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Conference Paper

Unraveling the western portion of Parecis Basin by Receiver Function

Authors

Franca,  George
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

do Nascimento,  João Pedro R.
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Nascimento,  André Vinícius de Sousa
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Citation

Franca, G., do Nascimento, J. P. R., Nascimento, A. V. d. S. (2023): Unraveling the western portion of Parecis Basin by Receiver Function, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3578


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020371
Abstract
The Parecis basin is located in the Midwest region of the Brazilian territory, with approximately 6000 meters of accumulated sediments. We used receiver function data from 5 temporary broadband stations belonging to the Parecis Basin Tectonic Studies network supported by CNPq and a permanent station from the Brazilian seismographic network, all located in the Parecis Basin. Then the HK stacking method and Common stacking point (CCP) of the Receiver Function data were applied, The application of the HK method allowed us to determine a Vp/Vs that varies from 1.74 to 1.89 along the profile and a crustal thickness that varies from 25 to 43 km. In the CCP profile, it was possible to observe the Moho and determine the probable basement of the basin. In addition, an intermediate region between the Moho and the basement was noticed, which was interpreted as the Conrad discontinuity. Therefore, in general, the applied methods showed results consistent with previous studies carried out in the Basin and it was noted that the CCP stacking promoted an evolution in the interpretative aspect of the structures.