SUMMARY
Effect of geophysical method combination in the
supplementary discovery of iron, lead-zinc and wolfram
ores in the Thượng Gi�p area, Tuy�n Quang - Bắc Cạn
region
Phan Minh
Tuấn, Lại Mạnh Gi�u, L� Thanh Hải
The survey of aeromagnetic
anomaly in the Thượng Gi�p area, Tuy�n Quang - Bắc Cạn
region was carried out by two steps. In the first step, the survey was carried
out on all over the area by ground magnetic method, combinated with fied trip.
The result allow us to determine 6 complexes of aeromagnetic
anomalies and to newly discover 9 complexes of magnetic anomalies, to determine
13 complexes of magnetic anomalies, that are mineral prospect areas. In the
second step, detailed survey on four zones by complexes of geophysical methods,
combined with geological methods. The results allow us to clarify the prospect of
mineralization zones, ore bodies and the dip development, to forecast mineral
resources of Fe, Pb-Zn, W ores. Two occurrences of
Pb-Zn ores were newly discovered, a band of iron ore extending in 10 km, was discovered
together with W, Au, especially Au mineralization of good prospect.
Người bi�n tập: Nguyễn Tuấn Phong