Preliminary and partial results of a gravity survey on the Juquiá alkaline-carbonatite complex are presented. The gravity<br>survey shows a complex pattern characterized by a 3D geometry in correspondence to the magnetic anomalies defined<br>through the São Paulo - Rio de Janeiro aeromagnetic survey project. To improve the resolution of the present inferred<br>structures, additional gravity measurements will be performed for the main outcropping or buried bodies, followed by a<br>3D gravity modelling taking into account the magnetic signature of the whole complex .The preliminary results here<br>presented are part of a larger project aiming the volumetric, geometric and emplacement evaluation for a number of<br>alkaline intrusive bodies in the region.


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