Thermo-Compositional Model of Cratonic Lithosphere and Depth to Moho of Africa

DOI

In Finger et al. (2022), we created consistent three-dimensional models in terms of temperature, density and composition of the upper mantle of the cratonic part of the African continent by combining seismic [Celli et al., 2020] 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]. Further, we calculated a new model of depth to the Moho to correct the gravity field for crustal effects and calculate the residual topography, and provide an update for the average crystalline crust density from Litho1.0 [Pasyanos et al., 2014]. To calculate depth to the Moho, data from the GSC [Global Seismic Catalog, Mooney, 2015 with updates up to 2019] were combined with those published by Globig et al. [2016]. Here, we share data used from the GSC, final models of the upper mantle 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. In addition, density variations determined for the crust are given in an additional layer at 15 km depth. All fields range from -40.5°N to 40.5°N and -20.5°E to 55.5°E with a 1° by 1° lateral resolution. The data is provided in binary format as three netCDF4 files, containing the final results discussed in the paper ("Results_AF"), and the two uncertainty assessment cases for an upwards/downwards shifted Moho ("Results_AF_Moho_up" / "Results_AF_Moho_down"), respectively. In addition, data extracted from "Results_AF" to create the six profiles shown in the main article, and measurements of depth to Moho from the GSC are provided as ASCII formatted .dat files.

Identifier
DOI https://doi.org/10.5880/GFZ.1.3.2021.006
Related Identifier https://doi.org/10.1038/s41467-019-13871-2
Related Identifier https://doi.org/10.5880/ICGEM.2015.1
Related Identifier https://doi.org/10.1002/2016JB012972
Related Identifier https://doi.org/10.1002/2014GC005483
Related Identifier https://doi.org/10.1016/b978-0-444-53802-4.00010-5
Related Identifier https://doi.org/10.1002/2013JB010626
Related Identifier https://doi.org/10.1002/2014GC005484
Metadata Access http://doidb.wdc-terra.org/oaip/oai?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:doidb.wdc-terra.org:7330
Provenance
Creator Finger, Nils-Peter (ORCID: 0000-0002-4407-471X); Kaban, Mikhail K. ORCID logo; Tesauro, Magdala ORCID logo; Mooney, Walter D. ORCID logo; Thomas, Maik
Publisher GFZ Data Services
Contributor Finger, Nils-Peter
Publication Year 2021
Funding Reference Deutsche Forschungsgemeinschaft, 336717379
Rights CC BY 4.0; http://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact Finger, Nils-Peter (GFZ German Research Centre for Geosciences, Potsdam, German; Free University Berlin, Berlin, Germany)
Representation
Resource Type Collection
Discipline Geosciences
Spatial Coverage (-20.500W, -40.500S, 55.500E, 40.500N); All included fields