Crustal and upper mantle velocity structure of the Hoggar well (Central Sahara, Algeria)

Physics of the Earth and Planetary Interiors

Volumn 118, Issue 1-2, 2000, Pages 111-123

  Ayadi, A ^a   Dorbath, C ^b,c   Lesquer, A ^d   Bezzeghoud, M ^a,e  

^a Centre de Recherche en Astronomie Astrophysique et Geophysique   (Algeria)

^b Et Université de Strasbourg   (France)

^c INSTITUT DE RECHERCHE POUR LE DÉVELOPPEMENT   (France)

^d UMR 7327   (France)

^e UNIVERSITY OF ÉVORA   (Portugal)

Author keywords

Algeria; Hoggar swell; Velocity structure

Indexed keywords

CRUSTAL STRUCTURE; LITHOSPHERIC STRUCTURE; MANTLE STRUCTURE; SEISMIC VELOCITY;

ALGERIA;

EID: 0034058934     PISSN: 00319201     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0031-9201(99)00134-X     Document Type: Article

References (23)

1. Aït Hamou F., Dautria J.M. Le magmatisme Cénozoïque du Hoggar: une synthèse des données disponibles. Mise au point sur l'hypothèse d'un point chaud. Bull. Serv. Carte Geol. Alger. 5(1):1994;49-68.
2. Aït Hamou, F., Dautria, J.M., 1997. Spatiotemporal and compositional variations of the Cenozoic Volcanism in the Ahaggar area: evidence for a hot spot in relation with the African Plate motion. Terra Nova, EUG9, Strasbourg, p. 9.
3. Aki K., Christofferson A., Husebye E.S. Determination of the three-dimensional seismic structure of the lithosphere. J. Geophys. Res. 82:1977;277-296.
4. Bergmingham P.M., Fairhead J.D., Stuart G.W. Gravity study of the Central African Rift System: a model of continental disruption. The Darfur domal uplift and associated Cainozoic volcanism. Tectonophysics. 94:1983;205-222.
5. Black R., Caby R., Moussine-Pouchkine A., Bayer R., Bertrand J.M.L., Boulier A.M., Fabre J., Lesquer A. Evidence for Late Precambrian plate tectonics in West Africa. Nature. 278:1979;223-227.
6. Brown C., Girdler R.W. Interpretation of African gravity and its implication for the breakup of the continents. J. Geophys. Res. 85(B11):1980;6443-6455.
7. Caby R. A review of the In-Ouzzal granulitic terrane (Tuareg shield, Algeria): its significance within the Pan-African Trans-Saharan belt. J. Metamorph. Geol. 14:1996;659-666.
8. Dautria, J.M., Girod, M., 1991. Relationships between magmatism and upper mantle heterogeneities as exemplified by the Hoggar volcanic area (Central Sahara, Southern Algeria). In: Kampuzu, A.B., Lubata, R.T. (Eds.), Magmatism in Extension and Structural Settings. Springer-Verlag.
9. Dautria J.M., Lesquer A. An example of the relationship between rift and dome: recent geodynamic evolution of the Hoggar swell and its nearby regions (Central Sahara, Southern Algeria and Eastern Niger). Tectonophysics. 163:1989;45-61.
10. Dautria, J.M., Lesquer, A., Dupuy, C., Aït Hamou, F., Chikhaoui, M., 1988. Le Bombement du Hoggar dans le Sahara central represente t - il la trace d'un point chaud?, Programme et Résumés, Volcanisme intraplaque. Le Point Chaud de la Reunion.
11. Dorbath, C., Dorbath, L., 1984. Approche sismologique de la structure de la lithosphère en Afrique de l'Ouest. Thesis, U. Paris VI, 307 pp.
12. Dorbath L., Montagner J.P. Upper mantle heterogeneities in Africa deduced from Rayleigh wave dispersion. Phys. Earth Planet. Inter. 32:1983;218-225.
13. Dorbath C., Dorbath L., Fairhead J.D., Stuart G.W. A teleseismic delay time study across the Central African Shear Zone in the Adamawa region of Cameroon. Geophys. J. R. Astron. Soc. 86:1986;751-766.
14. Evans, J.R., Achauer, U., 1993. Teleseismic velocity tomography using the ACH method: theory and application to continental-scale studies. In: Iyer, H.M., Hirahara, K. (Eds.), Seismic Tomography. Chapman & Hall, London, pp. 319-360.
15. Fairhead J.D. A gravity link between the domally uplifted cainozoic volcanic centres of north Africa and its similarity to the east African rift system anomaly. Earth Planet. Sci. Lett. 42:1979;109-113.
16. Granet M., Stoll G., Dorel J., Achauer U., Poupinet G., Fuchs K. New constraints on the Geodynamical Evolution of the Massif Central (France): a mantle plume hypothesis from teleseismic tomography. Geophys. J. Int. 121(1):1995;33-48.
17. Hadiouche O., Jobert N., Montagner J.P. Anisotropy of the African continent inferred from surface waves. Phys. Earth Planet. Inter. 58:1989;61-81.
18. Herrin E. Seismological tables for P phases. Bull. Seismol. Soc. Am. 58:1968;1193-1242.
19. Lesquer A., Vasseur G. Heat-flow constraints on the West African lithosphere structure. Geophys. Res. Lett. 19(6):1992;561-564.
20. Lesquer A., Bourmatte A., Dautria J.M. Deep structure of the Hoggar domal uplift (Central Sahara, South Algeria) from gravity, thermal and petrological data. Tectonophysics. 152:1988;71-87.
21. Lesquer A., Bourmatte A., Dautria J.M. First heat flow determination from the Central Sahara: relationship with the Pan-African belt and Hoggar domal uplift. J. Afr. Earth Sci. 9(1):1989;41-48.
22. Lesquer A., Takherist D., Dautria J.M., Hadiouche O. Geophysical and Petrological evidence for an "anomalous" upper mantle beneath the Sahara basins (Algeria). Earth Planet. Sci. Lett. 96:1990;407-418.
23. Takherist, 1991. Structure crustale, subsidence Mésozoïque et flux de chaleur dans les bassins nord-Sahariens (Algérie): apport de la gravimétrie et des données de puits. Doc. Trav. Centre Geol. Géophys., Montpellier, 29.