The response of a dune succession from Lencois Maranhenses, NE Brazil, to climate changes between MIS 3 and MIS 2
In tropical Southern Hemisphere South America, late Quaternary marine core and speleothem records provide different proxies and accurate chronologies correlating millennial-scale intervals of increased precipitation with southward shifts of the Intertropical Convergence Zone (ITCZ). However, the cli...
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Online Access: | http://ir.ieecas.cn/handle/361006/12732 https://doi.org/10.1016/j.quaint.2019.12.012 |
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ftchinacascieeca:oai:ir.ieecas.cn:361006/12732 2023-06-11T04:12:21+02:00 The response of a dune succession from Lencois Maranhenses, NE Brazil, to climate changes between MIS 3 and MIS 2 Zular, Andre Sawakuchi, Andre O. Wang, Hong Guedes, Carlos C. F. Hartmann, Gelvam A. Jaqueto, Plinio F. Chiessi, Cristiano M. Cruz, Francisco W. Giannini, Paulo C. F. Daros, Vinicius K. Atencio, Daniel Trindade, Ricardo I. F. 2020-01-30 http://ir.ieecas.cn/handle/361006/12732 https://doi.org/10.1016/j.quaint.2019.12.012 英语 eng PERGAMON-ELSEVIER SCIENCE LTD QUATERNARY INTERNATIONAL http://ir.ieecas.cn/handle/361006/12732 doi:10.1016/j.quaint.2019.12.012 Lencois maranhenses dunefield Heinrich stadials Last glacial maximum Paleoclimate Coastal eolian deposits Optically stimulated luminescence Multy-proxy approach HEINRICH STADIAL 1 DOSE-RATE LATE QUATERNARY GRAIN-SIZE DUST ACCUMULATION SINGLE GRAINS LUMINESCENCE QUARTZ NORTH Physical Geography Geology Geography Physical Geosciences Multidisciplinary 期刊论文 2020 ftchinacascieeca https://doi.org/10.1016/j.quaint.2019.12.012 2023-05-08T13:24:11Z In tropical Southern Hemisphere South America, late Quaternary marine core and speleothem records provide different proxies and accurate chronologies correlating millennial-scale intervals of increased precipitation with southward shifts of the Intertropical Convergence Zone (ITCZ). However, the climatic effect of these intervals on coastal landforms is poorly understood. Here we investigated the response of abrupt and long-lasting climate events during the Marine Isotope Stages 3 and 2 in a 13.8-m thick sand succession located in a large-scale coastal eolian system, the Lencois Maranhenses Dunefield, NE Brazil, where winds and precipitation are anti-phased and controlled by the single action of the ITCZ. A chronology of the sediment overburden determined by optically stimulated luminescence (OSL) dating of 14 sediment samples obtained at 1-m intervals showed ages between 132.2 +/- 7.0 and 12.9 +/- 0.6 thousand years ago in stratigraphic order. A multi-proxy approach based on grain size, surface grain texture, heavy minerals, thermoluminescence (TL) sensitivity, inorganic geochemistry, reflectance, and magnetic parameters from 268 sediment samples collected at 5-cm intervals indicated periods of dune building and stabilization. Significant stabilization periods are synchronous with Heinrich Stadials 6, 4, 3, 2, and 1, and Greenland Stadial 4, within age model uncertainties. Heavy mineral analysis indicated a steady sand source to the dune succession, while TL sensitivity analysis of quartz grains showed the input allochthonous sediments during stadials. The preservation of peak dune activity during the Last Glacial Maximum is attributed to the enduring precipitation brought by the subsequent Heinrich Stadial 1 event. Report Greenland Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Greenland Quaternary International 537 97 111 |
institution |
Open Polar |
collection |
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
Lencois maranhenses dunefield Heinrich stadials Last glacial maximum Paleoclimate Coastal eolian deposits Optically stimulated luminescence Multy-proxy approach HEINRICH STADIAL 1 DOSE-RATE LATE QUATERNARY GRAIN-SIZE DUST ACCUMULATION SINGLE GRAINS LUMINESCENCE QUARTZ NORTH Physical Geography Geology Geography Physical Geosciences Multidisciplinary |
spellingShingle |
Lencois maranhenses dunefield Heinrich stadials Last glacial maximum Paleoclimate Coastal eolian deposits Optically stimulated luminescence Multy-proxy approach HEINRICH STADIAL 1 DOSE-RATE LATE QUATERNARY GRAIN-SIZE DUST ACCUMULATION SINGLE GRAINS LUMINESCENCE QUARTZ NORTH Physical Geography Geology Geography Physical Geosciences Multidisciplinary Zular, Andre Sawakuchi, Andre O. Wang, Hong Guedes, Carlos C. F. Hartmann, Gelvam A. Jaqueto, Plinio F. Chiessi, Cristiano M. Cruz, Francisco W. Giannini, Paulo C. F. Daros, Vinicius K. Atencio, Daniel Trindade, Ricardo I. F. The response of a dune succession from Lencois Maranhenses, NE Brazil, to climate changes between MIS 3 and MIS 2 |
topic_facet |
Lencois maranhenses dunefield Heinrich stadials Last glacial maximum Paleoclimate Coastal eolian deposits Optically stimulated luminescence Multy-proxy approach HEINRICH STADIAL 1 DOSE-RATE LATE QUATERNARY GRAIN-SIZE DUST ACCUMULATION SINGLE GRAINS LUMINESCENCE QUARTZ NORTH Physical Geography Geology Geography Physical Geosciences Multidisciplinary |
description |
In tropical Southern Hemisphere South America, late Quaternary marine core and speleothem records provide different proxies and accurate chronologies correlating millennial-scale intervals of increased precipitation with southward shifts of the Intertropical Convergence Zone (ITCZ). However, the climatic effect of these intervals on coastal landforms is poorly understood. Here we investigated the response of abrupt and long-lasting climate events during the Marine Isotope Stages 3 and 2 in a 13.8-m thick sand succession located in a large-scale coastal eolian system, the Lencois Maranhenses Dunefield, NE Brazil, where winds and precipitation are anti-phased and controlled by the single action of the ITCZ. A chronology of the sediment overburden determined by optically stimulated luminescence (OSL) dating of 14 sediment samples obtained at 1-m intervals showed ages between 132.2 +/- 7.0 and 12.9 +/- 0.6 thousand years ago in stratigraphic order. A multi-proxy approach based on grain size, surface grain texture, heavy minerals, thermoluminescence (TL) sensitivity, inorganic geochemistry, reflectance, and magnetic parameters from 268 sediment samples collected at 5-cm intervals indicated periods of dune building and stabilization. Significant stabilization periods are synchronous with Heinrich Stadials 6, 4, 3, 2, and 1, and Greenland Stadial 4, within age model uncertainties. Heavy mineral analysis indicated a steady sand source to the dune succession, while TL sensitivity analysis of quartz grains showed the input allochthonous sediments during stadials. The preservation of peak dune activity during the Last Glacial Maximum is attributed to the enduring precipitation brought by the subsequent Heinrich Stadial 1 event. |
format |
Report |
author |
Zular, Andre Sawakuchi, Andre O. Wang, Hong Guedes, Carlos C. F. Hartmann, Gelvam A. Jaqueto, Plinio F. Chiessi, Cristiano M. Cruz, Francisco W. Giannini, Paulo C. F. Daros, Vinicius K. Atencio, Daniel Trindade, Ricardo I. F. |
author_facet |
Zular, Andre Sawakuchi, Andre O. Wang, Hong Guedes, Carlos C. F. Hartmann, Gelvam A. Jaqueto, Plinio F. Chiessi, Cristiano M. Cruz, Francisco W. Giannini, Paulo C. F. Daros, Vinicius K. Atencio, Daniel Trindade, Ricardo I. F. |
author_sort |
Zular, Andre |
title |
The response of a dune succession from Lencois Maranhenses, NE Brazil, to climate changes between MIS 3 and MIS 2 |
title_short |
The response of a dune succession from Lencois Maranhenses, NE Brazil, to climate changes between MIS 3 and MIS 2 |
title_full |
The response of a dune succession from Lencois Maranhenses, NE Brazil, to climate changes between MIS 3 and MIS 2 |
title_fullStr |
The response of a dune succession from Lencois Maranhenses, NE Brazil, to climate changes between MIS 3 and MIS 2 |
title_full_unstemmed |
The response of a dune succession from Lencois Maranhenses, NE Brazil, to climate changes between MIS 3 and MIS 2 |
title_sort |
response of a dune succession from lencois maranhenses, ne brazil, to climate changes between mis 3 and mis 2 |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
publishDate |
2020 |
url |
http://ir.ieecas.cn/handle/361006/12732 https://doi.org/10.1016/j.quaint.2019.12.012 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_relation |
QUATERNARY INTERNATIONAL http://ir.ieecas.cn/handle/361006/12732 doi:10.1016/j.quaint.2019.12.012 |
op_doi |
https://doi.org/10.1016/j.quaint.2019.12.012 |
container_title |
Quaternary International |
container_volume |
537 |
container_start_page |
97 |
op_container_end_page |
111 |
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1768388139973345280 |