A Thermo-Compositional Model of the Cratonic Lithosphere of South America: Models of the Upper Mantle, Crust and Sediment Density

DOI

In Finger et al. (2021), we created consistent three dimensional models in terms of temperature, density and composition of the upper mantle of the cratonic South American Platform ("Upper MAntle Model") by combining seismic (Celli et al., 2020, Schaeffer & Lebedev, 2013) and gravity (Förste et al., 2014) data with mineral physics constraints in an iterative integrated inversion approach (Kaban et al., 2014; Tesauro et al., 2014). We further compiled a new crustal model ("Crustal Model"), including sediment and average crustal density and depth to the Moho to correct the gravity field for crustal effects and calculate the residual topography. To obtain these models we used data from the GSC (Global Seismic Catalog, Mooney, 2015 with updates up to 2019). To calculate depth to the Moho, the GSC data were combined with those published by Rivadeneyra-Vera et al. (2019). Here, we share the initial and final models of the upper mantle, sediment density and crust that are discussed in the article as well as the test cases set up in the uncertainty assessment. The upper mantle models are given in six layers centered at 50, 100, 150, 200, 250 and 300 km. All models range from -60.5°N to 15.5°N and -90.5°E to -29.5°E, except for the sediment density model (-59.5°N to 24.5°N and -99.5°E to -25.5°E) with a 1° by 1° lateral resolution. A detailed description of the respective files is given in each subfolder. All data are in ASCII format.

Identifier
DOI https://doi.org/10.5880/GFZ.1.3.2020.006
Related Identifier https://doi.org/10.1093/gji/ggz574
Related Identifier https://doi.org/10.5880/icgem.2015.1
Related Identifier https://doi.org/10.1002/2014GC005483
Related Identifier http://igppweb.ucsd.edu/~gabi/rem.html
Related Identifier https://doi.org/10.1029/2018jb016811
Related Identifier https://doi.org/10.1093/gji/ggt095
Related Identifier https://doi.org/10.1016/j.tecto.2013.01.022
Related Identifier https://doi.org/10.1002/2014GC005484
Related Identifier https://doi.org/10.1016/b978-0-444-53802-4.00010-5
Related Identifier https://doi.org/10.1029/2020GC009307
Metadata Access http://doidb.wdc-terra.org/oaip/oai?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:doidb.wdc-terra.org:7004
Provenance
Creator Finger, Nils-Peter (ORCID: 0000-0002-4407-471X); Kaban, Mikhail K. ORCID logo; Tesauro, Magdala ORCID logo; Haeger, Carina ORCID logo; Mooney, Walter D. ORCID logo; Thomas, Maik
Publisher GFZ Data Services
Contributor Finger, Nils-Peter
Publication Year 2020
Funding Reference Deutsche Forschungsgemeinschaft, 336717379
Rights CC BY 4.0; http://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact Finger, Nils-Peter (German Research Centre for Geosciences, Potsdam, Germany; FU Berlin, Berlin, Germany)
Representation
Resource Type Collection
Version 1.0
Discipline Geosciences
Spatial Coverage (-90.500W, -60.500S, -29.500E, 15.500N); All included models except Sediment Density Model; Sediment Density Model