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Assessing thermal maturity through a multi-proxy approach: a case study from the Permian Faraghan Formation (Zagros Basin, Southwest Iran)

dc.contributor.authorSpina, Amalia
dc.contributor.authorCirilli, Simonetta
dc.contributor.authorSorci, Andrea
dc.contributor.authorSchito, Andrea
dc.contributor.authorClayton, Geoff
dc.contributor.authorCorrado, Sveva
dc.contributor.authorFernandes, Paulo
dc.contributor.authorGalasso, Francesca
dc.contributor.authorMontesi, Giovanni
dc.contributor.authorPereira, Zelia
dc.contributor.authorRashidi, Mehrab
dc.contributor.authorRettori, Roberto
dc.date.accessioned2022-01-10T14:36:28Z
dc.date.available2022-01-10T14:36:28Z
dc.date.issued2021-11-23
dc.date.updated2021-12-23T15:06:48Z
dc.description.abstractThis study focuses on the thermal maturity of Permian deposits from the Zagros Basin, Southwest Iran, employing both optical methods (Thermal Alteration Index, Palynomorph Darkness Index, Vitrinite Reflectance, UV Fluorescence) and geochemical analyses of organic matter (Rock Eval Pyrolysis and MicroRaman spectroscopy) applied to the Faraghan Formation along two investigated Darreh Yas and Kuh e Faraghan surface sections. Furthermore, an integrated palynofacies and lithofacies analysis was carried out in order to integrate the few studies on the depositional environment. The Faraghan Formation, which is widely distributed in the Zagros area, generally consists of shale intercalated with sandstones and pebble conglomerates in the lower part, followed by a succession of sandstone, siltstone and shaly intercalations and with carbonate levels at the top. The integrated palynofacies and lithofacies data confirm a coastal depositional setting evolving upwards to a shallow marine carbonate environment upwards. Rock Eval Pyrolysis and Vitrinite Reflectance analysis showed that the organic matter from samples of the Darreh Yas and Kuh e Faraghan sections fall in the mature to postmature range with respect to the oil to gas generation window, restricting the thermal maturity range proposed by previous authors. Similar results were obtained with MicroRaman spectroscopy and optical analysis such as Thermal Alteration Index and UV Fluorescence. Palynomorph Darkness Index values were compared with Rock Eval Pyrolysis and vitrinite reflectance values and discussed for the first time in the late stage of oil generation.pt_PT
dc.description.sponsorshipThis research was funded by PRIN (2017RX9XXXY-CIRILLI), by Fondo Ricerca di Base Department of Physics and Geology, University of Perugia (SPIRICBAS2018-SPINA), by the project “Paleontological Studies and Biozonation of Paleozoic Sediments in Central Iran and Zagros Basins” (coordinator R. Rettori) and MIUR grants-SORCI to PhD School of Science and Technology for Physics and Geology (XXXIV Cycle), University of Perugia; Project “Paleontological Studies and Biozonation of Paleozoic Sediments in Central Iran and Zagros Basins” (RETTORI).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifierdoi: 10.3390/geosciences11120484
dc.identifier.citationGeosciences 11 (12): 484 (2021)pt_PT
dc.identifier.doi10.3390/geosciences11120484pt_PT
dc.identifier.issn2076-3263
dc.identifier.urihttp://hdl.handle.net/10400.1/17457
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectSW Iranpt_PT
dc.subjectZagros Basinpt_PT
dc.subjectPermianpt_PT
dc.subjectFaraghan Formationpt_PT
dc.subjectPalynofaciespt_PT
dc.subjectThermal maturitypt_PT
dc.subjectOrganic matterpt_PT
dc.titleAssessing thermal maturity through a multi-proxy approach: a case study from the Permian Faraghan Formation (Zagros Basin, Southwest Iran)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue12pt_PT
oaire.citation.startPage484pt_PT
oaire.citation.titleGeosciencespt_PT
oaire.citation.volume11pt_PT
person.familyNameFernandes
person.givenNamePaulo
person.identifier422469
person.identifier.ciencia-id051D-A133-65D9
person.identifier.orcid0000-0003-4888-0230
person.identifier.ridJ-6577-2014
person.identifier.scopus-author-id57197129025
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationa2d98df3-a9c2-4364-a737-25b4e89df80b
relation.isAuthorOfPublication.latestForDiscoverya2d98df3-a9c2-4364-a737-25b4e89df80b

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