Organic and inorganic geochemical data of sediment cores XC-03 and XC-01-2, Xingu River, Amazon Basin
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| Autores principales: | , , , , , , , , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2019
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| _version_ | 1867167677278060544 |
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| author | Bertassoli Junior, Dailson José Sawakuchi, André Oliveira Chiessi, Cristiano Mazur Schefuß, Enno Hartmann, Gelvam André Häggi, Christoph Zabel, Matthias McGlue, Michael M Santos, Rudney A Pupim, Fabiano Nascimento |
| author_facet | Bertassoli Junior, Dailson José Sawakuchi, André Oliveira Chiessi, Cristiano Mazur Schefuß, Enno Hartmann, Gelvam André Häggi, Christoph Zabel, Matthias McGlue, Michael M Santos, Rudney A Pupim, Fabiano Nascimento |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Late Holocene hydroclimate variations have been extensively recognized in Amazonia, but the effects of such changes on riverine discharge within the Amazon lowlands are still poorly understood. We investigated a sediment core covering circa 4,000 to 300 cal yr BP collected in the lower valley of the Xingu River (Xingu Ria) in an area under the influence of the Amazon River. Our results indicate a decrease in precipitation in the Amazon lowlands throughout the studied period and reduced input of coarser and potassium‐rich Amazon River sediments to the confluence from about 2,600 to 1,400 cal yr BP. We suggest that lower temperatures in the extratropical Southern Hemisphere weakened the South American Summer Monsoon and led to a decrease in the water discharge of the Amazon River during this period. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_906264 |
| institution | PANGAEA |
| language | en |
| publishDate | 2019 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Organic and inorganic geochemical data of sediment cores XC-03 and XC-01-2, Xingu River, Amazon Basin Bertassoli Junior, Dailson José Sawakuchi, André Oliveira Chiessi, Cristiano Mazur Schefuß, Enno Hartmann, Gelvam André Häggi, Christoph Zabel, Matthias McGlue, Michael M Santos, Rudney A Pupim, Fabiano Nascimento Amazon; Compound-specific Isotopes; Late Holocene; Xingu River Late Holocene hydroclimate variations have been extensively recognized in Amazonia, but the effects of such changes on riverine discharge within the Amazon lowlands are still poorly understood. We investigated a sediment core covering circa 4,000 to 300 cal yr BP collected in the lower valley of the Xingu River (Xingu Ria) in an area under the influence of the Amazon River. Our results indicate a decrease in precipitation in the Amazon lowlands throughout the studied period and reduced input of coarser and potassium‐rich Amazon River sediments to the confluence from about 2,600 to 1,400 cal yr BP. We suggest that lower temperatures in the extratropical Southern Hemisphere weakened the South American Summer Monsoon and led to a decrease in the water discharge of the Amazon River during this period. |
| title | Organic and inorganic geochemical data of sediment cores XC-03 and XC-01-2, Xingu River, Amazon Basin |
| topic | Amazon; Compound-specific Isotopes; Late Holocene; Xingu River |
| url | https://doi.org/10.1594/PANGAEA.906264 |