Show simple item record

dc.contributor.authorda Conceicao, F. T.
dc.contributor.authorBonotto, Daniel Marcos [UNESP]
dc.date.accessioned2014-05-20T15:20:00Z
dc.date.available2014-05-20T15:20:00Z
dc.date.issued2004-04-01
dc.identifierhttp://dx.doi.org/10.1016/j.apgeochem.2003.07.002
dc.identifier.citationApplied Geochemistry. Oxford: Pergamon-Elsevier B.V., v. 19, n. 4, p. 575-591, 2004.
dc.identifier.issn0883-2927
dc.identifier.urihttp://hdl.handle.net/11449/31373
dc.description.abstractThe weathering rate of rocks and chemical dynamics of the Corumbatai River basin, São Paulo State, Brazil, were evaluated using major elements as natural tracers. This basin has serious environmental problems in terms of quality of surface and rainwater, which affect the determination of weathering rate. The Corumbatai River, downstream from Rio Claro City, receives several elements/compounds through anthropogenic activities, with only K, SO42- and alkalinity yielding positive flux values. The negative flux of some anions/cations can be attributed to atmospheric loading mainly related to anthropogenic inputs, providing K a value of 16.7 ton/km(-2)a(-1) for the material removed by weathering in the Corumbatai River basin. This is equivalent to 26 x 10(6) kg of rock being removed each year by the Corumbatai River. The instantaneous flux was found to be a function of discharge, with the majority of dry residue (dissolved load) being transported during the summer (wet) months. The removed material in Corumbatai River basin derives mainly from two sub-basins (Cabegas River and Passa Cinco River), where the sandstones weather more easily than siltstones and claystones in the basin. (C) 2003 Elsevier Ltd. All rights reserved.en
dc.format.extent575-591
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofApplied Geochemistry
dc.sourceWeb of Science
dc.titleWeathering rates and anthropogenic influences in a sedimentary basin, São Paulo State, Brazilen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationUNESP, IGCE, BR-13506900 São Paulo, Brazil
dc.description.affiliationUnespUNESP, IGCE, BR-13506900 São Paulo, Brazil
dc.identifier.doi10.1016/j.apgeochem.2003.07.002
dc.identifier.wosWOS:000220161600004
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Geociências e Ciências Exatas, Rio Claropt
dc.identifier.lattes7430102726026121
unesp.author.lattes7430102726026121
unesp.author.orcid0000-0002-3625-4788[1]
dc.relation.ispartofjcr3.088
dc.relation.ispartofsjr1,016
Localize o texto completo

Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record