| 大兴安岭地区的强磁性火山岩 |
| |
| 引用本文： | 侯重初.大兴安岭地区的强磁性火山岩[J].地球物理学报,1960,9(2):144-148. |
| |
| 作者姓名： | 侯重初 |
| |
| 作者单位： | 地质部航空磁测大队 |
| |
| 摘 要： | 在大小兴安岭进行航空磁测结果,得到了一副广泛分布着强度很大的杂乱磁场变化图景,经过对许多异常进行地面检查证实,它们都是由强磁性火山岩引起的,包括玄武岩、安山岩、流纹斑岩、粗面流纹岩等.在100米左右的飞行高度上磁异常强度最高可达5000γ,一般都有3000-4000γ,地面最大强度经常都在10000γ以上（丝悬式磁秤超格）.
|
| 关 键 词： | 大兴安岭地区 火山岩 玄武岩浆 强磁性 剩余磁化 磁异常 航空磁测 大小兴安岭 安山岩 负异常 |
ON THE MAGNETIC PROPERTY OF VOLCANIC ROCKS OCCURRING IN THE GREAT SHINGAN MOUNTAIN REGION,NORTHEAST CHINA |
| |
| HOU ZONG-TSU.ON THE MAGNETIC PROPERTY OF VOLCANIC ROCKS OCCURRING IN THE GREAT SHINGAN MOUNTAIN REGION,NORTHEAST CHINA[J].Chinese Journal of Geophysics,1960,9(2):144-148. |
| |
| Authors: | HOU ZONG-TSU |
| |
| Institution: | Aro-magnetic Survey Expedition,Ministry of Geology |
| |
| Abstract: | As the result of an aro-magnetic survey in the Great Shingan region of northeast China,a large number of intensive magnetic anomalies have been found.Observations on the ground sur- face show that they are caused by the strong magnetic behavior of rock materials of volcanic origin, exposed or lying beneath the surface.Their residual magnetism is particularly strong and often oppositely directed to the earth magnetic field,giving rise to intensive negative magnetic ano- malies.On the other hand,the inductive magnetism of the rocks is found to be much weaker. Chemical analysis and mineralogical investigations indicate that these rocks are composed of chiefly oxides of silica and aluminium,ferromagnetic minerals are very rare. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地球物理学报》浏览原始摘要信息 |
| 点击此处可从《地球物理学报》下载免费的PDF全文 |
|
