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 (2026): Bulk composition of marine sediment cores MDBT 557 and MDBT 561 from the southern Brazilian continental shelf [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.992684
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Published: 2026-03-09 • DOI registered: 2026-03-09
Abstract:
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.
Supplement to:
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 (in review): Holocene composition, origin, and evolution of terrigenous organic matter in the southwestern Atlantic Ocean: Insights about vegetation, climate and oceanographic variations. Paleoceanography and Paleoclimatology
Funding:
São Paulo Research Foundation (FAPESP), grant/award no. 17/20344-7: Mudbelts of Southern and Southeast Brazil: Implications on anthropogenic influences on the marine environment
Coverage:
Median Latitude: -33.530000 * Median Longitude: -51.755000 * South-bound Latitude: -33.790000 * West-bound Longitude: -52.210000 * North-bound Latitude: -33.270000 * East-bound Longitude: -51.300000
Date/Time Start: 2019-06-02T12:20:00 * Date/Time End: 2019-06-02T13:22:00
Minimum Elevation: -90.0 m * Maximum Elevation: -80.0 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Santos, Felipe Rodrigues | |||
| 2 | Latitude of event | Latitude | Santos, Felipe Rodrigues | |||
| 3 | Longitude of event | Longitude | Santos, Felipe Rodrigues | |||
| 4 | Date/Time of event | Date/Time | Santos, Felipe Rodrigues | |||
| 5 | Elevation of event | Elevation | m | Santos, Felipe Rodrigues | ||
| 6 | AGE | Age | ka BP | Santos, Felipe Rodrigues | Accelerator mass spectrometry (AMS) | Geocode |
| 7 | Sedimentation rate per year | SR | cm/a | Santos, Felipe Rodrigues | Laser diffraction particle size analyzer, Malvern Instruments, Mastersizer 2000 | |
| 8 | Size fraction 0.063-0.002 mm, silt, mud | 63-2 µm | % | Santos, Felipe Rodrigues | Laser diffraction particle size analyzer, Malvern Instruments, Mastersizer 2000 | |
| 9 | Carbon, organic, total | TOC | % | Santos, Felipe Rodrigues | Elemental analyzer, Costech Instruments, ECS 4010 coupled to IRMS | |
| 10 | δ13C | δ13C | ‰ PDB | Santos, Felipe Rodrigues | Isotope Ratio Mass Spectrometer, Thermo Scientific, Delta V Advantage coupled to Costech ECS 4010 | vs. VPDB |
| 11 | Median, grain size | D50 | µm | Santos, Felipe Rodrigues | Laser diffraction particle size analyzer, Malvern Instruments, Mastersizer 2000 |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1110 data points