What is optically stimulated luminescence dating maryss from paris dating

Circular concentrations of burned stone fragments are widespread in the Sahara, and are generally interpreted as ancient hearths.

These hearths provide a rich resource for reconstructing the pattern and timing of Holocene human occupation of North African drylands.

what is optically stimulated luminescence dating-12

What is optically stimulated luminescence dating

Consequently, the quartz OSL signal should provide a means for determining the time elapsed since last firing of Saharan hearths.

To test the applicability of this approach to Saharan hearths, samples were collected from a site in the Fazzan Basin, and analysed using single-grain OSL.

Equivalent dose–depth profiles through hearth rocks demonstrate that they are sufficiently opaque to preserve a record of ancient firing.

Comparison with unfired parent material indicates that anthropogenic firing of hearth rocks was sufficient to empty the OSL source traps.

The OSL ages for hearth rocks are internally consistent and suggest use around 8 ka.

Our study demonstrates that OSL dating is a viable tool for determining the timing and pattern of Holocene occupation of the Sahara.► OSL ages for the firing of Saharan hearths are presented.

► Full bleaching of hearth stones by anthropogenic firing is demonstrated.

► Ages are consistent within and between hearths, indicating firing at ∼8 ka.

► Hearth dating allows patterns of Saharan occupation by humans to be determined.

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