Radiocarbon and optically stimulated luminescence dating based chronology of a polycyclic driftsand sequence at Weerterbergen (SE Netherlands)

Auteur(s) et Affiliation(s)

VAN MOURIK, J.M.

Univ., IBED-Paleoecology, Amsterdam, Pays-Bas

NIEROP, K.G.J.

Univ., Fac. of Geosciences, Dep. of Earth Sciences - Organic Geochemistry, Utrecht, Pays-Bas

VANDENBERGHE, D.A.G.

Univ., Dep. of Geology and Soil Science, Lab. of Mineralogy and petrology, Ghent, Belgique

Description :
To improve the results of radiocarbon dating, the AA. applied fractionated 14C dating, sustained by soil micromorphology and pyrolysis-gas chromatography/mass spectrometry. The results indicate the complexity of the sources and decomposition processes of SOM, and, consequently, provide information as to why radiocarbon dates are not always reliable for the geochronology of driftsand deposits. They then performed an optically stimulated luminescence (OSL) dating study of the driftsand beds in the sequence. This approach yields direct sedimentation ages, and allows differentiating the instable (sand drifting) period from the stable (soil formation) period in each individual cycle of the sequence. Post-depositional mixing of the sands, however, may upset the reliability of the OSL chronology.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2010, vol. 80, n°. 3, p. 170-181, nombre de pages : 12, Références bibliographiques : 47 ref.

Date :
2010

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais