Comment on “Evaporitic carbonates in the pre-salt of Santos Basin – Genesis and tectonic implications”

作者: Raphael Pietzsch , Raphael Pietzsch

DOI: 10.1016/J.MARPETGEO.2021.104963

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摘要: Abstract Based on petrography, mineralogy, facies analysis and geochemical data Farias et al. (2019) suggested that syn-depositional hydrothermal fluids generated in part by mantle serpentinisation seepage of brines through the Walvis Ridge–Rio Grande Rise sourced South Atlantic basins, which resulted deposition Barra Velha carbonates Santos Basin, focus their study. However, they seek support for this hypothesis clumped isotope data, does not unequivocally provide evidence interpretation. Furthermore, presented significantly radiogenic 87Sr/86Sr turn do give inference significant mantle-derived fluid sources. Therefore, hypotheses should be carefully reconsidered.

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