internayional dating site - Dating quaternary sediments

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Lake Karakul in the eastern Pamirs is a large and closed-basin lake in a partly glaciated catchment.

Two parallel sediment cores were collected from 12 m water depth. This study focuses on the mollusc Glycymeris, which is commonly used to date raised marine deposits through amino acid racemisation (AAR).

OSL, IRSL and p IR-IRSL results were combined with available TL and radiocarbon data sets to propose a chronology for the site.

The agreement between these methods provides key insights into the sedimentological processes involved in the site formation and into the chronology of the human occupations.

The residual doses of glaciofluvial and lateral moraine crest samples were below a few Gy and age overestimations were below a few hundred years.

The ground moraine and low terminal moraine samples had residual doses as high as ~110 Gy, and ages were overestimated by ~15-17 ka.

Our investigations aimed to provide for the first time a chronological framework for the site using luminescence dating methods on different minerals contained in the sediments.

Coarse grains of quartz were dated using the optically stimulated luminescence (OSL) technique, and polymineral fine grains were dated using both infrared (IRSL) and post-infrared (p IR-IRSL) stimulated luminescence signals.

ABSTRACT: The site of La Quina Amont, located in the Charente region, is one of the most important sites in southwestern France for studying major changes in human behaviors from the Middle Paleolithic (MP) to the Early Upper Paleolithic (EUP).

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