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Cenozoic tectonics and evolution of the Euphrates valley in Syria

By
V. G. Trifonov
V. G. Trifonov
1
Geological Institute of the Russian Academy of Sciences (RAS), 7 Pyzhevsky, Moscow 119017, Russia
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D. M. Bachmanov
D. M. Bachmanov
1
Geological Institute of the Russian Academy of Sciences (RAS), 7 Pyzhevsky, Moscow 119017, Russia
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O. Ali
O. Ali
2
General Organization of Remote Sensing, PO Box 12586, Damascus, Syria
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A. E. Dodonov
A. E. Dodonov
1
Geological Institute of the Russian Academy of Sciences (RAS), 7 Pyzhevsky, Moscow 119017, Russia
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T. P. Ivanova
T. P. Ivanova
3
Institute of Dynamics of Geospheres of the RAS, Block 6, 38 Leninsky Ave., Moscow 117334, Russia
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A. A. Syas’ko
A. A. Syas’ko
4
Technical Institute (Branch of the Yakutsk State University), Neryungri, Russia
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A. V. Kachaev
A. V. Kachaev
4
Technical Institute (Branch of the Yakutsk State University), Neryungri, Russia
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N. N. Grib
N. N. Grib
4
Technical Institute (Branch of the Yakutsk State University), Neryungri, Russia
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V. S. Imaev
V. S. Imaev
5
Institute of the Earth’s Crust of the Siberian Branch of the RAS, 128 Lermontov street, Irkutsk 664033, Russia
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M. Ali
M. Ali
2
General Organization of Remote Sensing, PO Box 12586, Damascus, Syria
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A. M. Al-Kafri
A. M. Al-Kafri
2
General Organization of Remote Sensing, PO Box 12586, Damascus, Syria
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Published:
January 01, 2013

Abstract

Late Cenozoic tectonics affected the evolution of the Euphrates river valley in northern Syria. Data on the height and composition of terraces and new K–Ar dating of overlying basalts are presented for the area between the Assad Reservoir and the town of Abou Kamal. The presence of the Late Cenozoic Euphrates Fault, longitudinal with respect to the valley, is established by the lower height of the terraces on the NE side of the valley compared with the same terraces on the SW side. Geophysical profiling (dipole axial sounding; correlation refraction method and georadar) across the southern side of the valley (opposite the town of Ar Raqqa) confirms the offset on the fault as >25 m. Movements along the transverse Rasafeh–El Faid fault zone and the Halabiyeh–Zalabiyeh deformation zone have resulted in local uplift and the splitting of river terraces. During the Pliocene–Early Pleistocene, uplift and strong incision of the Euphrates valley propagated from near the Syrian–Turkish border to near the Iraq–Syrian border. The Euphrates began to deposit alluvium onto the pre-existing low-lying Mesopotamian Foredeep at c. 3.5 Ma. Intense incision began by late Late-Pliocene time to form terrace IV. Comparable incision further downstream began during the Early Pleistocene to form terrace III.

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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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