A new drill hole magnetometer: preliminary results from the Tennant Creek area
A new drill hole magnetometer: preliminary results from the Tennant Creek area
复制标题
新型钻孔磁力计：来自 Tennant Creek 地区的初步结果
DOI：
10.1071/eg985365
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发表时间：
1985
影响因子：
0.9
通讯作者：
T. Hoschke
中科院分区：
文献类型：
--
作者：
T. Hoschke
摘要在澳大利亚北领地Tennant Creek地区开发了一套钻孔磁力计系统，主要用于帮助寻找含金磁铁矿体。探头包含三个固定的正交磁通门磁强计和三个相应的正交倾角计。倾角计用于消除探头旋转和钻孔倾角对磁力计数据的影响。然后根据钻孔偏差对读数进行校正，并去除背景场以产生异常矢量。在Tennant Creek West Gibbet勘探区的一个钻孔显示了该仪器在定位和定义磁体方面的潜力。此外，磁强计是一种非常灵敏的钻孔测量工具，可用于获得与孔相交的岩石单元的磁化率。
Abstract A drill hole magnetometer system has been developed primarily to help in the search for gold bearing magnetite bodies in the Tennant Creek area in the Northern Territory. The probe contains three fixed orthogonal fluxgate magnetometers with three corresponding orthogonal inclinometers. The inclinometers are used to remove the effects in the magnetometer's data produced by probe rotation and drill hole inclination. Readings are then corrected for drill hole deviation and the background field is removed to produce anomalous vectors. A drill hole surveyed at the West Gibbet Prospect at Tennant Creek shows the potential of the instrument in locating and defining magnetic bodies. In addition, the magnetometer is an extremely sensitive drill hole survey tool and can be used to obtain an idea of the magnetic susceptibility of rock units intersected by the hole.