对二十八公里地区磁异常的电算处理及初步效果

• 作 者: 奚家鉴
• 机 构: 黑龙江地质局物探队,
• 出 处: 物化探电子计算技术
• 发表日期: 1980年04期
• 关键词: 磁异常 初步效果 磁测 弱磁性 矿体 闪长岩 物探 八年 第四系 接触带

二十八公里地区磁异常是物探队于六八年进行万分之一地面磁测工作时发现的。异常为等轴状,长、宽各约2000米,走向略呈北面,异常梯度很小,曲线较园滑,Za 最大值为1050γ,基本上无负值伴生(图1)。异常位于接触带上,区内地形平坦,被第四系浮土广泛复盖,仅东北角一小山包上见闪长岩出露,呈弱磁性,是区内唯一的干扰因素。

The magnetic anomalies in the 28 km area were discovered by geophysical teams on the one-tenth of a thousandth of the earth’s surface magnetic surveys. The anomaly is equiaxed, about 2000 meters in length and width, slightly to the north, anomalous gradient is small, the curve is more slippery, Za maximum is 1050γ, basically no negative associated (Figure 1). Abnormally located in the contact zone, the terrain is flat and covered extensively by the Quaternary aflatoxins. Only the northeastern corner is covered with a diorite, showing weak magnetism, which is the only disturbance factor in the area.