气候变化领域集成服务门户(CCPortal): Pleistocene volcanism and the geomorphological record of the Hrazdan valley; central Armenia linking landscape dynamics and the Palaeolithic record

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DOI	10.1016/j.quascirev.2019.105994
	Pleistocene volcanism and the geomorphological record of the Hrazdan valley; central Armenia linking landscape dynamics and the Palaeolithic record
	Sherriff J.E.; Wilkinson K.N.; Adler D.S.; Arakelyan D.; Beverly E.J.; Blockley S.P.E.; Gasparyan B.; Mark D.F.; Meliksetyan K.; Nahapetyan S.; Preece K.J.; Timms R.G.O.
发表日期	2019
ISSN	0277-3791
卷号	226
英文摘要	The Southern Caucasus lies at the intersection of Africa, the Levant and Eurasia, and is thus a region of considerable interest in the study of Pleistocene hominin population dynamics and behaviour. While Palaeolithic archaeological sites in the region such as Dmanisi and Nor Geghi 1 attest to such palaeogeographic significance, a greater understanding of the chronology and nature of climatic and geomorphic changes in the region is needed to fully understand hominin settlement dynamics. The Hrazdan river valley, central Armenia, has the potential to offer such insights given its rich Palaeolithic record and complex history of Pleistocene infill as a result of alluvial, lacustrine, aeolian, and volcanic processes. We therefore present a stratigraphic framework for basin infill and hominin activity during the Pleistocene, based on extensive geomorphological and geological mapping, published chronometric results (40Ar/39Ar and K-Ar), and archaeological survey. We demonstrate that the onset of Pleistocene volcanism in the Gegham Range to the immediate east of the Hrazdan valley occurred around 700 ka BP, after which there were several phases of effusive eruption lasting until 200 ka. Interbedded with lava emplaced by these eruptions are alluvial and lacustrine sequences, some with evidence of pedogenesis and several of which have yielded Palaeolithic artefacts. Taken together these sequences suggest a cyclical model of infill whereby lava flow along the valley resulted in the blockage of the palaeo-Hrazdan river and lake formation in the lea of the lava dams. Breaching of these dams resulted in a shift to predominately fluvial deposition, and the consequent development of floodplain soils. Hominin populations exploited the floodplains at times when the last of these phases coincided with interglacial and interstadial climates, but they also occupied the surrounding valley sides during the same warm, humid phases. © 2019 Elsevier Ltd
英文关键词	40Ar/39Ar chronology; Gegham range; Geomorphology; Palaeogeography; Palaeolithic; Pleistocene; Southern Caucasus; Tectonism; Volcanism
语种	英语
scopus关键词	Dynamics; Floods; Geomorphology; Infill drilling; Stratigraphy; Surveys; Caucasus; Gegham range; Palaeogeography; Palaeolithic; Pleistocene; Tectonism; Volcanism; ^40Ar/^39Ar chronology; Landforms; archaeology; chronology; geological mapping; geomorphology; historical record; hominid; human settlement; landscape change; paleogeography; Paleolithic; Pleistocene; tectonics; volcanism; Armenia [West Asia]; Caucasus; Eurasia; Levant; Mediterranean Region
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151675
作者单位	Centre for Quaternary Research, Department of Geography, Royal Holloway, University of London, Egham, Surrey TW20 0EX, United Kingdom; Department of Archaeology, Anthropology and Geography, University of Winchester, Winchester, SO22 4NR, United Kingdom; Department of Anthropology, Old World Archaeology Program, University of Connecticut, 354 Mansfield Road, Unit 2176, Storrs, CT 06269, United States; Institute of Geological Sciences, National Academy of Sciences of the Republic of Armenia, 24a Marshall Baghramyan Avenue, Yerevan, 0019, Armenia; Department of Earth and Atmospheric Sciences, University of Houston, 507 Cullen Boulevard, Houston, TX 77204-5007, United States; Institute of Archaeology and Ethnography, National Academy of Sciences of the Republic of Armenia, Charents 15, Yerevan, 375019, Armenia; NERC Argon Isotope Facility, Scottish Universities Environmental Research Centre, Scottish Enterprise and Technology Park, Rankine Avenue, East Kilbride, G75 0QF, United Kingdom; Department of Carto...
推荐引用方式 GB/T 7714	Sherriff J.E.,Wilkinson K.N.,Adler D.S.,et al. Pleistocene volcanism and the geomorphological record of the Hrazdan valley; central Armenia linking landscape dynamics and the Palaeolithic record[J],2019,226.
APA	Sherriff J.E..,Wilkinson K.N..,Adler D.S..,Arakelyan D..,Beverly E.J..,...&Timms R.G.O..(2019).Pleistocene volcanism and the geomorphological record of the Hrazdan valley; central Armenia linking landscape dynamics and the Palaeolithic record.Quaternary Science Reviews,226.
MLA	Sherriff J.E.,et al."Pleistocene volcanism and the geomorphological record of the Hrazdan valley; central Armenia linking landscape dynamics and the Palaeolithic record".Quaternary Science Reviews 226(2019).