Osl luminescence dating
In this paper we generate chronological constraints through optically stimulated luminescence (OSL) dating on extensive prehistoric stone structures that stretch out in the Arabian Desert and appear as geometric lines, known as the “Works of the Old Men”.Two major types of the “Works” that are common throughout the Arabian Desert are the “wheels” and the more intensively investigated “desert kites”.Here, OSL dating was applied to “wheels” in the Wadi Wisad area, in the eastern badia of Jordan.OSL dating generated ages that fall into the Late Neolithic to Chalcolithic and Early Bronze Age periods. | Calculating Age | Challenges for OSL | Case studies of OSL dating in glacial environments | References | Comments | Another way of dating glacial landforms is optically stimulated luminescence dating (OSL). The OSL signal is reset by exposure to sunlight, so the signal is reset to zero while the sand is being transported (such as in a glacial meltwater stream). We analyse the quartz or feldspar minerals in sand deposits. When these quartz or feldspar minerals are exposed to the ionising radiation emitted by the radioactive isotopes in zircons, electrons within the crystals migrate and become trapped in their crystal structure.
The Luminescence Dating Facility at Victoria University is the only one of its kind in New Zealand and is led by Prof Rewi Newnham and Ningsheng Wang. It is primarily a research facility for the School and for collaborators in New Zealand. Coseismic strike slip at a point during the last four earthquakes on the Wellington fault near Wellington, New Zealand.