Late Cretaceous and early Tertiary Palynofacies of Southwestern Nigeria

• M. Babajide Salami ^[1]
  1. [1] Obafemi Awolowo University

     Obafemi Awolowo University

     Nigeria

     
• Localización: Revista española de micropaleontología, ISSN 0556-655X, Vol. 16, Nº. 1-3, 1984, págs. 415-423
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Analysis of Maastrichtian, Paleocene and Eocene Palynomorphs, recovered from the Araromi Shale, a subsurface equivalent of the Abeokuta Formation of southwestern Nigeria, shows dominant and diverse angiospermous pollen. Pteridophytic spores and organic-walled microplankton are less diverse, but locally common to abundant. Miospore assemblage consists principally of monocolpates, less diverse but locally abundant tricolporates, laevigate trilete and monolete spores, and other diverse suprageneric groups that show few specimens for each of the recovered taxa. Organic-walled microplankton consist mainly of spiniferate forms, some dinogymnioids, and peridinioid cysts. Some of the angiospermous pollen (mainly monocolpates and tricolporates) and organic-walled microplankton show inverse abundance relationships at some horizons, which are considered related to transgression - regression phenomena and/or local marine incursions.