Abstract
Proxy records such as lake sediment sequences provide important data on abrupt environmental changes in the past, but establishing their specific causes from the palaeoenvironmental record can be problematic. Pollen diagrams from southwest Turkey show a mid-late Holocene pollen assemblage zone, designated as the Beyşehir Occupation phase, the onset of which has been 14C dated to ca. 3000 BP (ca. 1250 BC). A second millennium BC date for the start of the Beyşehir Occupation phase can now be confirmed as a result of the discovery of volcanic tephra from the Minoan eruption of Santorini (Thera) in lake sediment cores from the region. Palaeoecological analyses on sediment cores from Gölhisar gölü, a shallow montane lake, indicate that tephra deposition was followed by a sustained response in the aquatic ecosystem, in the form of increased algal productivity. The onset of pollen changes marking the beginning of the Beyşehir Occupation phase was not, on the other hand, precisely coincident with the tephra layer, but rather occurred at least a century later at this site. Despite the paucity of archaeological evidence for Late Bronze Age settlement in the Oro-Mediterranean region of southwest Turkey, it would appear that the second millennium BC saw the start of a period of major human impact on the landscape which continued until the late first millennium AD. The Santorini ash represents an important time-synchronous, stratigraphic marker horizon, but does not appear to have been the immediate cause of the onset of the Beyş ehir Occupation phase.
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Roberts, N., Eastwood, W.J., Lamb, H.F., Tibby, J.C. (1997). The Age and Causes of Mid-Late Holocene Environmental Change in Southwest Turkey. In: Dalfes, H.N., Kukla, G., Weiss, H. (eds) Third Millennium BC Climate Change and Old World Collapse. NATO ASI Series, vol 49. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-60616-8_16
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