Alternate Atlantic forest and climate phases during the early Pleistocene 41 kyr cycles in southeastern Brazil

PA Rodríguez-Zorro, MP Ledru, C Favier, E Bard… - Quaternary Science …, 2022 - Elsevier
The early Pleistocene was driven by 41 kyr glacial cycles that have been rarely
characterized in continental records, especially in South America. Most of long-term records …

A 121‐ka record of Western Andean fluvial response to suborbital climate cycles recorded by rhythmic grain size variations of the Lima fluvial fan

W Viveen, J Sanjurjo‐Sanchez… - Earth Surface …, 2024 - Wiley Online Library
A complete, fluvial stratigraphic record for the last glacial period of the Western Andes in
Peru is not available due to preservation issues and spatial variability in sedimentation …

The southern Brazilian tropical forest during the penultimate Pleistocene glaciation and its termination

AMC Aviles, MP Ledru… - Journal of …, 2024 - Wiley Online Library
To describe the composition of the penultimate glacial Brazilian Atlantic forest, we analyzed
pollen, charcoal and diatoms deposited in the section from 871 to 1400 cm of core CO14 …

Identifying contamination of heavy metals in soils of Peruvian Amazon plain: use of multivariate statistical techniques

JA Espinoza-Guillen, MB Alderete-Malpartida… - Environmental …, 2022 - Springer
Abstract The Peruvian Amazon plain has abundant natural resources and is home to great
biodiversity, which makes it an area with high economic potential. However, the use of its …

Two new species of Achnanthidium Kützing (Achnanthidiaceae) from the Quaternary sediments of the Colônia basin, Southeast Brazil

GC Marquardt, DC Bicudo, CEM Bicudo, MP Ledru… - Cryptogamie …, 2023 - BioOne
This research uses the techniques of light and scanning electron microscopy to observe two
species of Achnanthidium Kützing belonging to the A. minutissimum 'sensu lato'complex …

Mud redeposition during river incision as a factor affecting authigenic 10Be/9Be dating: Early Pleistocene large mammal fossil‐bearing site Nová Vieska, eastern …

M Šujan, R Braucher, A Chyba… - Journal of …, 2023 - Wiley Online Library
This study examines the suitability of the authigenic 10Be/9Be dating method to the dating of
the deposits of an incising river, taking as an example the Nová Vieska river terrace, which …

[PDF][PDF] Pseudostaurosira crateri sp. nov.(Fragilariaceae, Bacillariophyta), a new small araphid, fossil diatom species from the Pleistocene (Atlantic Forest, Brazil)

GC Marquardt, DC Bicudo, CEM Bicudo, MP Ledru… - Phytotaxa, 2021 - researchgate.net
Pseudostaurosira crateri sp. nov. is described from fossil material analyzed from a
Quaternary sediment core retrieved from the Colônia basin (located in the Brazilian Coastal …

From paleolake to peatland: Paleo environmental changes over glacial and interglacial cycles (Mid-Pleistocene) in the Colônia Basin, Brazil

GC Marquardt, DC Bicudo, JE Zanon… - Palaeogeography …, 2024 - Elsevier
Diatom and geochemical elements were used to analyze the transition from lake to peatland
in the Colônia basin, São Paulo, Brazil; local versus regional driving factors were examined …

Regional chronostratigraphy in the eastern Lesser Antilles quaternary fore-arc and accretionary wedge sediments: Relative paleointensity, oxygen isotopes and …

A Bieber, G St-Onge, N Feuillet, J Carlut… - Quaternary …, 2021 - Elsevier
Paleomagnetism is a powerful tool for establishing an almost continuous chronostratigraphy
for an entire region. When combined with other dating methods, absolute or relative, it can …

Mid-Pleistocene pollen types of the Brazilian Atlantic Forest (Colônia, São Paulo, Brazil)

OA Alfonso, MP Ledru - Review of Palaeobotany and Palynology, 2025 - Elsevier
We present 146 types of fossil palynomorphs deposited in Mid-Pleistocene sediment in the
basin of Colônia, SE Brazil, with the aim of improving our knowledge of past plant diversity of …