Stable isotopes as a tool for stratigraphic studies: Insights from the Brazilian sedimentary record

Rodrigues, René; Pereira, Egberto; Bergamaschi, Sérgio; Bastos, Lucas Pinto Heckert

Abstract

The application of stable isotopes in stratigraphic studies is here demonstrated with selected sedimentary Brazilian sections from the Paleozoic, Mesozoic and Cenozoic. In those different age-case we present the application of δ13Corg and carb, δ15Ntotal and δ18Ocarb stable isotopes showing how past global events and environmental conditions variation can imprint characteristic isotopic signatures in sedimentary rocks profiles and how they can be useful in stratigraphic studies. Also, key points for the interpretation of stable isotope data derived from sedimentary organic matter and carbonates are discussed demonstrating how bulk-rocks analyses can be really useful for stratigraphic correlations and paleoenvironmental interpretations when a high-resolution interpretation is conducted.

Citation

Rodrigues, R., Pereira, E., Bergamaschi, S., & Bastos, L. P. H. (2019). Stable isotopes as a tool for stratigraphic studies: Insights from the Brazilian sedimentary record. In M. Montenari (Ed.), Timescales (133-164). Elsevier. https://doi.org/10.1016/bs.sats.2019.08.007

• Online Publication Date: Nov 9, 2019
• Publication Date: 2019
• Deposit Date: Jun 12, 2023
• Publisher: Elsevier
• Pages: 133-164
• Series Title: Stratigraphy
• Series ISSN: 2468-5178
• Book Title: Timescales
• Chapter Number: 4
• ISBN: 978-0-12-817552-1
• DOI: https://doi.org/10.1016/bs.sats.2019.08.007