摘要
通过对冀东和冀北地区大比例尺（１：２５０００）航磁梯度资料的分析研究发现，航磁梯度与常规的航磁总场相比，在金矿地质填图中可以更准确地划分不同地层分界、确定火成岩的分布范围以及断裂构造带的平面位置等。总结了金矿床上航磁梯度异常的变化规律。最后，利用包括航磁梯度在内的综合航空物探信息，对冀东渠子地地区进行了金矿预测研究，取得了较好的地质效果。
ased on the analysis of aeromagnetic gradient survey data to the large scale (1:25 000), it is shown that different stratigraphic boundaries, distribution of igneous rocks and plane location of structural zones of fracture are able to be determined more accurately by using aeromagnetic gradient anomalies in comparison with conventional aeromagnetic total field anomalies in geological mapping related to gold deposits. The features of aeromagnetic gradient anomalies about the gold deposits are summarized. Finally, the predictive research of the gold deposits in Quzidi area, the eastern part of Hebei Province is conducted by using of comprehensive information of airborne geophysical exploration including aeromagnetic gradients and the better geological results are obtained.
出处
《现代地质》
CAS
CSCD
1996年第2期239-249,共11页
Geoscience
基金
国家自然科学基金
关键词
金矿床
地质填图
成矿预测
航磁梯度
磁异常
aeromagnetic gradient
modulus of aeromagnetic total gradient
apparent magnetic susceptibility mapping
gold deposit prediction
the eastern part of Hebei Province
