Depth profiles of in situ-produced cosmogenic nuclides, including 10Be (T(1/2) = 1.5 X 106 years) and 26Al (T(1/2)0.73 X 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. (C) 2000 Elsevier Science B.V. All rights reserved.
Bibliographical noteFunding Information:
We thank J. Lestringuez and D. Deboffle for their continuing expertise in AMS measurements. Fieldwork was facilitated by the logistic support of ORSTOM Centers (Yaoundé and Brazzaville). This work was supported by INSU-CNRS through the DBT Program Thème 1: “Fleuves et érosion” by INSU-CNRS and ORSTOM through the PEGI Program. Tandétron operation is supported by the CNRS, CEA and IN2P3.
- Cosmogenic nuclides
- Lateritic soil development
- Tropical forest