| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | plutao.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | J8LNKAN8RW/3D53LQ3 |
| Repository | dpi.inpe.br/plutao/2012/11.28.16.49.49 (restricted access) |
| Last Update | 2013:02.14.15.43.23 (UTC) marciana |
| Metadata Repository | dpi.inpe.br/plutao/2012/11.28.16.49.50 |
| Metadata Last Update | 2018:06.05.00.02.06 (UTC) administrator |
| Secondary Key | INPE--PRE/ |
| DOI | 10.1016/j.sedgeo.2012.09.015 |
| ISSN | 0037-0738 |
| Label | lattes: 0307721738107549 1 RossettiZanCohCohCre:2012:LaPlWe |
| Citation Key | RossettiZaniCoheCrem:2012:LaPlWe |
| Title | A Late Pleistocene-Holocene wetland megafan in the Brazilian Amazonia  |
| Year | 2012 |
| Access Date | 2024, May 04 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 5963 KiB |
| 2. Context | |
| Author | 1 Rossetti, Dilce de Fátima 2 Zani, Hiran 3 Cohen, Marcelo 4 Cremon, Édipo Henrique |
| Resume Identifier | 1 8JMKD3MGP5W/3C9JGTQ |
| Group | 1 DSR-OBT-INPE-MCTI-GOV-BR |
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Author e-Mail Address | 1 rossetti@dsr.inpe.br 2 hzani@dsr.inpe.br 3 4 edipocremon@yahoo.com.br |
| e-Mail Address | rossetti@dsr.inpe.br |
| Journal | Sedimentary Geology |
| Volume | 282 |
| Pages | 276-293 |
| Secondary Mark | A1_ENGENHARIAS_III A2_GEOCIÊNCIAS |
| History (UTC) | 2012-11-28 23:06:30 :: lattes -> marciana :: 2012 2012-12-21 18:12:18 :: marciana -> administrator :: 2012 2013-01-20 15:55:03 :: administrator -> marciana :: 2012 2013-02-14 15:43:23 :: marciana -> administrator :: 2012 2018-06-05 00:02:06 :: administrator -> marciana :: 2012 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Version Type | publisher |
| Keywords | tropical wetland megafan late Pleistocene–Holocene facies model residual morphology monsoonal climate tectonic subsidence |
| Abstract | Despite the growing interest in megafans, definitions provided for this type of environmental setting have not yet been widely agreed upon. A record of sedimentary facies distribution in both space and time including a larger number of analogs is particularly needed for improving megafan facies models. This work focuses on a large fan-like feature from an Amazonian wetland in northern Brazil. Morphological data based on remote sensing, as well as sedimentary facies and radiocarbon analyses, were integrated to propose that this feature is related to a megafan system active during the Late Pleistocene to Holocene. The megafan displays a divergent drainage network, gently-dipping slope, and concave-up and convex-up longitudinal and transverse profiles, respectively. Near surface deposits correspond to fining and coarsening upward sands related to active channels and overbank sand sheets/terminal fan lobes. Sediments are interbedded with abandoned channel/floodplain and lake/pond muds. Morphostructural analyses and drainage anomalies revealed a geological setting affected by reactivation of pre-existing faults contemporaneous with sediment accumulation. Establishment of a megafan system in this wetland most likely occurred within a slightly tectonically subsiding basin under favorable climatic conditions. During wet seasons, high water discharge would have favored sediment transport from highlands into this depositional site. High summer temperatures and drought under a monsoonal regime kept the water levels low. The described megafan could serve as an analog for contemporary tropical wetland megafans formed under a monsoonal climate regime. |
| Area | SRE |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > A Late Pleistocene-Holocene... |
| 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 | 1-s2.0-S0037073812002758-main.pdf |
| User Group | administrator lattes marciana |
| Visibility | shown |
| Archiving Policy | denypublisher denyfinaldraft24 |
| Read Permission | deny from all and allow from 150.163 |
| Update Permission | not transferred |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ER446E |
| Dissemination | WEBSCI; PORTALCAPES; COMPENDEX. |
| Host Collection | dpi.inpe.br/plutao@80/2008/08.19.15.01 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel format isbn lineage mark mirrorrepository month nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarydate session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url |
| 7. Description control | |
| e-Mail (login) | marciana |
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