Late Permian siliceous hot springs developed on the margin of a restricted epeiric sea : insights into strata-confined silicification in mixed siliciclastic‐carbonate successions.

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Autor(es): dc.creatorVarejão, Filipe Giovanini-
Autor(es): dc.creatorWarren, Lucas Veríssimo-
Autor(es): dc.creatorAlessandretti, Luciano-
Autor(es): dc.creatorRodrigues, Mariza Gomes-
Autor(es): dc.creatorRiccomini, Claudio-
Autor(es): dc.creatorAssine, Mario Luis-
Autor(es): dc.creatorCury, Leonardo Fadel-
Autor(es): dc.creatorFaleiros, Frederico Meira-
Autor(es): dc.creatorSimões, Marcello Guimarães-
Data de aceite: dc.date.accessioned2025-08-21T15:24:28Z-
Data de disponibilização: dc.date.available2025-08-21T15:24:28Z-
Data de envio: dc.date.issued2023-08-17-
Data de envio: dc.date.issued2023-08-17-
Data de envio: dc.date.issued2021-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/jspui/handle/123456789/17225-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0031018222003832-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/j.palaeo.2022.111213-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1013576-
Descrição: dc.descriptionHot springs are sources of carbonate minerals in modern settings; however, few fossil structures are recorded in successions older than the Quaternary due to their enhanced erosional potential. >4500 siliceous mounds are recognized in a well-defined level from the upper part of the Permian Teresina Formation (Parana ́ Basin, SE Brazil). Additionally, a new mound level is here reported for the first time about 15 m below the main occur- rence. Remarkable lithological, mineralogical, paleontological and geochemical features characterize the mounds of both levels, pointing to a hydrothermal origin. Therefore, these structures are here called as hot springs. These were originated subaerially, on the margins of a closing epeiric sea developed on a large intra- continental sag basin. Hydrothermal fluids were sourced from deep circulating basin waters that erupted through intraplate deep-rooted faults. Our data suggests that these hot springs were active during distinct cycles of base level variations. Strata-confined silicification was enhanced during periods of high evaporation and hydrother- mal exudation. Finally, the vertical and lateral facies associations of the Permian hot spring succession are compared with modern sites, and implications for the recognition of syn-depositional hydrothermally precipitated silica in ancient sedimentary basins are discussed.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectHot springs-
Palavras-chave: dc.subjectHydrothermal fluids-
Palavras-chave: dc.subjectIntraplate tectonics-
Palavras-chave: dc.subjectSoft-sediment deformation structures-
Palavras-chave: dc.subjectEpeiric sea-
Título: dc.titleLate Permian siliceous hot springs developed on the margin of a restricted epeiric sea : insights into strata-confined silicification in mixed siliciclastic‐carbonate successions.-
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