Abstract
Strings of intrusive peridotite cut through the layered ultramafic cumulates and gabbroic rocks of the Troodos plutonic core. The massive and undeformed peridotite has a typical poikilitic texture with olivine (Fo 84–90) and spinel grains ((Cr* 59–68)) enclosed by oikocrysts of magnesian augite (En51 Wo43 Fs6), orthopyroxene (En 83–87) and calcic plagioclase (An 92–93). Late interstitial pargasitic hornblende is locally abundant.
Bulk chemistry and mineralogy of the poikilitic peridotite are close to those of undepleted mantle lherzolite suggesting that the intrusive rock is the product of extensive melting of a fertile mantle source. The parental magma consisted of a mixture of basaltic melt and mantle residual solid phases such as olivine and spinel. It is postulated that such a magmatic mixture can only be collected in mantle diapirs reaching the base of ophiolite crusts.
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References
Allen, C.R., 1975. The petrology of a portion of the Troodos plutonic complex, Cyprus. Ph.D. thesis, Cambridge University, Cambridge, 161 p.
Basaltic Volcanism Study Project, 1981. Basaltic volcanism on the terrestrial planets. Pergamon Press, Inc., New York, 1286 p.
Benn, K., 1986. Petrology of the Troodos plutonic complex in the Caledonian Falls area, Cyprus. M.Sc. thesis, Laval University, Quebec, 223 p.
Benn, K. and Laurent, R., 1987. Intrusive suite documented in the Troodos ophiolite plutonic complex, Cyprus. Geology, 15: 821–824.
Bonatti, E., Ottonello, G. and Hamlyn, P.R., 1986. Peridotites from the island of Zabargad (St. John), Red Sea: petrology and geochemistry. Journal of Geophysical Research, 91: 599–632.
Bowen, N.L., 1928. The evolution of the igneous rocks. Dover Publ. Inc., New York, 334 p.
Cameron, E.N., 1975. Postcumulus and subsolidus equilibration of chromite and coexisting silicates in the Eastern Bushveld Complex. Geochemica et Cosmochemica Acta, 39: 1021–1033.
Cox, K.G., Bell, J.D. and Pankhurst R.J., 1979. The interpretation of igneous rocks. George Allen & Unwin ltd., London, 450 p.
Dick, H.J.B. and Bullen, T., 1984. Chromian spinel as a petrogenetic indicator in abyssal and alpine-type peridotites and spatially associated lavas. Contributions to Mineralogy and Petrology, 86: 54–76.
Dick, H.J.B., Fisher, R.L. and Bryan, W.B., 1984. Mineralogic variability of the uppermost mantle along mid-ocean ridges. Earth Planetary Sciences Letters, 69: 88–106.
Dion, C., 1987. Géologie de la région de Troodhitissa, complexe plutonique du Troodos, Chypre. M.Sc. thesis, Laval University, Quebec, 280 p.
Fleet, M.E., 1974. Partition of major and minor elements and equilibration in coexisting pyroxenes. Contributions to Mineralogy and Petrology, 44, 259–274.
George, R.P.Jr., 1978. Structural petrology of the Olympus ultramafic complex in the Troodos ophiolite, Cyprus. Geological Society of America Bulletin, 89, 845–865.
Hebert, R. and Laurent, R., 1990. Mineral chemistry of the plutonic section of the Troodos ophiolite: new constraints for genesis of arc-related ophiolites. In: A. Panayiotou (ed), Ophiolites and oceanic lithosphere, Proceedings Symposium Troodos 87, Geological Survey Department, Cyprus: 149–163.
Huebner, J.S., 1980. Pyroxene phase equilibria at low pressure. In: C.T. Prewitt (ed), Pyroxenes, Reviews in Mineralogy, Mineralogical Society of America, 7, 213–288.
Irvine, T.N., 1965. Chromian spinel as a petrogenetic indicator; Part 1, Theory. Canadian Journal of Earth Sciences, 2, 648–671.
Laurent, R., 1990. Parental magma and crystal fractionation modelling of the Cy-4 plutonic rocks, Troodos ophiolite, Cyprus. In: A. Panayiotou (ed), Ophiolites and oceanic litho-sphere, Proceedings Symposium Troodos 87, Geological Survey Department, Cyprus: 139–148.
Laurent, R. and Hebert, R., 1989. Petrological features of gabbroic and ultramafic rocks from deep drill Cy-4, Cyprus. In: I.L. Gibson, J. Malpas, P.T. Robinson and C. Xenophontos (ed), Cyprus Crustal Study Project: Initial Report, Hole Cy-4, Geological Survey of Canada, Paper 88–9, 115–145.
Lindsley, D.H., 1983. Pyroxene thermometry. American Mineralogist, 68, 477–493.
Lindsley, D.H. and Anderson, D.J., 1983. A two pyroxene thermometer. Proceedings of the 13th Lunar and Planetary Science Conference, Part 2. Journal of Geophysical Research, 88 suppl., A887–A906.
Maaloe, S. and Aoki, K., 1977. The major element composition of the upper mantle estimated from the composition of lherzolites. Contributions to Mineralogy and Petrology, 63, 161–173.
Malpas, J., Brace, T. and Dunsworth, S.M., 1989. Structural and petrologic relationships of the Cy-4 drill hole of the Cyprus Crustal Study Project. In: I.L. Gibson, J. Malpas, P.T. Robinson and C. Xenophontos (Eds.), Cyprus Crustal Study Project: Initial Report, Hole Cy-4, Geological Survey of Canada, Paper 88–9,39–67.
Moores, E.M. and Vine, F.J., 1971. The Troodos massif, Cyprus, and other ophiolites as oceanic crust: evaluation and implications. Philosophical Transactions of the Royal Society, London, A-268, 443–466.
Morimoto, N., 1989. Nomenclature of pyroxenes. Canadian Mineralogist, 27, 143–156.
Ringwood, A.E., 1975. Composition and petrology of the earth’s mantle. McGraw-Hill, Inc., New York, 618 p.
Thibault, Y., 1987. Géologie et pétrologie des gabbros et des dykes de la région de Phini, complexe ophiolitique de Troodos, Chypre. M.Sc. thesis, Laval University, Quebec, 225 p
Wilson, R.A.M., 1959. The geology of the Xeros-Troodos area. Geological Survey Department, Cyprus, Memoir 1, 135 p.
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Laurent, R., Dion, C., Thibault, Y. (1991). Structural and Petrological Features of Peridotite Intrusions from the Troodos Ophiolite, Cyprus. In: Peters, T., Nicolas, A., Coleman, R.G. (eds) Ophiolite Genesis and Evolution of the Oceanic Lithosphere. Petrology and Structural Geology, vol 5. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3358-6_10
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DOI: https://doi.org/10.1007/978-94-011-3358-6_10
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