Data Publication

Strontium and osmium isotope, trace element, carbon, nitrogen data from the Early Cretaceous of the Araripe Basin, Brazil

Dantas, Rafaela Cardoso | Parkinson, Ian | Palcu, Dan | Flecker, Rachel

NERC EDS National Geoscience Data Centre

(2025)

Descriptions

Trace element and isotope data measured on 36 sediments that record the opening of the south Atlantic preserved onshore, Brazil. The samples come from two main pre-salt sections within the Araripe Basin close to Juazeiro do Norte, Ceará State: the Três Irmãos quarry which records a lacustrine succession and the younger Sobradinho River Section which is a sequence of organic-rich, ostracod-bearing mudstones. Additional gypsum and ostracod samples, procured from two quarries within the Araripe Basin, were analysed to provide data from the main salt-forming interval. The samples were collected during 2023 by a team from Bristol University (Ian Parkinson, Rachel Flecker), Sao Paolo State University (Rafaela Cardoso Dantas) and University of Utrecht (Dan Palcu). The samples were analysed at Bristol University 2023-24 as part of the PhD project of Rafaela Cardoso Dantas. The aim was to use the Sr isotope and Os isotope data to reconstruct the connectivity between the global ocean and opening South Atlantic. Trace element, carbon and nitrogen analysis were analysed to help reconstruct the environmental conditions in the basin.

Keywords

MSL enriched keywords
Phanerozoic
Mesozoic
Cretaceous
analysis
microchemical analysis
trace elements
whole rock analysis
trace elements
minerals
chemical elements
carbon
measured property
nitrogen
osmium
strontium
sulfate minerals
gypsum
Apparatus
laboratory induced remanent magnetisation measurement
isothermal remanent magnetiser (IRM)
Measured property
remanent magnetisation
isothermal remanent magnetisation (IRM)
MSL vocabulary keywords corresponding to originally assigned keywords
Cretaceous
trace elements
trace elements
carbon
nitrogen
Originally assigned keywords
salt giant
marginal basin
pre-salt
marine gateway
Cretaceous
Sr isotopes
Os isotopes
trace elements
carbon
nitrogen

Metadata


MSL enriched sub domains

geochemistry
paleomagnetism

Source

https://www2.bgs.ac.uk/nationalgeosciencedatacentre/citeddata/catalogue/7e7a227e-6d83-4738-bd4c-10cf28f21ade.html

Source publisher

NERC EDS National Geoscience Data Centre

DOI

10.5285/7e7a227e-6d83-4738-bd4c-10cf28f21ade

Creators

Dantas, Rafaela Cardoso
Personal
Universidade de São Paulo
Parkinson, Ian
Personal
University of Bristol
Palcu, Dan
Personal
Utrecht University
Flecker, Rachel
Personal
University of Bristol

Citation

Dantas, R. C., Parkinson, I., Palcu, D., & Flecker, R. (2025). Strontium and osmium isotope, trace element, carbon, nitrogen data from the Early Cretaceous of the Araripe Basin, Brazil [Dataset]. NERC EDS National Geoscience Data Centre. https://doi.org/10.5285/7E7A227E-6D83-4738-BD4C-10CF28F21ADE


Dates

Submitted 2025-05-06
Issued 2025

Language

- no language entry found -


Funding References

Funder Name Natural Environment Research Council
Funder Identifier https://doi.org/10.13039/501100000270
Award Number NE/X002853/1
Award Title NERC-FAPESP: the Marine Gateways Project - Quantifying the causes and climatic consequences of the opening of the South Atlantic

Locations


Geo location(s)

Brazil