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Main Authors: Santos, Felipe Rodrigues, Lourenço, Rafael André, Taniguchi, Satie, Martins, César de Castro, Wainer, Ilana E K C, Mahiques, Michel Michaelovitch, Nagai, Renata Hanae, Figueira, Rubens César Lopes, Bouloubassi, Ioanna D, Bicego, Marcia C
Format: Dataset Open Access
Language:en
Published: PANGAEA 2026
Subjects:
Accelerator mass spectrometry (AMS); AGE; alkanes; Brazilian southeastern continental shelf; Carbon, organic, total; Date/Time of event; Elemental analyzer, Costech Instruments, ECS 4010 coupled to IRMS; Elevation of event; Event label; GC; Gravity corer; Isotope Ratio Mass Spectrometer, Thermo Scientific, Delta V Advantage coupled to Costech ECS 4010; La Plata River; Laser diffraction particle size analyzer, Malvern Instruments, Mastersizer 2000; Latitude of event; Longitude of event; MDBT_557; MDBT_561; Median, grain size; Sedimentation rate per year; Size fraction 0.063-0.002 mm, silt, mud; southern Brazilian margin; vegetation changes; δ13C
Online Access:https://doi.org/10.1594/PANGAEA.992684
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Table of Contents:
  • This dataset contains grain-size distribution, total organic carbon (TOC), and bulk stable carbon isotope (δ¹³C-bulk) measurements from the Holocene marine sediment core MDBT 557 and MDBT 561, collected on the southern Brazilian continental shelf. Grain-size analyses were performed using laser diffraction after removal of carbonates and organic matter. TOC and δ¹³C-bulk were determined by elemental analysis–isotope ratio mass spectrometry (EA-IRMS) following acidification to remove inorganic carbon. The data provide information on sedimentological variability and bulk organic matter composition through the Holocene and are intended to support investigations of sediment dynamics, organic carbon burial, and paleoenvironmental changes on the southwestern Atlantic shelf.

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