Evidence for euphotic zone anoxia during the deposition of Aptian source rocks based on aryl isoprenoids in petroleum, Sergipe-Alagoas Basin, northeastern Brazil

dc.creatorSousa, GR
dc.creatorSantos, ALS
dc.creatorde Lima, SG
dc.creatorLopes, JAD
dc.creatorReis, FAM
dc.creatorNeto, EVS
dc.creatorChang, HK
dc.date2013
dc.dateOCT
dc.date2014-07-30T17:29:49Z
dc.date2015-11-26T17:43:26Z
dc.date2014-07-30T17:29:49Z
dc.date2015-11-26T17:43:26Z
dc.date.accessioned2018-03-29T00:25:30Z
dc.date.available2018-03-29T00:25:30Z
dc.identifierOrganic Geochemistry. Pergamon-elsevier Science Ltd, v. 63, n. 94, n. 104, 2013.
dc.identifier0146-6380
dc.identifierWOS:000325470100011
dc.identifier10.1016/j.orggeochem.2013.07.009
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/66055
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/66055
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1287590
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFour crude oil samples from the Sergipe-Alagoas Basin, northeastern Brazil, were analyzed using full scan gas chromatography-quadrupole mass spectrometry (GC-qMS) for biomarkers, in order to correlate them using aromatic carotenoids thereby enhancing knowledge about the depositional environment of their source rocks. The geochemical parameters derived from saturated fractions of the oils show evidence of little or no biodegradation and similar thermal maturation (Ts/(Ts + Tm) for terpanes, C-29 alpha beta beta/(alpha beta beta + alpha alpha alpha), C-27, and C-29 20S/(20S + 20R) for steranes). Low pristane/phytane ratios and the abundance of gammacerane and beta-carotane are indicative of an anoxic and saline depositional environment for the source rocks. Moreover, we identified a large range of diagenetic and catagenetic products of the aromatic carotenoid isorenieratene, including C-40, C-33, and C-32 diaryl isoprenoids and aryl isoprenoid derivatives with short side chains and/or additional rings. These results indicate anoxia in the photic zone during the deposition of the source rocks. (c) 2013 Published by Elsevier Ltd.
dc.description63
dc.description94
dc.description104
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionPETROBRAS
dc.descriptionUFPI
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageen
dc.publisherPergamon-elsevier Science Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationOrganic Geochemistry
dc.relationOrg. Geochem.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectMarine Evaporitic Oils
dc.subjectPurple Sulfur Bacteria
dc.subjectCarotenoid Derivatives
dc.subjectMarginal Basins
dc.subjectDiaromatic Carotenoids
dc.subjectMolecular Indicators
dc.subjectBiomarker
dc.subjectSediments
dc.subjectGreen
dc.subjectProducts
dc.titleEvidence for euphotic zone anoxia during the deposition of Aptian source rocks based on aryl isoprenoids in petroleum, Sergipe-Alagoas Basin, northeastern Brazil
dc.typeArtículos de revistas


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