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Quartz OSL dating of loess deposits since the late glacial in the Southeast of Caspian Sea
- Source :
- Quaternary International. 583:39-47
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Here we present loess deposits since the late glacial dated by OSL technique in the southeast of the Caspian Sea, bordering continents of Asia and Europe. Chronology of Holocene loess deposits are rarely reported in Eastern Europe and Western Asia, especially for their spacious mid-latitude adjacent region, between Balkans to the west and Pamirs to the east. In this study, an OSL-based chronology was developed for loess deposits in northern Iranian Plateau, based on the YBD loess profile which locates close to center of hilly Iranian Loess Plateau in the southeast of the Caspian Sea and on the northern slope of the Alborz Mountains. The OSL characteristics and their reliability were investigated on coarse-grained quartz (63–90 μm) of the profile, a preheat plateau test and dose recovery test of which reveal that the lower preheat is suitable for loess equivalent dose determination in the area. In addition, the SAR-OSL is an appropriate methodology for dating loess deposited since the late glacial in situ. With preservation of a complete record of loess accumulation since the late glacial, YBD section contains a potentially valuable paleoclimatic record for Caspian region and hence the vast transitional region between Asia and Europe.
- Subjects :
- 010506 paleontology
geography
Plateau
geography.geographical_feature_category
Geochemistry
Western asia
010502 geochemistry & geophysics
01 natural sciences
Loess
Glacial period
Quartz
Geology
Holocene
Optical dating
0105 earth and related environmental sciences
Earth-Surface Processes
Chronology
Subjects
Details
- ISSN :
- 10406182
- Volume :
- 583
- Database :
- OpenAIRE
- Journal :
- Quaternary International
- Accession number :
- edsair.doi...........249e9bfc495ec6f862c127cfea148261