New insights into the early Bajocian (Middle Jurassic) carbon cycle perturbation
Résumé
Mesozoic strata record numerous negative and positive carbon isotope excursions (CIE). The Middle Jurassic records a negative ~0.5‰ CIE at the Aalenian-Bajocian boundary followed by a positive ~1.5‰ CIE covering the entire early Bajocian. Although these CIEs are recorded in northern and southern western Tethys and may reflect perturbations to the global carbon cycle, they remain to remain poorly addressed yet. In this study, we present new geochemical and sedimentological data from the Chaudon-Norante section in France and Murtinheira section in
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