| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m12.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Repository | sid.inpe.br/iris@1912/2005/12.26.11.14 (restricted access) |
| Last Update | 2005:12.26.11.14.00 (UTC) administrator |
| Metadata Repository | sid.inpe.br/iris@1912/2005/12.26.11.14.30 |
| Metadata Last Update | 2018:06.05.00.40.34 (UTC) administrator |
| Secondary Key | INPE-13292-PRE/8534 |
| ISSN | 0037-0746 |
| Citation Key | PazRossMaca:2005:InFaIs |
| Title | An upper aptian saline pan/lake system from the Brazilian equatorial margin: integration of facies and isotopes  |
| Year | 2005 |
| Month | Dec. |
| Access Date | 2024, Apr. 27 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 2018 KiB |
| 2. Context | |
| Author | 1 Paz, J. D. S. 2 Rossetti, Dilce de Fátima 3 Macambira, M. J. B. |
| Group | 1 DSR-INPE-MCT-BR |
| Affiliation | 1 2 Instituto Nacional de Pesquisas Espaciais, Divisão de Sensoriamento Remoto (INPE, DSR) |
| Journal | Sedimentology |
| Volume | 52 |
| Number | 6 |
| Pages | 1303-1321 |
| History (UTC) | 2006-03-24 14:07:34 :: sergio -> administrator :: 2006-09-03 21:43:10 :: administrator -> sergio :: 2007-04-23 21:07:07 :: sergio -> administrator :: 2008-06-09 19:20:36 :: administrator -> marciana :: 2011-10-31 11:52:04 :: marciana -> sergio :: 2011-10-31 11:54:57 :: sergio -> administrator :: 2005 2018-06-05 00:40:34 :: administrator -> sergio :: 2005 |
| 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 | GEOLOGIA Brazil (NE) isotope sedimentary facies sulphur / strontium isotopes non-marine evaporites origin basin water paleohydrology paleocene |
| Abstract | Facies and isotope (Sr and S) data were combined in order to discuss the genesis and palaeohydrology of an Upper Aptian evaporite succession formed during the initial development of an intra-continental rift from northern Brazil. Comparison of facies distribution between two investigated areas shows: (i) stable, well-stratified and hypersaline lakes with periods of anoxia and closure in the eastern margin of the basin, where there was evaporite precipitation only in central lake environments; and (ii) more ephemeral conditions in the eastern margin of the basin, where a saline pan complex developed and evaporite precipitation took place mainly in marginal salinas and surrounding mudflats. In both areas, expansion/contraction cycles developed as sedimentation took place, accompanied by a decrease and then an increase in Sr-87/Sr-86- and delta(34)S-isotope values. This, combined with the wide distribution of Sr- and S-isotope data within individual depositional cycles, as well as petrographic and scanning electronic microscopic (SEM) images, led to the conclusion that diagenesis was not enough to obscure the primary geochemical signature. A non-marine brine source is suggested by Sr-87/Sr-86 ratios between 0.707824 and 0.709280, which are higher than those from Upper Aptian sea water (i.e. between 0.70720 and 0.70735). The delta(34)S value varies from 16.12 to 17.89 parts per thousand in the eastern margin of the basin, which is in disagreement with Upper Aptian marine values (13 to 16 parts per thousand). Both geochemical tracers were influenced by facies characteristics, and thus a model is provided, where Sr-87/Sr-86 values respond to changes in expansion and contraction episodes of saline pan/lake systems. |
| Area | SRE |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > An upper aptian... |
| 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 | An upper aptian saline.pdf |
| User Group | administrator sergio |
| Visibility | shown |
| Copy Holder | SID/SCD |
| Archiving Policy | denypublisher denyfinaldraft |
| 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. |
| Host Collection | sid.inpe.br/banon/2001/04.06.10.52 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyright creatorhistory descriptionlevel doi e-mailaddress electronicmailaddress format identifier isbn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup resumeid rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url |
| 7. Description control | |
| e-Mail (login) | sergio |
| update | |