A tale of two lakes: a multi-proxy comparison of Lateglacial and Holocene environmental change in Cappadocia, Turkey

Roberts, Neil and Allcock, Samantha L. and Arnaud, Fabien and Dean, Jonathan R. and Eastwood, Warren J. and Jones, Matthew D. and Leng, Melanie J. and Metcalfe, Sarah E. and Malet, Emmanuel and Woodbridge, Jessie and Yiğitbaşıoğlu, Hakan (2016) A tale of two lakes: a multi-proxy comparison of Lateglacial and Holocene environmental change in Cappadocia, Turkey. Journal of Quaternary Science, 31 (4). pp. 348-362. ISSN 1099-1417

[img]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Available under Licence Creative Commons Attribution.
Download (3MB) | Preview

Abstract

Individual palaeoenvironmental records represent a combination of regional-scale (e.g. climatic) and site-specific local factors. Here we compare multiple climate proxies from two nearby maar lake records, assuming that common signals are due to regional-scale forcing. A new core sequence from Nar Lake in Turkey is dated by varves and U–Th to the last 13.8 ka. Markedly dry periods during the Lateglacial stadial, at 4.3–3.7 and at 3.2–2.6 ka BP, are associated with peaks in Mg/dolomite, positive δ18O, elevated diatom-inferred electrical conductivity, an absence of laminated sediments and low Quercus/chenopod ratios. Wet phases occurred during the early–mid Holocene and 1.5–0.6 ka BP, characterized by negative δ18O, calcite precipitation, high Ca/Sr ratios, a high percentage of planktonic diatoms, laminated sediments and high Quercus/chenopod ratios. Comparison with the record from nearby Eski Acıgöl shows good overall correspondence for many proxies, especially for δ18O. Differences are related to basin infilling and lake ontogeny at Eski Acıgöl, which consequently fails to register climatic changes during the last 2 ka, and to increased flux of lithogenic elements into Nar Lake during the last 2.6 ka, not primarily climatic in origin. In attempting to separate a regional signal from site-specific ‘noise’, two lakes may therefore be better than one.

Item Type: Article
Keywords: eastern Mediterranean; Holocene; isotopes; lakes; multi-proxy.
Schools/Departments: University of Nottingham UK Campus > Faculty of Social Sciences > School of Geography
Identification Number: https://doi.org/10.1002/jqs.2852
Depositing User: Eprints, Support
Date Deposited: 30 Jun 2016 09:37
Last Modified: 26 Sep 2016 15:36
URI: http://eprints.nottingham.ac.uk/id/eprint/34533

Actions (Archive Staff Only)

Edit View Edit View