Universität zu Köln

Rahimzadeh, Neda, Khormali, Farhad ORCID: 0000-0001-6805-7343, Gribenski, Natacha, Tsukamoto, Sumiko ORCID: 0000-0003-4626-4784, Kehl, Martin, Pint, Anna, Kiani, Farshad and Frechen, Manfred (2019). Timing and development of sand dunes in the Golestan Province, northern Iran-Implications for the Late-Pleistocene history of the Caspian Sea. Aeolian Res., 41. OXFORD: ELSEVIER SCI LTD. ISSN 2212-1684

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Abstract

The Golestan Province, in northern Iran, presents a rich record of aeolian deposits, including thick loess-palaeosol sequences and prominent sand dunes. While the loess chronology in this area is relatively well constrained, the formation time of the dunes remains largely overlooked, despite their potential to provide valuable information in terms of palaeoclimate conditions and Caspian Sea level changes. In this study, we provide the first reconstruction of dune evolution in Golestan Province, based on geomorphic and sedimentological investigations, high resolution granulometric and microfossil analyses, and luminescence dating. Luminescence analysis includes quartz post-infrared pulsed optically stimulated luminescence (Post-IR pulsed OSL) and K-feldspar post-IR infrared stimulated luminescence (pIRIR) measurements. Luminescence ages indicate that the studied dunes accreted within a few thousand years ranging from 10.6 +/- 1.6 ka to 8.4 +/- 1.4 ka, during the Holocene. Based on the geomorphological evidence and geographical setting, the dunes observed in the Caspian lowland are of parabolic type, which would reflect arid to semi-arid palaeoenvironmental conditions with sparse vegetation and predominance of easterly winds at the time of dune formation. Grain size distribution analysis and sedimentological investigations indicate a clear influence of the Caspian coast environment on the dunes development, in addition to probable sediment input from nearby fluvial systems. The spatial and temporal distribution pattern of the studied dunes reflects a quick regression of the Caspian Sea during the Early Holocene, probably following the so-called Mangyshlak regression.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Rahimzadeh, Neda UNSPECIFIED UNSPECIFIED UNSPECIFIED Khormali, Farhad UNSPECIFIED orcid.org/0000-0001-6805-7343 UNSPECIFIED Gribenski, Natacha UNSPECIFIED UNSPECIFIED UNSPECIFIED Tsukamoto, Sumiko UNSPECIFIED orcid.org/0000-0003-4626-4784 UNSPECIFIED Kehl, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Pint, Anna UNSPECIFIED UNSPECIFIED UNSPECIFIED Kiani, Farshad UNSPECIFIED UNSPECIFIED UNSPECIFIED Frechen, Manfred UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-126749
DOI:	10.1016/j.aeolia.2019.07.004
Journal or Publication Title:	Aeolian Res.
Volume:	41
Date:	2019
Publisher:	ELSEVIER SCI LTD
Place of Publication:	OXFORD
ISSN:	2212-1684
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language LOESS-PALEOSOL SEQUENCE; GRAIN-SIZE DISTRIBUTION; COASTAL DUNES; LEVEL CHANGES; LUMINESCENCE-CHRONOLOGY; CLIMATE-CHANGE; PULSED OSL; QUARTZ; FELDSPAR; DEPOSITS Multiple languages Geography, Physical Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/12674