Jessell Mark auteur aut IRD Begg G. C. auteur aut IRD Miller M. S. auteur aut IRD text journalArticle eng text/pdf born digital access This paper examines existing and newly compiled geophysical representations of the West African Craton (WAC) in terms of its large-scale tectonic architecture. In order to build an interpretation with a significant depth extent we draw upon a range of geophysical data, principally seismic tomographic inversions, receiver functions, gravity and magnetics. We present these results as a series of layers providing a series of depth slices though the cratonic lithosphere. The different geophysical methods suggest partitioning of the WAC into two tectonic elements at the largest scale which is observed in both seismic tomographic images, lithosphere-asthenosphere boundary (LAB) models and long wavelength gravity signals. The different models of the Moho, or crust-mantle boundary, based on these gravity or seismic datasets show little or no correlation, either for short or long-wavelength features, and show little correlation with new receiver function inferred crustal thickness estimates. Manual interpretation of low-wavelength gravity and magnetic data suggest a possible continuation of the WAC across the western margin of the modern boundary, and also highlight distinct domains interpreted to be of Birimian age. specialized West African Craton Seismic tomography Gravity Magnetics Receiver functions Lithosphere AFRIQUE DE L'OUEST 066 064 274 3-24 2016 0301-9268 https://www.documentation.ird.fr/hor/fdi:010067608 10.1016/j.precamres.2015.08.010 0301-9268 [F B010067608] https://www.documentation.ird.fr/hor/fdi:010067608 https://www.documentation.ird.fr/intranet/publi/2016/07/010067608.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2016-08-01 2017-08-23 fdi:010067608 fre