The tempo of Holocene climatic change in the eastern Mediterranean region

New high-resolution crater-lake sediment data from central Turkey

Datos Bibliográficos

ID12265569
AutoresNeil Roberts (0000-0001-5538-8653, autor de correspondencia), Jane M Reed (0000-0002-8242-1380, University of Hull), Melanie J Leng (0000-0003-1115-5166), Catherine Kuzucuoglu (0000-0002-0235-0704, Centre National de la Recherche Scientifique), Michel Fontugne (0000-0001-6056-4850, Commissariat à l'Énergie Atomique et aux Énergies Alternatives), Jacques Bertaux (Institut de Recherche pour le Développement), H E S Woldring, H Woldring, Sytze Bottema (University of Groningen), Stuart Black (0000-0003-1396-4821, University of Reading), Emily Hunt (0000-0002-7844-0001, University of Plymouth), M Karabıyıkoğlu, M Karabiyikoğlu (MTA, Department of Geological Studies, 06520 Ankara, Turkey)
Año2001
Volumen11
Número6
Páginas721-736
Fecha de publicación2001-09-01
Peer ReviewedSí
Open AccessSí
TipoARTICLE
RevistaThe Holocene (JOURNAL)
Identificadores de la revistaISSN: 0959-6836 • E-ISSN: 1477-0911
EditorialSAGE Publishing (PUBLISHER • US)
DOI10.1191/09596830195744
OpenAlexW2167058073
IdiomaEN
Citas recibidas138
Referencias citadas47

This study presents results from a multi-proxy analysis of cores taken in a crater-lake sequence from Eski Acigöl in centr-al Turkey which cover the period from pre-c. 16000 cal. yr BP to the present. The sediments comprise an upper unit of enerally non-laminated, banded to massive silts and peats of mid- to late-Holocene age, overlying a laminated unit of late-Pleistocene to early/mid-Holocenie age. The laminae, comprising mainly aragonite. amorphous silica (diatom frustules) and organic matter were formed in a relatively deep, dilute. meromictic lake. Pollen data indicate an abrupt replacement of Arteyisia-chenopod steppe by grass-oak-terebinth parkland during the period of laminae deposition, marking the start of the Holocene. A gradual increase in tree pollen during the early Holocene came to an end c. 6500 cal. yr BP (U-series and adjusted 14 C timescale), when mesic deciduots taxa declined at the same time as lake levels fell. Human impact on regional vegetation is inferred from a sharp decline in oak around 4500-4000 cal. yr BP. Diatom, isotopic and mineralogical data indicate that during the second half of the Holocene the lake became relatively shallow and oscillated between fresh and brackish/evaporated water conditions. The contrast between wetter early and drier late-Holocene climatic conditions is matched by other eastern and central Mediterranean proxy climate data. While the Eski Acigöl sequence resembles Holocene hydroclimatic changes in the Saharo-Arabian zone and was also apparenitly linlked to orbital forcing, it is unlikely to have had the samlle direct cause, i.e., an expansion and subsequent retreat of monsoon rainfall

Archaeology · Climate change · Crater lake · Diatom · Geography · Holocene · Holocene climatic optimum · Mediterranean climate · Physical geography · Radiocarbon dating · Younger Dryas · Archaeology and ancient environmental studies · Geology and Paleoclimatology Research · Marine and environmental studies · Geology · Oceanography · Paleontology