Neogene palynostratigraphic zonation of the Maranon Basin, Western Amazonia, Peru F.J. Parra R.E. Navarrete M.M. di Pasquo M. Roddaz Y. Calderón P. Baby 10.6084/m9.figshare.11309453.v1 https://tandf.figshare.com/articles/dataset/Neogene_palynostratigraphic_zonation_of_the_Maranon_Basin_Western_Amazonia_Peru/11309453 <p>The palynology (150 species of pollen grains, 43 species of spores, eight species of dinoflagellate cysts, five genera of algae, two genera of fungal spores, foraminiferal linings, and copepod eggs) of the Neogene succession in the Marañon Basin, north Peru, was thoroughly investigated for the first time from six industrial wells (Arabela-1X, Maynas-1, Tucunare-1X, Tigrillo-30X, Nahuapa-24X, and La Frontera-1). Six palynozones spanning the Early Miocene to the Early Pliocene were defined. The zones in stratigraphically ascending order are as follows: the Mar-A <i>Corsinipollenites oculusnoctis</i> Zone (Aquitanian to early Burdigalian: 23.03–17.71 Ma), delimited by the appearance of <i>Acaciapollenites myriosporites</i>, <i>Retitricolporites wijmstrae</i> and/or <i>Corsinipollenites oculusnoctis</i> and/or the disappearance of <i>Cicatricosisporites dorogensis</i> at the base; the Mar-B <i>Malvacipolloides</i> (<i>Echitricolporites</i>) <i>maristellae</i> Zone (Burdigalian: 17.71–16.1 Ma), from <i>Malvacipolloides maristellae</i> at the base to the disappearance of <i>Retitricolporites wijmstrae</i> at the top; the Mar-C <i>Mauritiidites crassibaculatus</i> Zone (latest Burdigalian to Late Langhian: 16.1–14.2/13.9 Ma), from the appearance of <i>Grimsdalea magnaclavata</i> at the base to the disappearance of <i>Retitriporites dubiosus</i> and/or the appearance of <i>Crassoretitriletes vanraadshooveni</i> and/or <i>Psilastephanoporites tesseroporus</i>; the Mar-D <i>Crassoretitriletes vanraadshooveni</i> Zone (Late Serravallian: 14.2–11.62 Ma), from the appearance of <i>Crassoretitriletes vanraadshooveni</i> and/or <i>Psilastephanoporites tesseroporus</i> to the disappearances of <i>Mauritiidites crassibaculatus</i>, <i>Bombacacidites nacimientoensis</i>, and <i>Cyathidites congoensis</i>; and the Mar-E <i>Psilastephanoporites tesseroporus</i> Zone (Early Tortonian to Late Messinian: 11.62–5.48 Ma) from the disappearance of <i>Corsinipollenites oculusnoctis</i> and/or <i>Cyathidites congoensis</i> to the disappearance of <i>Psilastephanoporites tesseroporus</i> and/or <i>Siltaria santaisabelensis</i>. These zones were corroborated by means of events ordination demonstrated using graphic correlation. The Mar-F <i>Ctenolophonidites suigeneris</i> Zone (latest Messinian to Zanclean) is described only in the Frontera-1 well from the disappearance of <i>Psilastephanoporites tesseroporus</i> to the last record of <i>Ctenolophonidites suigeneris</i> and/or <i>Siltaria hammenii.</i> This study suggests that Pliocene sedimentation is also recorded in the Western Amazonia of Peru, and provides new palynological information compared with the Mio–Pliocene Solimões, Acre, and eastern Amazonas basins.</p> 2019-12-03 08:55:19 South America neotropical palynology palynological zonation Neogene Western Amazonia Marañon Basin Peru