Tectonic evolution of Cyprus in its easternmost Mediterranean setting

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Authors:Robertson, A. H. F.
Author Affiliations:Primary:
University of Edinburgh, Department of Geology and Geophysics, Edinburgh, United Kingdom
Other:
University of Hong Kong, China
Volume Title:Proceedings of the Third international conference on the Geology of the eastern Mediterranean
Volume Authors:Panayides, I., editor; Xenophontos, C.; Malpas, J.
Source:Proceedings - ... International Conference on the Geology of the Eastern Mediterranean, Vol.3, p.11-44; Third international conference on the Geology of the eastern Mediterranean, Nicosia, Cyprus, Sept. 23-25, 1998, edited by I. Panayides, C. Xenophontos and J. Malpas. Publisher: Ministry of Agriculture, Natural Resources and Environment, Geological Survey Department, Nicosia, Cyprus. ISBN: 9963-1-7506-6
Publication Date:2000
Note:In English. 175 refs.; illus., incl. sketch maps, sects., strat. col.
Summary:The aim here is to integrate land and marine evidence relevant to an understanding of the tectonic evolution of Cyprus in its context within the easternmost Mediterranean region. Key evidence is summarised, in turn, for western, southern, northern and eastern Cyprus and adjacent offshore areas. The oldest preserved units in Cyprus relate to Triassic rifting of a southerly strand of Neotethys to form a small Red Sea-type ocean basin, bordered by subsiding passive margins. Part of the neighbouring carbonate platform is found in the Kyrenia Range, N Cyprus, whereas deformed base-of-slope and oceanic units are preserved in the Mamonia Complex, W and SW Cyprus. The Troodos ophiolite was created in the Late Cretaceous, probably by spreading above a northward-dipping subduction zone within the southerly Neotethys oceanic basin, offset by a dextral? transform fault. Accreted oceanic crust and pelagic sediments are locally preserved as metamorphic rocks within the Mamonia Complex. The Troodos and Mamonia Complex (also the Moni Melange, S Cyprus) were sutured by a combination of thrusting and strike slip during the Campanian, coeval with partial palaeorotation of the Troodos microplate. In N Cyprus the Kyrenia Range was initially deformed prior to Maastrichtian time, when the area was blanketed with pelagic carbonate intercalated with bimodal volcanics of rift or transtensional origin. During the Eocene, further northward subduction culminated in southward thrusting of the Kyrenia Range. Subduction then jumped southwards initiating the present subduction zone south of Cyprus in the Miocene. Extensional basins formed onshore and offshore in the Late Miocene, probably related to subduction "roll-back". Northward subduction continued during Pliocene time, until arrival of the Eratosthenes Seamount, a continental fragment that had rifted from North Africa during Early Mesozoic time. Collision, combined with serpentinite diapirism, gave rise to focused uplift of the Troodos ophiolite. Collision also influenced coeval uplift of the Kyrenia Range. Away from the collision zone regional basins continue to be extensional, including the Polis graben and the Pegia half-graben onshore, and the Antalya and Cilicia basins, offshore.
Sections:Petrology
Subsections:General
Subjects:Arabian Plate; Cenozoic; Cretaceous; Faults; Mesozoic; Microplates; Paleozoic; Plate tectonics; Quaternary; Rifting; Tectonic elements; Tectonics; Tertiary; Triassic; Troodos Ophiolite; Uplifts; Asia; Cyprus; East Mediterranean; Mediterranean Sea; Middle East; Troodos Massif; Kyrenia Range; Mamonia Complex
Coordinates:N340000 N420000 E0400000 E0180000
Abstract Numbers:02M/3393
Record ID:2001032902
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute.
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