The Toarcian Oceanic Anoxic Event in the South Iberian Palaeomargin (eBook)

Introduction 1.1. The Toarcian Oceanic Anoxic Event 1.2. The Betic Cordillera 1.3. The lower Jurassic from the epeiric platforms 1.4. Geological setting of the reference sections External Subbetic outcrops 3.1. Fuente Vidriera section 3.1.1. Mineralogy 3.1.2. Trace fossils 3.1.3. Foraminiferal and ostracod assemblages 3.1.4. Stable isotopes 3.1.5. Geochemical proxies 3.1.6. Interpretation 3.1.6.1. The T-OAE record from Fuente Vidriera section 3.1.6.2. The negative carbon isotopic excursion 3.1.6.3. Role of water stagnation vs. productivity 3.2. Cueva del Agua section 3.2.1. Facies and microfacies 3.2.2. Microfossil assemblages 3.2.3. Geochemistry 3.2.4. Interpretation 3.2.4.1. Dignification of facies and microfacies 3.2.4.2. Organic matter and sea-bottom oxygenation 3.2.4.3. Isotopic fluctuations and environmental changes 3.3. La Cerradura section 3.3.1. Macroinvertebrates 3.3.2. Trace fossils 3.3.3. Calcareous nannofossils 3.3.4. Geochemistry 3.3.5. Interpretation 3.3.5.1. Pre-biotic crisis phase 3.3.5.2. T-OAE biotic crisis phase 3.3.5.3. Recovery phase 4. Middle Subbetic outcrops 4.1. Iznalloz section 4.1.1. Ammonite biostratigraphy 4.1.2. Lithofacies and microfacies 4.1.3. Microfossil assemblage 4.1.4. Trace fossils 4.1.5. Interpretation 4.1.5.1. Origin of sediment and lithofacies 4.1.5.2. Oxygenation 4.1.5.3. Nutrient content 4.1.5.4. Palaeoenvironmental reconstruction 4.2. Arroyo Mingarrón section 4.2.1. Lithofacies and microfacies 4.2.2. Calcareous nannofossils 4.2.3. Interpretation 4.2.3.1. The Toarcian Ammonitico Rosso context 4.3. Poloria section 4.3.1. Facies and microfacies 4.3.2. Stable isotopes 4.3.3. Interpretation 5. The incidence of the T-OAE in the South Iberian Palaeomargin 6. References