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Main Authors: Silva, Rafael Oliveira, Leite, Mariangela, Rudnitzki, Isaac, Soares, Igor, Lopes, Victor, Souza, Mauro Lisboa, Simoes, Heliasio, Frazão, Eugênio, Rojas, Jonathan, Marinho, Marcelo M
Format: Dataset Open Access
Language:en
Published: PANGAEA 2024
Subjects:
Barnacle; Bioclasts; Bioturbation; Brachiopoda; Brazilian Geological Service; Bryozoa; Calcispheres; Calcite cement; carbonates; Classification; Comment of event; Contact area; Coral; Date/Time of event; Dredge; DRG; Dunham classification; Echinodermata; Elevation of event; Elevation of event 2; ERG_009_L2; ERG_011_L2; ERG_021_L1; ERG_024_L1; ERG_024_L2; ERG_025_L2; ERG_030_L1; ERG_031_L1; ERG_038_L2; ERG_041_L2; ERG_044_L2; ERG_046_L1; ERG_051_L1; ERG_061_L2; ERG_065_L1; ERG_069_L1; Event label; Extraclasts; Facies name/code; Foraminifera, benthic; Foraminifera, benthic, large; Foraminifera, encrusting; Foraminifera, planktic; Glauconite; Granulometric; Green algae; Intraclasts; Iron-manganese coating; Iron-manganes oxides; Laser granulometer; Latitude of event; Latitude of event 2; Longitude of event; Longitude of event 2; Marion Dufresne (1995); Matrix; microfacies analyses; Mollusca; Opaque minerals; Ostracoda; Packaging; Phosphate; Porosity; Red algae; Rio Grande Rise; Serpulidae; SGB; Sorting description; Southwest Atlantic; Thin section analysis/measurements; Thin section descriptions (TS); Thin section ID; Total
Online Access:https://doi.org/10.1594/PANGAEA.964804
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Table of Contents:
  • Samples of the summit of the Rio Grande Rise (RGR) were dredged by the Brazilian Geological Survey on board of the Marion Dufresne in 2011. This campaign is part of the de Exploration of the Rio Grande Rise Program (PROERG, in poruguese) that aimed to research the Fe-Mn substrate. Hundereds of decimetric and metric samples of Fe-Mn crusts, carbonate rocks and phosphates were collected by dredge in the West-Central portion of the RGR. The carbonate samples were selected and described macroscopically and then 25 thin sections were made. Percentages of components in the microscopic descriptions were determined using visual estimation charts. The carbonate rocks classification were based on microfacies texture.

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