Thermoluminescence and optically stimulated luminescence dating of Spanish dunes
1994; Elsevier BV; Volume: 13; Issue: 5-7 Linguagem: Inglês
10.1016/0277-3791(94)90054-x
ISSN1873-457X
AutoresH.M. Rendell, T. Calderón, Alfredo Pérez‐González, Juan F. Gallardo, Alba Millán, Peter Townsend,
Tópico(s)Planetary Science and Exploration
ResumoThe second largest expanse of sand dunes and sand sheets in inland Spain is found between the valleys of the Rio Jucar and the Rio Guadiana, to the south of Madrid. The dunes in the Guadiana valley on the San Juan alluvial plain are composed of sands or silty clays. The clay dunes are associated with clay-saline playas to the south and southwest of the town of Alcazar de San Juan. Preserved aeolian landforms indicate a multicyclic origin for the aeolian deposits that overlie Upper Pleistocene alluvial deposits. Both the present day and palaeowind directions are dominantly from the west, northwest and southwest. The results of thermoluminescence and optically stimulated luminescence dating of different samples from these dunes are discussed. The dating results exhibit good agreement between the two luminescence methods for most samples. The dates obtained span the last glacial-interglacial cycle and also indicate Late Holocene aeolian activity.
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