Abstract
We present preliminary estimates of basement depth and basalt thickness beneath two seismic s tations in the Parana basin using the teleseismic receiver function method. Deep earthquakes in the nearby Andean subduction zone are a good source of high frequency (up to ~10Hz) P waves s uitable to study the main layers of deep sedimentary basins. Beneath Presidente Prudente the basement depth (about 4.5 - 4.9 km) is not well defined but the total basalt thickness is clearly defined as 1. 2km; beneath Tres Irmaos, t he basement depth is 3.8 k m and the basalt thickness is 0.5 km. These values are consistent with isopach maps of t he Parana ba sin and show that t eleseismic receiver functions are potentially very useful to investigate deep sedimentary basins in Brazil.
Published Version
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