Transition from alkaline to calc-alkaline volcanism during evolution of the Paleoproterozoic Francevillian basin of eastern Gabon (Western Central Africa)

Autor: Thiéblemont, Denis, Bouton, Pascal, Préat, Alain, Goujou, Jean-Christian, Tegyey, Monique, Weber, Francis, Ebang Obiang, Michel, Joron, Jean Louis, Treuil, Michel

Publikováno v: In Journal of African Earth Sciences November 2014 99 Part 2:215-227

Reply to the comment by J. Maley, P. Giresse, C. Favier & C. Doumengue on the paper “Geochronological arguments for a close relationship between surficial formation profiles and environmental crisis (c. 3000–2000 BP) in Gabon (Central Africa)”, by D. Thiéblemont et al., 2013 [C.R. Geoscience 345, 272–283]

Autor: Thiéblemont, Denis, Flehoc, Christine, Ebang-Obiang, Michel, Rigollet, Christophe, Prian, Jean-Pierre, Prognon, François

Publikováno v: In Comptes rendus - Géoscience July-August 2014 346(7-8):203-205

New constraints on the age and origin of the sandy to clayey surface cover horizon in Gabon (Central Africa)

Autor: Thiéblemont, Denis, Prognon, François, Rigollet, Christophe, Ebang Obiang, Michel, Fléhoc, Christine, Guerrot, Catherine

Publikováno v: Q8-Colloque international AFEQ Quaternaire N°8 "Variabilité spatiale des environnements quaternaires contraintes, échelles et temporalités"
Q8-Colloque international AFEQ Quaternaire N°8 "Variabilité spatiale des environnements quaternaires contraintes, échelles et temporalités", Feb 2012, Clermont-Ferrand, France

Independently of their underlying basement, the superficial formations of Gabon display a constant organization, showing the superposition of two units: (i) a lower breccia known as the Stone line; (ii) an upper sandy to clayey layer, the Cover Horiz

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::aad5b4ff0edc237132e7251e798ce5e3
https://hal-brgm.archives-ouvertes.fr/hal-00670190