PANGAEA_992684 Bulk composition of marine sediment cores MDBT 557 and MDBT 561 from the southern Brazilian continental shelf 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 Bulk composition of marine sediment cores MDBT 557 and MDBT 561 from the southern Brazilian continental shelf 2026-03-09 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.992684 Investigator Felipe Rodrigues Santos feliperod@usp.br Earth Science Event label Latitude of event Longitude of event Date/Time of event Elevation of event AGE Sedimentation rate per year Size fraction 0.063-0.002 mm, silt, mud Carbon, organic, total δ13C Median, grain size geoscientificInformation alkanes Gravity corer La Plata River MDBT_557 MDBT_561 southern Brazilian margin vegetation changes Accelerator mass spectrometry (AMS) Laser diffraction particle size analyzer, Malvern Instruments, Mastersizer 2000 Elemental analyzer, Costech Instruments, ECS 4010 coupled to IRMS Isotope Ratio Mass Spectrometer, Thermo Scientific, Delta V Advantage coupled to Costech ECS 4010 2019-06-02 2019-06-02 Complete -33.79 -33.27 -52.21 -51.3 unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 1110 data points text/tab-separated-values 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

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. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.992684"!

http://en.wikipedia.org/wiki/Kyr AGE DIF 9.4 2026-03-09 2026-03-09