ABSTRACT 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 Corsinipollenites oculusnoctis Zone (Aquitanian to early Burdigalian: 23.03–17.71 Ma), delimited by the appearance of Acaciapollenites myriosporites, Retitricolporites wijmstrae and/or Corsinipollenites oculusnoctis and/or the disappearance of Cicatricosisporites dorogensis at the base; the Mar-B Malvacipolloides (Echitricolporites) maristellae Zone (Burdigalian: 17.71–16.1 Ma), from Malvacipolloides maristellae at the base to the disappearance of Retitricolporites wijmstrae at the top; the Mar-C Mauritiidites crassibaculatus Zone (latest Burdigalian to Late Langhian: 16.1–14.2/13.9 Ma), from the appearance of Grimsdalea magnaclavata at the base to the disappearance of Retitriporites dubiosus and/or the appearance of Crassoretitriletes vanraadshooveni and/or Psilastephanoporites tesseroporus; the Mar-D Crassoretitriletes vanraadshooveni Zone (Late Serravallian: 14.2–11.62 Ma), from the appearance of Crassoretitriletes vanraadshooveni and/or Psilastephanoporites tesseroporus to the disappearances of Mauritiidites crassibaculatus, Bombacacidites nacimientoensis, and Cyathidites congoensis; and the Mar-E Psilastephanoporites tesseroporus Zone (Early Tortonian to Late Messinian: 11.62–5.48 Ma) from the disappearance of Corsinipollenites oculusnoctis and/or Cyathidites congoensis to the disappearance of Psilastephanoporites tesseroporus and/or Siltaria santaisabelensis. These zones were corroborated by means of events ordination demonstrated using graphic correlation. The Mar-F Ctenolophonidites suigeneris Zone (latest Messinian to Zanclean) is described only in the Frontera-1 well from the disappearance of Psilastephanoporites tesseroporus to the last record of Ctenolophonidites suigeneris and/or Siltaria hammenii. 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.

中文翻译：

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马拉尼翁盆地（西亚马逊，秘鲁）的新近纪孢粉地层分带

摘要秘鲁北部马拉尼翁盆地新近纪的孢粉学（150 种花粉粒、43 种孢子、8 种甲藻囊肿、5 属藻类、2 属真菌孢子、有孔虫衬里和桡足类卵） , 首次从 6 口工业井（Arabela-1X、Maynas-1、Tucunare-1X、Tigrillo-30X、Nahuapa-24X 和 La Frontera-1）进行了彻底调查。定义了跨越早中新世到早上新世的六个孢粉带。按地层升序排列的区域如下：Mar-A Corsinipollenites oculusnoctis 带（阿基坦阶至布尔迪加阶早期：23.03-17.71 Ma），由 Acaciapollenites myriosporites 的出现划定，Retitricolporites wijmstrae 和/或 Corsinipollenites oculusnoctis 和/或 Cicatricosisporites dorogensis 在基部消失；Mar-B Malvacipolloides (Echitricolporites) maristellae 区（布尔迪加尔语：17.71–16.1 Ma），从底部的 Malvacipolloides maristellae 到顶部的 Retitricolporites wijmstrae 消失；Mar-C Mauritiidites crassibaculatus 区（最新的布尔迪加期到晚朗吉期：16.1-14.2/13.9 Ma），从底部的 Grimsdalea magnaclavata 的出现到 Retitriporites dubiosus 的消失和/或 Crassoretitriletes vanraadshoopsiphane ; Mar-D Crassoretitriletes vanraadshooveni 区（晚塞拉瓦利亚：14.2–11.62 Ma），从 Crassoretitriletes vanraadshooveni 和/或 Psilastephanoporites tesseroporus 的出现到 Mauritiidites crassibaculatus、Bombacacidites nacimientoensis 和 Cyathidites congoensis 的消失；从 Corsinipollenites oculusnoctis 和/或 Cyathidites congoensis 消失到 Psilastephanoporites tesseroporus 和/或 Siltaria 的 Mar-E Psilastephanoporites tesseroporus 区（早托尔顿阶到晚墨西拿：11.62-5.48 Ma）。这些区域通过使用图形相关性展示的事件排序得到证实。Mar-F Ctenolophonidites suigeneris 区（最新的墨西拿至 Zanclean）仅在 Frontera-1 井中描述，从 Psilastephanoporites tesseroporus 消失到 Ctenolophonidites suigeneris 和/或 Siltaria hammenii 的最后记录。