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Deep seismic sections were obtained by mathematical reprocessing of conventional vibroseis data recorded in the central sector of the Neuquen Basin. The lines involved linear upsweeps with frequency band of 12-65 Hz and time-length of 8sec. The field records were characterized by time-lengths of 13 sec and a sampling period of 4 msec . The Self-Truncating Extended Correlation algorithm was used to compute cross-correlation between the sweep and the records. The original frequency-band of 12-65 Hz was preserved for the first 5 sec of trace. However, this band was affected by an upper-frequency decreasing from 5 sec on,at a predicted linear-rate of 6.625 Hz/sec. Hence, correlated deep-records with a time-length of 11 sec and a final trace-band of 12-25 Hz were calculated. Depth-migration was implemented on the extended traces. Consequently, progressive models of crust velocity were iteratively matched with the corresponding migrated log. The iterative process was considered concluded when it was observed acceptable coincidence between the model and the depth-migrated horizons. The basin stratigraphy in the area consists of a continental sequence of initial sinrift (Precuyano) deposited on halfgrabens, followed by strong cycles of marine and continental postrift units (Cuyo,Lotena, and Mendoza groups). In addition, continental sedimentites are present covering the before sequences (Rayoso and Neuquén groups). The initial structuration is considered of Superior Triassic-Liassic age. While, the postrif phase would have extended until Early Cretaceous. The analysis in the area of Las Carceles reveals the following: (1)The lower-crust top is placed at about23-24 km; (2)An oblique reflector horizon between 16 and 18 km depth, is considered as a master shear that controlled the extensional system; (3)A submaster fault, between 8.5 and 12 km depth, is partially recognized in seismic sections; (4)The top of the rift basemen is characterized by irregular depths that, from W to E, fluctuates from 9 to 5 km; (5)Evident features of tectonic inversion, including sinrift as well as part of postrift sequences (i.e. Cuyo and maybe Lotena groups) are observed to the W of Los Chihuidos dorsal (this inversion episode was possibly initiated in the Bathonian-Callovian). In Bajadade Anelo, the study demonstrated that: (1)The top of the pre-liasic basemen is located at about 5 km depth, showing a smooth topographic relief; (2)In the central-western sector are detected features of bipolar inversion (this inversion episode dated Pliensbachian-Toarcian is previous to the Bathonian-Callovian inversion, and is not reported in previous papers); (3)The middle level of the Cuyo group is characterized by oblique reflections related with a strong sedimentary progradation toward the west.