 730000, China and Lanzhou Institute of Seismology, CSB, Lanzhou 730000, China |
| |
| Abstract: | The structural aerogeochemistry process along the earthquake generating fault of the Haiyuan (MS8.5 earthquake) in 1920 is discussed based on the exprimental result.The degassing on the Haiyuan active fault is mainly crust degasification,in which the contents are mainly from middle upper crust.The degassing intensity is closely correlated to the fault stress state as well movement characteristics.The different degassed elements reflect different depth and characteristics.Radon reflects shallow depth and tension,mercury and Helium reflect relative deep depth,and hydrogen reflects obduction or nappe or rock water reaction on the fault surface. |
| |
| Keywords: | Active fault Crust Degasification Haiyuan fault |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《西北地震学报》浏览原始摘要信息 |
| 点击此处可从《西北地震学报》下载免费的PDF全文 |
|
