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Optical dating of sediments in Wadi Sabra (SW Jordan)


Klasen, Nicole ; Hilgers, Alexandra ; Schmidt, Christoph ; Bertrams, Manuel ; Schyle, Daniel ; Lehmkuhl, Frank ; Richter, Jürgen ; Radtke, Ulrich:
Optical dating of sediments in Wadi Sabra (SW Jordan).
In: Quaternary Geochronology. Bd. 18 (Dezember 2013) . - S. 9-16.
ISSN 1871-1014
DOI: https://doi.org/10.1016/j.quageo.2013.08.002


Link zum Volltext (externe URL): Volltext

Angaben zu Projekten

Offizieller ProjekttitelProjekt-ID
SFB 806 'Our Way To Europe'SFB806

Projektfinanzierung: Deutsche Forschungsgemeinschaft


At Wadi Sabra (SW Jordan) human occupation dates back to the Palaeolithic and Epipalaeolithic. Although there is stratigraphic correlation based on archaeological finds of Ahmarian origin, numerical age estimates are lacking. We applied single-aliquot optical dating of coarse grained quartz of wadi deposits and investigated the luminescence properties in detail to achieve more accurate age information about the time of human occupation. Weak luminescence signals and scattered dose distributions characterise the multi-grain aliquots. The residual doses of the investigated modern wadi sediment are between 0 and 7 Gy. Moreover, comparison of equivalent dose (De) values of 1 mm and 8 mm aliquots shows higher equivalent doses for the large aliquots. Both experiments indicate that the luminescence signal is partially bleached prior to deposition. The dose distributions of all samples are broadly scattered and have overdispersion values between 25 and 43%, some samples are significantly skewed. The shape of the dose distributions points to other sources of scatter, in addition to partial bleaching. Comparison of 1 mm multi-grain and single-grain data demonstrates that the luminescence signal of one multi-grain aliquot most likely is from a single grain. For this reason, variation in the number of photon counts due to the weak luminescence intensity and variations in beta microdosimetry have a bigger impact on the spread of dose distributions. However, we cannot quantify the particular impact of partial bleaching, weak luminescence intensity and beta microdosimetry. To account for the spread of the dose distribution, we use the central age model to calculate equivalent doses. Age calculations yield results in the range of 30-48 ka.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: Optical dating; Ephemeral deposits; SW Jordan; Quartz; Dose distributions
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Ehemalige Professoren > Lehrstuhl Geomorphologie - Univ.-Prof. Dr. Ludwig Zöller
Profilfelder > Advanced Fields > Ökologie und Umweltwissenschaften
Profilfelder > Advanced Fields > Nichtlineare Dynamik
Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Geomorphologie
Profilfelder > Advanced Fields
Forschungseinrichtungen > Forschungszentren
Titel an der UBT entstanden: Nein
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften, Geologie
Eingestellt am: 11 Jan 2016 11:52
Letzte Änderung: 11 Jan 2016 11:52
URI: https://eref.uni-bayreuth.de/id/eprint/29572