Dissertation Defense
Felipe Augusto Hartmann Franco Teixeira
Program: Geophysics
Title: "Shallow structure of the Pitanga Dome, through seismological methods, preliminary results"
Advisor: Prof. Dr. George Sand Leão Araújo de França - IAG/USP
Judging Committee:
- Prof. Dr. George Sand Leão Araújo de França - Orientador - IAG/USP
- Prof. Dr. Carlos Vinícius Alves Ribeiro – UnB (por videoconferência)
- Prof. Dr. Cristobal Condori Quispe – UNSA, Peru (por videoconferência)
Alternate Members:
- Profa. Dra. Liliana Alcazar Diogo - IAG/USP
- Prof. Dr. Carlos da Silva Vilar - UFBA
- Prof. Dr. Josibel Gomes de Oliveira Júnior - UFRN
Abstract: The Pitanga Dome is a structural high located in the east-northeast partof the Paraná Sedimentary Basin, close to the cities of Rio Claro and Piracicaba, in the western portion of the Paulista Peripheral Depression, and in it, geological formations such as the Corumbataí Formation, Tatuí Formation, Itararé Group and the Irati Formation stand out. The structure has been the subject of studies since the 19th century, but interest in this region increased in the early 20th century due to its potential hydrocarbon storage potential. Geophysical works were also carried out in the northern portion of the Dome. This dissertation aimed to investigate the shallow structure of this region through the integration of seismic and seismological methods, by carrying out 12 HVSR surveys and 2 refraction seismic tests at different places of the Dome. Seismic surveys were able to provide information from the subsurface down to a depth of just over 15 meters, while HVSR surveys, depending on the point, were able to provide information from a depth of up to more than 365 meters from the inversion and and both methods identified basement rocks at a depth of tens of meters and also identified that the Dome has greater sediment thicknesses in the northern portion and smaller in the southern portion.
Keywords: HVSR, Pitabga Dome, Shallow Structure