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The Quaternary stratigraphy of the São Paulo Basin, southeastern Brazil

Author

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  • Renato Henrique-Pinto
  • Mauricio G. M. Santos

Abstract

Detailed sedimentological studies of the university main campus of São Paulo city, Brazil, revealed a significant unconformity at the top of the Cenozoic sedimentary deposits of the São Paulo Formation. This unconformity is overlapped by Quaternary sediments which can be traced in 1:20,000 scale and are here named as the Bosque Formation. This unit is characterized by poorly sorted mud deposits and very fine-grained red sand with granule- and pebble-sized clasts of the underlying São Paulo Formation. Furthermore, it overlies topographic highs of the Precambrian basement, and is laterally interfingered with fluvial terraces; it is eroded by the modern river at the lower reaches of the outcrops. The Bosque Formation records sedimentation characterized by a widespread mudflow that overlays old alluviums sediments, and was likely deposited during the beginning of the Holocene.

Suggested Citation

  • Renato Henrique-Pinto & Mauricio G. M. Santos, 2022. "The Quaternary stratigraphy of the São Paulo Basin, southeastern Brazil," Journal of Maps, Taylor & Francis Journals, vol. 18(2), pages 190-199, December.
    • Handle: RePEc:taf:tjomxx:v:18:y:2022:i:2:p:190-199
    DOI: 10.1080/17445647.2021.2018367
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