Abstract
A gravimetric survey was held at the Pocos de Caldas alkaline massif located at the border between Minas Gerais and Sao Paulo States, southeastern Brazil. Combining the existent and the new established gravity stations for this work, a total of 783 data points were available. Four profiles crossing the region were analyzed to produce a 2.5D geometry model; the obtained result was compared to a 3D independent model. The best fit model indicate a volume of 7,220 km 3 for the massif, which maintains the alkaline intrusion as second of largest size in the world.
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