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- W4225491837 abstract "A review of existing data and new data on the Juruá River, the most representative and typical locality for stratigraphical and palaeoecological studies in southwestern Amazonia, is presented. Three units have been recognized: Older Pleistocene sediments, Late Pleistocene sediments, and Holocene sediments. The Late Pleistocene sediments and the Holocene sediments are forming the Lower Terrace. In the bone-bearing conglomerate of the Late Pleistocene sediments a rich Pleistocene Lujanan mammal fauna was recorded. The mammal fauna and the conglomeratic sediments indicate climate aridity in the area, probably during the Middle Pleniglacial of the Last Glaciation. Another phase of sedimentation, Holocene in age, has been recognized. The presence of fine sediments, lateral accretion deposits, and abundant remains of trunks, leaves and steams in the sediments indicate that the rain forest was present in the area during the Holocene. At this time the river had a meandering pattern. RESUMEN: Se presenta una revisión de datos existentes y nuevos acerca del río Juruá, la localidad más típica y representativa para estudios estratigráficos y paleoecológicos en Amazonia Sud-Occidental. Se han reconocido tres unidades: sedimentos del Pleistoceno antiguo, sedimentos del Pleistoceno tardío y sedimentos del Holoceno. Los sedimentos del Pleistoceno tardío y Holoceno forman la Terraza Inferior. Una rica fauna pleistocènica Lujanense se ha recuperado en un conglomerado de sedimentos del Pleistoceno tardío que contiene un nivel de restos óseos. La fauna de mamíferos y los sedimentos conglomerádicos indican clima árido en el área, probablemente durante el Pleniglacial medio de la Ultima Glaciación. Otra fase de sedimentación, de edad Holoceno, se ha reconocido. La presencia de sedimentos finos, depósitos de acreción lateral y abundantes restos de troncos, hojas y ramas en los sedimentos 28indican que hubo condiciones de selva pluvial en el área durante el Holoceno. Para este momento, el río mostraba un patrón meandroso." @default.
- W4225491837 created "2022-05-05" @default.
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- W4225491837 date "2022-04-07" @default.
- W4225491837 modified "2023-09-30" @default.
- W4225491837 title "The Late Quaternary of the Upper Juruá River, Southwestern Amazonia, Brazil: Geology and Vertebrate Palaeontology" @default.
- W4225491837 doi "https://doi.org/10.1201/9780203741429-3" @default.
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