Extended-Range Luminescence Dating of Central and Eastern Amazonia Sandy Terrains
The Amazonia biome hosts upland closed and open vegetation ecosystems, in which the current biogeographical patterns relate to the evolution of the physical landscape. Therefore, understanding the origin and timing of the substrates supporting different ecosystems is indispensable for better compreh...
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| Format: | Article |
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Frontiers Media S.A.
2022-07-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2022.888443/full |
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| author | Fernanda Costa G. Rodrigues Naomi Porat Thays Desiree Mineli Ian Del Río Pontien Niyonzima Luciana Nogueira Fabiano do Nascimento Pupim Fabiano do Nascimento Pupim Cleverson Guizan Silva Paul Baker Sherilyn Fritz Ingo Wahnfried Gustavo Kiefer André Oliveira Sawakuchi |
| author_facet | Fernanda Costa G. Rodrigues Naomi Porat Thays Desiree Mineli Ian Del Río Pontien Niyonzima Luciana Nogueira Fabiano do Nascimento Pupim Fabiano do Nascimento Pupim Cleverson Guizan Silva Paul Baker Sherilyn Fritz Ingo Wahnfried Gustavo Kiefer André Oliveira Sawakuchi |
| author_sort | Fernanda Costa G. Rodrigues |
| collection | DOAJ |
| description | The Amazonia biome hosts upland closed and open vegetation ecosystems, in which the current biogeographical patterns relate to the evolution of the physical landscape. Therefore, understanding the origin and timing of the substrates supporting different ecosystems is indispensable for better comprehension of Amazonian biogeography. Here we used quartz optically stimulated luminescence (OSL) and thermally transferred optically stimulated luminescence (TT-OSL) for dating sandy substrates of closed and open vegetation environments in Central and Eastern Amazonia, from both outcrop and drill core samples (Autazes core: PBAT-15-43). These sandy substrates present ages ranging from 1 ka up to almost 2 Ma, that were primarily interpreted as depositional ages of fluvial terraces. Moreover, ages are discussed in terms of potential geomorphic processes leading to the formation of substrates, such as soil mixing and apparent age of quartz from the parent bedrock. The coupling between OSL and TT-OSL techniques allow us to date sedimentary deposits covering the whole Quaternary, which implies a new time window for the Amazonia history. |
| first_indexed | 2024-04-13T14:38:52Z |
| format | Article |
| id | doaj.art-67dcb86e5de7470992772cfe40305dd7 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-13T14:38:52Z |
| publishDate | 2022-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-67dcb86e5de7470992772cfe40305dd72022-12-22T02:42:57ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632022-07-011010.3389/feart.2022.888443888443Extended-Range Luminescence Dating of Central and Eastern Amazonia Sandy TerrainsFernanda Costa G. Rodrigues0Naomi Porat1Thays Desiree Mineli2Ian Del Río3Pontien Niyonzima4Luciana Nogueira5Fabiano do Nascimento Pupim6Fabiano do Nascimento Pupim7Cleverson Guizan Silva8Paul Baker9Sherilyn Fritz10Ingo Wahnfried11Gustavo Kiefer12André Oliveira Sawakuchi13Luminescence and Gamma Spectrometry Laboratory (LEGaL), Institute of Geosciences, University of São Paulo, São Paulo, BrazilGeological Survey of Israel, Jerusalem, IsraelLuminescence and Gamma Spectrometry Laboratory (LEGaL), Institute of Geosciences, University of São Paulo, São Paulo, BrazilLuminescence and Gamma Spectrometry Laboratory (LEGaL), Institute of Geosciences, University of São Paulo, São Paulo, BrazilLuminescence and Gamma Spectrometry Laboratory (LEGaL), Institute of Geosciences, University of São Paulo, São Paulo, BrazilLuminescence and Gamma Spectrometry Laboratory (LEGaL), Institute of Geosciences, University of São Paulo, São Paulo, BrazilLuminescence and Gamma Spectrometry Laboratory (LEGaL), Institute of Geosciences, University of São Paulo, São Paulo, BrazilDepartment of Environmental Sciences, Federal University of São Paulo, São Paulo, BrazilInstitute of Geosciences, Fluminense Federal University, Niterói, BrazilDivision of Earth and Ocean Sciences, Duke University, Durham, NC, United StatesDepartment of Earth and Atmospheric Sciences, University of Nebraska, Lincoln, Durham, NC, United StatesGeosciences Department, Amazonas Federal University, Manaus, BrazilBrazil Potash, Manaus, BrazilLuminescence and Gamma Spectrometry Laboratory (LEGaL), Institute of Geosciences, University of São Paulo, São Paulo, BrazilThe Amazonia biome hosts upland closed and open vegetation ecosystems, in which the current biogeographical patterns relate to the evolution of the physical landscape. Therefore, understanding the origin and timing of the substrates supporting different ecosystems is indispensable for better comprehension of Amazonian biogeography. Here we used quartz optically stimulated luminescence (OSL) and thermally transferred optically stimulated luminescence (TT-OSL) for dating sandy substrates of closed and open vegetation environments in Central and Eastern Amazonia, from both outcrop and drill core samples (Autazes core: PBAT-15-43). These sandy substrates present ages ranging from 1 ka up to almost 2 Ma, that were primarily interpreted as depositional ages of fluvial terraces. Moreover, ages are discussed in terms of potential geomorphic processes leading to the formation of substrates, such as soil mixing and apparent age of quartz from the parent bedrock. The coupling between OSL and TT-OSL techniques allow us to date sedimentary deposits covering the whole Quaternary, which implies a new time window for the Amazonia history.https://www.frontiersin.org/articles/10.3389/feart.2022.888443/fullTT-OSL datingAmazonia sandy terrainsfluvial depositslandscape evolutiongeochronology |
| spellingShingle | Fernanda Costa G. Rodrigues Naomi Porat Thays Desiree Mineli Ian Del Río Pontien Niyonzima Luciana Nogueira Fabiano do Nascimento Pupim Fabiano do Nascimento Pupim Cleverson Guizan Silva Paul Baker Sherilyn Fritz Ingo Wahnfried Gustavo Kiefer André Oliveira Sawakuchi Extended-Range Luminescence Dating of Central and Eastern Amazonia Sandy Terrains Frontiers in Earth Science TT-OSL dating Amazonia sandy terrains fluvial deposits landscape evolution geochronology |
| title | Extended-Range Luminescence Dating of Central and Eastern Amazonia Sandy Terrains |
| title_full | Extended-Range Luminescence Dating of Central and Eastern Amazonia Sandy Terrains |
| title_fullStr | Extended-Range Luminescence Dating of Central and Eastern Amazonia Sandy Terrains |
| title_full_unstemmed | Extended-Range Luminescence Dating of Central and Eastern Amazonia Sandy Terrains |
| title_short | Extended-Range Luminescence Dating of Central and Eastern Amazonia Sandy Terrains |
| title_sort | extended range luminescence dating of central and eastern amazonia sandy terrains |
| topic | TT-OSL dating Amazonia sandy terrains fluvial deposits landscape evolution geochronology |
| url | https://www.frontiersin.org/articles/10.3389/feart.2022.888443/full |
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