J
Jorge Abrao
Researcher at Federal Fluminense University
Publications - 10
Citations - 311
Jorge Abrao is an academic researcher from Federal Fluminense University. The author has contributed to research in topics: Last Glacial Maximum & Sedimentary organic matter. The author has an hindex of 8, co-authored 10 publications receiving 293 citations. Previous affiliations of Jorge Abrao include University of Antofagasta & Institut de recherche pour le développement.
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Journal ArticleDOI
A 21 000 cal years paleoclimatic record from Caçó Lake, northern Brazil: evidence from sedimentary and pollen analyses
Abdelfettah Sifeddine,Abdelfettah Sifeddine,Abdelfettah Sifeddine,Ana Luiza Spadano Albuquerque,Marie-Pierre Ledru,Marie-Pierre Ledru,Bruno Turcq,Bastiaan A. Knoppers,Louis Martin,Louis Martin,William Zamboni de Mello,Horst Passenau,José Maria Landim Dominguez,Renato Campello Cordeiro,Jorge Abrao,Abílio Carlos da Silva Pinto Bittencourt +15 more
TL;DR: Sedimentological studies including seismic profiles, mineralogy and organic geochemistry on two cores from the center and margin of Caco Lake, Maranhao State, northern Brazil, revealed variable climatic and environmental conditions during the last 21 cal kyr BP as discussed by the authors.
Journal ArticleDOI
Accumulation of organic carbon in five Brazilian lakes during the Holocene
Bruno Turcq,Ana Luiza Spadano Albuquerque,Renato Campello Cordeiro,A. Sifeddine,A. Sifeddine,F. L. Simões Filho,A.G Souza,Jorge Abrao,F.B.L Oliveira,Alexandra Silva,J Capitâneo +10 more
TL;DR: In this article, a comparative study was made of organic carbon accumulation in five lacustrine environments in Brazil (large open water lake, ponds with floating meadows and marshes) using the most representative cores to calculate the accumulation of total organic carbon (TOC) in the sediment over the past 12,000 cal years BP.
Journal ArticleDOI
Delivery and deposition of organic matter in surface sediments of Lagoa do Caçó (Brazil)
Abdelfettah Sifeddine,Philip A. Meyers,Renato Campello Cordeiro,Renato Campello Cordeiro,Renato Campello Cordeiro,Ana Luiza Spadano Albuquerque,Ana Luiza Spadano Albuquerque,Ana Luiza Spadano Albuquerque,Marcelo Bernardes,Marcelo Bernardes,Marcelo Bernardes,Bruno Turcq,Jorge Abrao,Jorge Abrao,Jorge Abrao +14 more
TL;DR: The depth-related processes that affect the production and deposition of sedimentary organic matter in Lagoa do Caco (Brazil) were analyzed to identify the depthrelated processes as discussed by the authors.
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Bulk composition of sedimentary organic matter used in palaeoenvironmental reconstructions: examples from the tropical belt of South America and Africa
Abdelfettah Sifeddine,Abdelfettah Sifeddine,Denis Wirrmann,Ana Luiza Spadano Albuquerque,Bruno Turcq,Bruno Turcq,Renato Campello Cordeiro,Marcio Henrique da C Gurgel,Jorge Abrao +8 more
TL;DR: The organic matter of lake sediments contains information that allows for the reconstruction of past environmental and climatic changes as discussed by the authors, which can be used to distinguish the inputs of organic matter from C 3 - vs. C 4 -type land plants.
Journal ArticleDOI
Petrographical and geochemical study of modern lacustrine sedimentary organic matter (Lagoa do Caçò, Maranão, Brazil): Relationship between early diagenesis, organic sedimentation and lacustrine filling
Mohammed Boussafir,Abdelfettah Sifeddine,Jérémy Jacob,Merouane Foudi,Renato Campello Cordeiro,Renato Campello Cordeiro,Ana Luiza Spadano Albuquerque,Ana Luiza Spadano Albuquerque,Jorge Abrao,Jorge Abrao,Bruno Turcq +10 more
TL;DR: In this paper, the results of organic petrographic and rock-Eval pyrolysis assessments of the biological origin and preservation state of the organic matter (OM) in modern sediments from two deep transects of the lake were presented.