Les modélisations 3D en gravité à l'échelle semi-régionale peuvent mener à de nouvelles découvertes.

Itapororoca is located in the northeast of Brazil

The area is covered by tertiary sediments and alluvium.

In 1975 an airborne magnetic survey detected a circular anomaly, suggestive of a volcanic intrusive.

In order to explore the anomaly a Semi-regional gravity survey was conducted, revealing a negative gravity anomaly.

Subtraction of the regional gravitational field revealed the residual field and negative 8mGAL anomaly coincident with a localized aeromagnetic anomaly and with hydrothermally altered outcrop.

2.5 D modeling of the data along 4 profiles was used to estimate the volume of the deposit.

The results of 3D modeling indicate that the intrusion extends to a depth of 8.5 km and has a total volume of 23 km3