| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | plutao.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | J8LNKAN8RW/37RDSCE |
| Repository | dpi.inpe.br/plutao@80/2010/07.11.14.14.18 (restricted access) |
| Last Update | 2010:08.12.13.14.01 (UTC) administrator |
| Metadata Repository | dpi.inpe.br/plutao@80/2010/07.11.14.14.19 |
| Metadata Last Update | 2018:06.05.00.13.10 (UTC) administrator |
| Secondary Key | INPE--PRE/ |
| ISSN | 0025-3227 |
| Label | lattes: 0307721738107549 2 CastroRossPess:2010:Fa&a&a |
| Citation Key | CastroRossPess:2010:Fa&#&# |
| Title | Facies, δ13C, δ15N and C/N analyses in a late Quaternary compound estuarine fill, northern Brazil and relation to sea level  |
| Year | 2010 |
| Access Date | 2024, May 18 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 3611 KiB |
| 2. Context | |
| Author | 1 Castro, Darciléa Ferreira 2 Rossetti, Dilce de Fátima 3 Pessenda, Luiz C. R. |
| Resume Identifier | 1 2 8JMKD3MGP5W/3C9JGTQ |
| Group | 1 2 DSR-OBT-INPE-MCT-BR |
| Affiliation | 1 Universidade de São Paulo-USP, Instituto de Geociências – Programa de Geotectônica e Geoquímica 2 Rua do Lago, 562 Cidade Universitária 05508-080 São Paulo, SP, Brazil 3 Instituto Nacional de Pesquisas Espaciais (INPE) 4 Universidade de São Paulo, Laboratório de 14C, Av. Centenário 303, 13416000 Piracicaba, SP, Brazil |
| Author e-Mail Address | 1 2 rossetti@dsr.inpe.br |
| e-Mail Address | rossetti@dsr.inpe.br |
| Journal | Marine Geology |
| Volume | 274 |
| Pages | 135-150 |
| History (UTC) | 2010-07-12 14:42:39 :: lattes -> marciana :: 2010 2010-08-12 13:14:01 :: marciana -> administrator :: 2010 2010-11-17 21:31:47 :: administrator -> marciana :: 2010 2011-05-26 23:58:49 :: marciana -> administrator :: 2010 2018-06-05 00:13:10 :: administrator -> marciana :: 2010 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | isótopos Quaternário paleoambiente Ilha do Marajó estuarine setting sedimentary facies isotopes late Quaternary relative sea-level |
| Abstract | The present work integrates sedimentary facies, 14C dating, δ13C, δ15N, and C/N with geologic and geomorphologic data available from literature. The aim was to characterize the depositional settings of a late Quaternary estuary in northeastern Marajó Island and analyze its evolution within the context of relative sea level fluctuations. The data derive from four continuous cores along a proximal-to-distal transect of a paleoestuary, previously recognized using remote sensing information. Fifteen sediment samples recorded ages ranging from 42,580 ± 1430 to 3184 ± 37 14C yr B.P. Facies analysis indicated fine- to coarse-grained sands with parallel lamination or cross stratification, massive or laminated muds and heterolithic deposits. δ13C (− 28.1 to − 19.7, mean = − 23.0), δ15N (+ 14.8 to + 4.7, mean = + 9.2) and C/N (14.5 to 1.5, mean = 7.9) indicate mostly marine and freshwater phytoplankton sources for the organic matter. The results confirm a large late Quaternary paleoestuary in northeastern Marajó Island. The distribution of δ13C, δ15N, and C/N, together with facies associations, led to identify depositional settings related to fluvial channel, floodplain, tidal channel/tidal flat, central basin, tidal delta, and tidal inlet/sand barrier. These deposits are consistent with a wave-dominated estuary. Variations in stratigraphy and geochemistry are controlled by changes in relative sea level, revealing a main transgression from an undetermined time around 42,000 14C yr B.P. and 29,340 (± 200) 14C yr B.P., which is synchronous to the overall drop in sea level after the last interglacial. Following this period, and probably until 9110 ± 37 14C yr B.P., i.e., during a time interval encompassing two glacial episodes including the Last Glacial and the Younger Dryas, there was a pronounced drop in sea level, recorded by the development of a major erosional discontinuity due to valley re-incision. Sea level rose again until 5464 ± 40 14C yr B.P, just before the main worldwide mid-Holocene transgressive peak. Mid to late Holocene coastal progradation ended the Marajó paleoestuarine history, and promoted the establishment of continental conditions throughout the island. The divergence comparing the Marajó sea level behavior with the eustatic curve allows hypothesizing that post-rifting tectonics along the Brazilian Equatorial margin influenced the sedimentary evolution of the studied paleoestuary. Considering that sedimentary facies in estuarine settings are highly variable both laterally and vertically, the present integration of facies with isotope and elemental analyses was crucial to provide a more precise interpretation of the Late Pleistocene and Holocene Marajó paleoestuary, and analyze its sea level history within the eustatic and tectonic context. . |
| Area | SRE |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Facies, {δ13C,} {δ15N}... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | castro.pdf |
| User Group | administrator lattes marciana |
| Visibility | shown |
| Archiving Policy | denypublisher denyfinaldraft24 |
| Read Permission | deny from all and allow from 150.163 |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ER446E |
| Dissemination | WEBSCI; PORTALCAPES. |
| Host Collection | dpi.inpe.br/plutao@80/2008/08.19.15.01 |
| 6. Notes | |
| Notes | Setores de Atividade: Outras atividades de serviços. |
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel documentstage doi format isbn lineage mark mirrorrepository month nextedition number orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype |
| 7. Description control | |
| e-Mail (login) | marciana |
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