Radtke, Ulrich; Brückner, Helmut:

Investigations on Age and Genesis of Silcretes in Queensland (Australia) - Preliminary Results

In: Earth Surface Processes and Landforms, Jg. 16 (1991) ; Nr. 6, S. 547-554
ISSN: 1096-9837
Zeitschriftenaufsatz / Fach: Geowissenschaften
Rektorat und Verwaltung » Rektorat
Silcretes from Queensland (Australia) were dated by means of the electron spin resonance dating technique. The results range from 1.5 to 10.8 million years; therefore, these silcretes were formed between the upper Miocene and the early Pleistocene. For a conclusive interpretation of the data geochemical and thin section analyses were also carried out. ESR dating of silcretes for the first time offers a direct approach to a chronostratigraphic framework of the genesis of these duricrusts, and of the palaeoclimatic events attributed to them.