Mt Studies At Sedimentary Basin Of Sierras Pampeanas, Argentina

MT data from profiles located over intermontane sedimentary basins of Sierras Pampeanas in North-West of<br>Argentina are analyzed through 2D inversion methods.<br>These basins are very deep and have an important deposit of Tertiary sediments. Sediments contain Miocene to<br>recent sequences of volcanic or continental detrial origin. Lithological variations occur from one intermontane<br>basin to another and they lie on a basement peneplain surface formed after the middle Paleozoic and frequently<br>exhumed on the range.<br>The resulting electrical models show sedimentary sequences with variable thickness (between 3 to 9 km). In all<br>cases, a very conductive layer beneath the basement are detected.