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Earth, Planets and Space
Fig. 5 | Earth, Planets and Space

Fig. 5

From: Effect of a huge crustal conductivity anomaly on the H-component of geomagnetic variations recorded in central South America

Fig. 5

Electromagnetic induction results from NW Brazil (Bologna et al. 2014). (Top) Observed and calculated real induction arrows for a period of 320 s, together with the PACA conductor at a depth of 20 km (dark area) as mapped by GDS modeling. Green dashed line is the location of the inverted MT profile. The main geologic structures are: Amazonian Craton (AC), Paraguay belt (PyB), Brasília belt (BB), Pantanal Basin (PnB) and Paraná basin (PrB). Location of geomagnetic stations (CB and PN) is also included. (Bottom) 2-D resistivity model across PACA obtained by inversion of MT data. Projection of the CB magnetic station on the MT profile is shown

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