Morphostructural Analysis in the Gilbués and Picos Kimberlites Provinces, Piauí, Brasil

Abstract

Advances in technology and the availability of information enable greater reliability and speed in lithological and structural boundaries of kimberlitic bodies. The article aims to correlate lithostructural the Picos (PKP) and Gilbués (PKG) Kimberlites Provinces through remote sensing and based on existing geological features. The research was based on the acquisition of publications and cartographic data, in addition to satellite images of Landsat 8, and data from the SRTM mission (Shuttle Radar Topography Mission). The shaded relief maps and digital terrain model indicate strong drainage pattern in PKP and PKG, with form of relief more preserved in the PKP. The guidelines show a similar pattern in the two provinces, with a regional trend NE-NW. The satellite images showed greater efficiency for PKP, presenting their kimberlitic bodies highlighted by dark green color. Geologically, it is assumed that these provinces of kimberlites are housed in sedimentary rocks of the Parnaíba Basin, and temporally, the Picos kimberlites are younger than the Gilbués kimberlites.