ORCID
- Mather, Anne: 0000-0001-6634-8681
- Telfer, Matt: 0000-0002-8562-7720
- Stokes, Martin: 0000-0003-3788-4615
Abstract
River terraces represent important records of landscape response to e.g. base-level change and tectonic movement. Both these driving forces are important in the southern Iberian Peninsula. In this study, Optically Stimulated Luminescence (OSL) dating was used to date two principal river terraces in the Tabernas Basin, SE Spain. A total of 23 samples was collected from the fluvial terraces for dating using quartz OSL. Sixteen of the samples could not be dated because of low saturation levels (e.g. typical 2xD0 < 50 Gy). The remaining seven samples (5 fossil and 2 modern analogues) were investigated using both multi-grain and single-grain analysis. Single grain results show that: (i) measurements from multi-grain aliquots overestimate ages by up to ∼ 4 ka for modern analogues and young samples (<5 ka), presumably because (ii) the presence of many saturated grains has biased the multi-grain results to older ages. Despite the unfavourable luminescence characteristics we are able to present the first numerical ages for two terrace aggradation stages in the Tabernas Basin, one at ∼16 ka and the other within the last 2 ka.
DOI
10.1016/j.quageo.2015.05.021
Publication Date
2015-06-10
Publication Title
Quaternary Geochronology
ISSN
1871-1014
Embargo Period
2016-06-10
Organisational Unit
School of Geography, Earth and Environmental Sciences
Recommended Citation
Geach, M. R., Thomsen, K., Buylaert, J., Murray, A., Mather, A., Telfer, M., & Stokes, M. (2015) 'Single-grain and multi-grain OSL dating of river terrace sediments in the Tabernas Basin, SE Spain', Quaternary Geochronology, . Available at: https://doi.org/10.1016/j.quageo.2015.05.021
