Late Permian siliceous hot springs developed on the margin of a restricted epeiric sea : insights into strata-confined silicification in mixed siliciclastic‐carbonate successions.
dc.contributor.author | Varejão, Filipe Giovanini | |
dc.contributor.author | Warren, Lucas Veríssimo | |
dc.contributor.author | Alessandretti, Luciano | |
dc.contributor.author | Rodrigues, Mariza Gomes | |
dc.contributor.author | Riccomini, Claudio | |
dc.contributor.author | Assine, Mario Luis | |
dc.contributor.author | Cury, Leonardo Fadel | |
dc.contributor.author | Faleiros, Frederico Meira | |
dc.contributor.author | Simões, Marcello Guimarães | |
dc.date.accessioned | 2023-08-17T17:53:35Z | |
dc.date.available | 2023-08-17T17:53:35Z | |
dc.date.issued | 2022 | pt_BR |
dc.description.abstract | Hot 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. | pt_BR |
dc.identifier.citation | VAREJÃO, F. G. et al. Late Permian siliceous hot springs developed on the margin of a restricted epeiric sea: insights into strata-confined silicification in mixed siliciclastic‐carbonate successions. Palaeogeography, Palaeoclimatology, Palaeoecology, v. 604, artigo e111213, out. 2022. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0031018222003832>. Acesso em: 15 mar. 2023. | pt_BR |
dc.identifier.doi | https://doi.org/10.1016/j.palaeo.2022.111213 | pt_BR |
dc.identifier.issn | 1872-616X | |
dc.identifier.uri | http://www.repositorio.ufop.br/jspui/handle/123456789/17225 | |
dc.identifier.uri2 | https://www.sciencedirect.com/science/article/pii/S0031018222003832 | pt_BR |
dc.language.iso | en_US | pt_BR |
dc.rights | restrito | pt_BR |
dc.subject | Hot springs | pt_BR |
dc.subject | Hydrothermal fluids | pt_BR |
dc.subject | Intraplate tectonics | pt_BR |
dc.subject | Soft-sediment deformation structures | pt_BR |
dc.subject | Epeiric sea | pt_BR |
dc.title | Late Permian siliceous hot springs developed on the margin of a restricted epeiric sea : insights into strata-confined silicification in mixed siliciclastic‐carbonate successions. | pt_BR |
dc.type | Artigo publicado em periodico | pt_BR |
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