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Late Pleistocene and Holocene uplift history of Cyprus: implications for active tectonics along the southern margin of the Anatolian microplate

By
R. W. Harrison
R. W. Harrison
1
US Geological Survey, MS926A National Center, Reston, VA 20192, USA
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E. Tsiolakis
E. Tsiolakis
2
Geological Survey Department of Cyprus, Lefkosia 1415, Cyprus
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B. D. Stone
B. D. Stone
1
US Geological Survey, MS926A National Center, Reston, VA 20192, USA
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A. Lord
A. Lord
3
Senckenberg Forschungsinstitut und Naturmuseum, Senckenberganlage 25, D-60325 Frankfurt-am-Main, Germany
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J. P. McGeehin
J. P. McGeehin
1
US Geological Survey, MS926A National Center, Reston, VA 20192, USA
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S. A. Mahan
S. A. Mahan
4
US Geological Survey, Denver Federal Center, Box 25046, MS 974, Denver, CO 80225-0046, USA
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P. Chirico
P. Chirico
1
US Geological Survey, MS926A National Center, Reston, VA 20192, USA
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Published:
January 01, 2013

Abstract

The nature of the southern margin of the Anatolian microplate during the Neogene is complex, controversial and fundamental in understanding active plate-margin tectonics and natural hazards in the Eastern Mediterranean region. Our investigation provides new insights into the Late Pleistocene uplift history of Cyprus and the Troodos Ophiolite. We provide isotopic (14C) and radiogenic (luminescence) dates of outcropping marine sediments in eastern Cyprus that identify periods of deposition during marine isotope stages (MIS) 3, 4, 5 and 6. Past sea-levels indicated by these deposits are c. 95±25 m higher in elevation than estimates of worldwide eustatic sea-level. An uplift rate of c. 1.8 mm/year and possibly as much as c. 4.1 mm/year in the past c. 26–40 ka is indicated. Holocene marine deposits also occur at elevations higher than those expected for past SL and suggest uplift rates of c. 1.2–2.1 mm/year. MIS-3 marine deposits that crop out in southern and western Cyprus indicate uniform island-wide uplift. We propose a model of tectonic wedging at a plate-bounding restraining bend as a mechanism for Late Pleistocene to Holocene uplift of Cyprus; uplift is accommodated by deformation and seismicity along the margins of the Troodos Ophiolite and re-activation of its low-angle, basal shear zone.

Supplementary material:

An expanded description of the procedures used in determining OSL ages for samples given in Table 2 is available at http://www.geolsoc.org.uk/SUP18533.

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Contents

Geological Society, London, Special Publications

Geological Development of Anatolia and the Easternmost Mediterranean Region

A. H. F. Robertson
A. H. F. Robertson
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O. Parlak
O. Parlak
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U. C. Ünlügenç
U. C. Ünlügenç
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Geological Society of London
Volume
372
ISBN electronic:
9781862396357
Publication date:
January 01, 2013

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