The development of a late Cretaceous microplate suture zone in SW Cyprus

Malpas, John; Calon, T.J.; Squires, GC

doi:10.1144/gsl.sp.1993.076.01.08

Cited by 42 publications

(65 citation statements)

References 15 publications

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“…(Stampfli et al 2000) (Fig. 7), confirming a Late Permian onset of thermal subsidence for the East Mediterranean and Ionian Sea basins and the absence of younger thermal events; (3) Triassic MORB found in Cyprus in the Mamonia complex (Malpas et al 1993), certainly derived from the East Mediterranean sea-floor, although a more exotic nature of these basalts (from the Neotethys) cannot be excluded; and (4) Upper Permian Hallstatt-type pelagic limestone, similar to those found in Oman where they sometimes rest directly on MORB …”

Section: A New Interpretation Showing That the Eastmentioning

confidence: 54%

Tethyan oceans

Stampfli

2000

353

174

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Section: A New Interpretation Showing That the Eastmentioning

confidence: 54%

Tethyan oceans

Stampfli

2000

353

174

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“…akinci emplacement of the Mamonia Complex was by strike-slip rather than orthogonal thrusting (Swarbrick 1980). More recently it has become widely accepted that the Mamonia Complex was emplaced by thrusting combined with strike-slip (Robertson and Xenophontos 1993;Malpas et al 1993;Bailey et al 2000). The quest for the 'root zone' of the Mamonia Complex prompted Robertson and Woodcock to begin work in the SW area of the Isparta Angle.…”

Section: International Studiesmentioning

confidence: 99%

Developments in research concerning Mesozoic–Tertiary Tethys and neotectonics in the Isparta Angle, SW Turkey

2003

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The Isparta Angle has played a critical role in the development of concepts concerning the tectonic evolution of the Mesozoic–Tertiary Neotethys in the Eastern Mediterranean region. Following early regional studies, mainly by the Mineral Research and Exploration Institute of Turkey (MTA), during the 1960s and 1970s, a French team mapped the area and confirmed a regional tectonostratigraphy of three great allochthonous systems of mainly Mesozoic–Early Tertiary age, termed the Antalya, Lycian and Hoyran‐Beyşehir‐Hadım nappes. During the 1970s and 1980s a British group studied the Neotethyan evolution of what they termed the Antalya Complex, utilizing knowledge of plate tectonic processes. Throughout the 1970s and 1980s MTA systematically remapped the area at 1:25 000 scale. The root zone of the Antalya allochthon was either a southerly Neotethys, within and to the south of the Isparta Angle, or a northerly Neotethys, many hundreds of kilometres to the north. The southerly origin is nowadays favoured but some questions remain. Attention focused in the 1990s until present to the post‐collisional, neotectonic evolution of the Isparta Angle and its links with the neighbouring Mediterranean Sea. Here, we trace the development of research and the ongoing debates concerning alternative tectonic concepts used to explain the evolution of the Isparta Angle from Mesozoic to Recent time. We conclude by outlining several tectonic models for the evolution of the Antalya allochthon within a southerly Neotethys that require to be tested by future field studies. Copyright © 2003 John Wiley & Sons, Ltd.

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“…We started a new petrochemical study of the Mamonia volcanic rocks using both trace element and isotopic chemistry (Nd, Sr and Pb), in order to check the occurrence of a preserved Late Triassic oceanic crust in Cyprus as proposed by Malpas, Calon & Squires (1993). In this paper, we show that the Late Triassic volcanic rocks of the Mamonia Complex represent the remnants of intra-oceanic island volcanoes which range from LREE-depleted tholeiitic olivine basalts to trachytes through oceanic island tholeiites and clinopyroxene-plagioclase-rich alkali basalts.…”

Section: Introductionmentioning

confidence: 99%

The Mamonia Complex (SW Cyprus) revisited: remnant of Late Triassic intra-oceanic volcanism along the Tethyan southwestern passive margin

et al. 2006

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International audienceUpper Triassic volcanic and sedimentary rocks of the Mamonia Complex in southwestern Cyprus are exposed in erosional windows through the post-Cretaceous cover, where the Mamonia Complex is tectonically imbricated with the Troodos and Akamas ophiolitic suites. Most of these Upper Triassic volcanic rocks have been considered to represent remnants of Triassic oceanic crust and its associated seamounts. New Nd and Pb isotopic data show that the whole Mamonia volcanic suite exhibits features of oceanic island basalts (OIB). Four rock types have been distinguished on the basis of the petrology and chemistry of the rocks. Volcanism began with the eruption of depleted olivine tholeiites (Type 1) and oceanic island tholeiites (Type 2) associated with deep basin siliceous and/or calcareous sediments. The tholeiites were followed by highly phyric alkali basalts (Type 3) interbedded with pelagic Halobia-bearing limestones or white reefal limestones. Strongly LREE-enriched trachytes (Type 4) were emplaced during the final stage of volcanic activity. Nd and Pb isotopic ratios suggest that tholeiites and mildly alkali basalts derived from partial melting of heterogeneous enriched mantle sources. Fractional crystallization alone cannot account for the derivation of trachytes from alkaline basalts. The trachytes could have been derived from the partial melting at depth of mafic material which shares with the alkali basalts similar trace element and isotopic compositions. This is corroborated by the rather similar isotopic compositions of the alkali basalts and trachytes. The correlations observed between incompatible elements (Nb, Th) and {varepsilon}Nd and Pb isotopic initial ratios suggest that the Mamonia suite was derived from the mixing of a depleted mantle (DMM) and an enriched component of High µ (µ = 238U/204Pb, HIMU) type. Models using both Nd and Pb isotopic initial ratios suggest that the depleted tholeiites (Type 1) derived from a DMM source contaminated by an Enriched Mantle Type 2 component (EM2), and that the oceanic tholeiites (Type 2), alkali basalts (Type 3) and trachytes (Type 4) were derived from the mixing of the enriched mantle source of the depleted tholeiites with a HIMU component. None of the Mamonia volcanic rocks show evidence of crustal contamination. The Upper Triassic within-plate volcanism likely erupted in a small southerly Neotethyan basin, located north of the Eratosthenes seamount and likely floored by oceanic crust

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The development of a late Cretaceous microplate suture zone in SW Cyprus

Cited by 42 publications

References 15 publications

Tethyan oceans

Tethyan oceans

Developments in research concerning Mesozoic–Tertiary Tethys and neotectonics in the Isparta Angle, SW Turkey

The Mamonia Complex (SW Cyprus) revisited: remnant of Late Triassic intra-oceanic volcanism along the Tethyan southwestern passive margin

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