Modelagem geo-estatística da reserva lavrável de argila para fabricação de cerâmica vermelha na bacia do baixo Jaguaribe, Russas (CE).

Abstract

The ceramist polo of Lower Jaguaribe is the largest in the State of Ceará, with 137 ceramics in activity in 2012 (Cavalcanti et al., 2014). The extraction of clay is carried out in a spray form in small fronts mining, open without any technical criteria, a fact that brings in many cases in the early exhaustion of the deposit and consequent abandonment of cava, causing serious environmental impacts. To mitigate these impacts, it is necessary to decrease the number of extraction areas, focusing exploration in areas where the clay has greater depth. In this context, the geostatistical modeling is applied here to a better understanding of the spatial behavior of mineable reserves of clay in the study area, contributing to the planning of their operations, with respect for the environment and ensuring income and development of local populations. In spatial modeling was used interpolator called kriging, using knowledge of the spatial correlation obtained by the variogram to estimate the variable, thus enabling to estimate the thickness of the clay mineable reserves in places not sampled the study area. As a result, an area where the greatest thickness ofthe clay mineable reserves presents guidance SW /NE following the same orientation Jaguaribe River was obtained.