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Application of in situ-produced cosmogenic Be and Al to the study of lateritic soil development in tropical forest: theory and examples from Cameroon and Gabon |
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| Authors: | R. Braucher, D. L. Bourl s, E. T. Brown, F. Colin, J. -P. Muller, J. -J. Braun, M. Delaune, A. Edou Minko, C. Lescouet, G. M. Raisbeck,F. Yiou |
| Affiliation: | a CEREGE, Université d'Aix Marseille III, Europôle Méditerranéen de l'Arbois, B.P. 80, 13545 Aix en Provence Cedex 4, France b Large Lakes Observatory, University of Minnesota, Duluth, MN 55812, USA c IRD, UM GECO, CEREGE, Université d'Aix Marseille III, Europôle Méditerranéen de l'Arbois, B.P. 80, 13545 Aix en Provence Cedex 4, France d ORSTOM, Laboratoire de Minéralogie-Cristallographie, Universités de Paris 6 et 7, UA CNRS 09, IPGP, Case 115, 4 Place Jussieu, 75252 Paris Cedex 05, France e ORSTOM, B.P. 1857, Yaoundé, Cameroon f Université de Mavikou, BP 943, Franceville, Gabon g Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, IN2P3-CNRS, Bât. 108, Université Paris-Sud, 91405 Orsay, Cedex France |
| Abstract: | Depth profiles of in situ-produced cosmogenic nuclides, including 10Be (T1/2=1.5×106 years) and 26Al (T1/20.73×106 years), in the upper few meters of the Earth's crust may be used to study surficial processes, quantifying denudation and burial rates and elucidating mechanisms involved in landform evolution and soil formations. In this paper, we discuss the fundamentals of the method and apply it to two lateritic sequences located in African tropical forests. |
| Keywords: | Cosmogenic nuclides Lateritic soil development Tropical forest |
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