Bioevents and redox conditions around the Cenomanian-Turonian anoxic event in Central Mexico

• Published in: Palaeogeography, Palaeoclimatology, Palaeoecology
• Main Authors: Núñez Useche, Fernando, Canet Miquel, Carles, Barragán, Ricardo, Alfonso Abella, María Pura
• Other Authors: Universitat Politècnica de Catalunya. Departament d'Enginyeria Minera, Industrial i TIC, Universitat Politècnica de Catalunya. GREMS - Grup de Recerca en Mineria Sostenible
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier 2016
• Subjects: Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Mineralogia; Mineralogy > Mexico; Pyrites; Anoxic/dysoxic bottom waters; Bacterial sulfate reduction; Cenomanian-Turonian; Central Mexico; Organic-rich sediments; Pyrite framboids; Mineralogia > Mèxic; Pirites; North Atlantic
• Online Access: http://hdl.handle.net/2117/119931; https://doi.org/10.1016/j.palaeo.2016.01.035

The Xilitla section of central Mexico (western margin of the proto-North Atlantic) is characterized by pelagic sediments enriched in marine organic matter. Using biostratigraphic and radiometric data, it was dated at the latest Cenomanian-earliest Turonian transition. We identified an interval coeval with the faunal turnover associated with the Oceanic Anoxic Event 2 (OAE 2), recording the Heterohelix shift and the Peer Reviewed Preprint