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From 1982 to 1986, more than 2500 gravity data were taken in an Andean Geotraverse covering northern Chile and northwestern Argentina between 64° and 71°W and 20° and 26°S. Including 2100 reprocessed older data, there is now a data base of about 4600 gravity values available, which can be used together with other geophysical and geologicalin formation for an interdisciplinary interpretation to solve some problems of the structure and development of the Central Andes. The new gravimetric data base, which includes the Bouguer‐, free‐air‐ and isostatic residual anomaly, is presented together with a preliminary interpretation.