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Book Chapter

Reprocessing and interpretation of deep structures in a regional transect of the Parnaíba Basin, Brazil

By
Rafael R. Manenti
Rafael R. Manenti
Centre for Research in Geophysics and Geology (CPGG) and National Institute of Science and Technology of Petroleum Geophysics (INCT-GP/CNPQ/MCT), Federal University of Bahia (UFBA), Rua Barão de Geremoabo, Salvador, Bahia, Brazil
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Wilker E. Souza
Wilker E. Souza
Centre for Research in Geophysics and Geology (CPGG) and National Institute of Science and Technology of Petroleum Geophysics (INCT-GP/CNPQ/MCT), Federal University of Bahia (UFBA), Rua Barão de Geremoabo, Salvador, Bahia, Brazil
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Milton J. Porsani
Milton J. Porsani
Centre for Research in Geophysics and Geology (CPGG) and National Institute of Science and Technology of Petroleum Geophysics (INCT-GP/CNPQ/MCT), Federal University of Bahia (UFBA), Rua Barão de Geremoabo, Salvador, Bahia, Brazil
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Published:
January 01, 2018

Abstract

The Parnaíba cratonic basin is located in the NE of Brazil and its sedimentation started in the Silurian with the Serra Grande Group. Deep reflection seismic data were acquired along a 1400 km-long profile, with 20 s of two-way travel time (TWT) across the basin. Using these data, we were able to interpret and conjecture about the composition complexity level of the crust and mantle from the features presented in the lower crust, Moho reflector and upper mantle. In addition, the presence of basaltic intrusions from the Sardinha and Mosquito formations are mapped as outcrops and magnetic anomalies on the geological map, and by correlating these areas of occurrence with the lack of the Moho in the seismic section may suggest that these igneous bodies, in some way, contribute to the lack of signal seen in parts of the data.

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Contents

Cratonic Basin Formation: A Case Study of the Parnaíba Basin of Brazil
CONTAINS OPEN ACCESS

M. C. Daly
M. C. Daly
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R. A. Fuck
R. A. Fuck
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J. Julià
J. Julià
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D.I.M. MacDonald
D.I.M. MacDonald
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A. B. Watts
A. B. Watts
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Geological Society of London
Volume
472
ISBN electronic:
9781786204127
Publication date:
January 01, 2018

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