Distribution of Narrow-Width Magnetic Anomalies in Antarctica
Distribution of Narrow-Width Magnetic Anomalies in Antarctica
复制标题
南极洲窄幅磁异常分布
作者：
J. Behrendt
1963年至1964年南极夏季获得的航磁剖面数据与早期的结果一起用于绘制窄幅磁异常的面积分布图。许多异常与南极洲西部已知的火山有关。大面积几乎没有异常可能是由于在埃尔斯沃思山脉观测到的厚的变质沉积层的延伸。横贯南极山脉的部分地区有相关的异常，这些异常可能是由晚新生代火山岩引起的。
Data for aeromagnetic profiles obtained in Antarctica during the 1963-64 austral summer were used together with earlier results to construct a map showing the areal distribution of narrow-width magnetic anomalies. Numerous anomalies are associated with known volcanic mountains in western Antarctica. A large area of few anomalies is probably a result of an extension of the thick metasedimentary section observed in the Ellsworth Mountains. Portions of the Trans-Antarctic Mountains have associated anomalies which are probably caused by late Cenozoic volcanic rocks.