Evaluación del estado isostático del valle de La Rioja, La Rioja - Argentina

We carry out a study isostatic 3D in the Valley of the east of La Rioja city in Argentina, considering a system of compensation isostática of the type Airy in stretched crustal.<br>The chart of Bouguer anomalies of gravimetric effects of the sedimentary column and of isostatic corrections, was used to prepare a chart of isostatic anomalies (or of residual isostatic anomaly) including the whole extension of the studied basin.<br>Our results point out that the isostatic anomalies are negative in the domain of the basin, with an evident deficit of antiroot. These values indicate us that in the future; 1) the crust underlying this basin, will ascend to reach the hydrostatic balance or 2) the strong crust could support the sedimentary deposit, without deformation.