图6. 航磁ΔT、150 Hz TD等值线平面 a—航磁ΔT;b—150 Hz TD;1—断裂;2—岩体分布范围;3—航空大地电磁测线
Fig.6. Aeromagnetic ΔT and 150 Hz in-phase TD contour a—ΔT;b—150 Hz TD;1—fracture; 2—rock mass distribution range; 3—aeronautical magnetotelluric survey line