Journal
QUATERNARY GEOCHRONOLOGY
Volume 7, Issue 1, Pages 6-20Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.quageo.2011.09.003
Keywords
Review; OSL; Saturation; Age range; Sensitivity change; TT-OSL; SAR; Thermal stability
Funding
- Climate Change Consortium for Wales [C3W]
Ask authors/readers for more resources
Luminescence dating dating based on measurement of the fast component of the optically stimulated luminescence (OSL) signal of quartz now plays a key role in providing chronological control for late Quaternary sediments. Although highly successful, the method is commonly limited to the last similar to 100 ka due to saturation of the fast component of the OSL signal. In the last few years studies have been undertaken into a new signal from quartz termed the thermally transferred optically stimulated luminescence (TT-OSL) signal. This saturates at far higher radiation doses than does the fast component of the OSL signal, and thus offers the potential to date sediments back to 1 million years (1 Ma) or more. This paper reviews current knowledge of the TT-OSL signal and highlights the complexity of the measurement procedures so far developed, and their related terminology, the lack of knowledge of the thermal stability of the charge, the experimental details of the protocol applied to each group of samples, particularly the temperatures used, the slow rate at which the signal is reset by light, and the continuing need for testing of the method on samples with independent age control beyond the range of radiocarbon. (C) 2011 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available