Geochemical analyses of microbial carbonates deposited during the Holocene in the South Atlantic

The data refer to the geochemical and isotopic characterization of microbial carbonate in the shallow platform of the South Atlantic Ocean, Espírito Santo - Brazil. Geochemical and isotopic analyses were conducted at the LAMIR Institute of the Universidade Federal do Paraná (LAMIR Institute-UFPR). Major element concentrations were determined in three pulverized samples using X-ray fluorescence (XRF) spectrometry on a Panalytical Axios Max instrument with a 4 kV Rhodium tube. Samples were fused with lithium tetraborate/lithium metaborate and analyzed as fused beads. Results were reported as oxide weight percentages (e.g., SiO₂, CaO, MgO).