Artículos de revistas
FORAMINIFERAL RECORD OF CHANGES IN SUMMER MONSOON PRECIPITATION AT THE SOUTHEASTERN BRAZILIAN CONTINENTAL MARGIN SINCE THE LAST GLACIAL MAXIMUM
Fecha
2010Registro en:
REVISTA BRASILEIRA DE PALEONTOLOGIA, v.13, n.2, p.79-88, 2010
1519-7530
10.4072/rbp.2010.2.01
Autor
PIVEL, Maria Alejandra Gomez
TOLEDO, Felipe Antonio de Lima
COSTA, Karen Badaraco
Institución
Resumen
Changes in the oxygen isotopic composition of the planktonic foraminifer Globigerinoides ruber and in the foraminifera faunal composition in a core retrieved from the southeastern Brazilian continental margin were used to infer past changes in the hydrological balance and monsoon precipitation in the western South Atlantic since the Last Glacial Maximum (LGM). The results suggest a first-order orbital (precessional) control on the South American Monsoon precipitation. This agrees with previous studies based on continental proxies except for LGM estimates provided by pollen records. The causes for this disagreement are discussed.