Results 81 to 90 of about 430 (116)
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Geological Magazine, 1973
SummaryThe Ballantrae complex, variously interpreted in the light of plate tectonics, is reappraised on the basis of comparisons with ophiolites of the Newfoundland Appalachians and the southwestern Pacific. All the main components of a typical ophiolite sequence can be recognized although the sequence has been greatly disturbed by post-emplacement ...
W. R. Church, R. A. Gayer
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SummaryThe Ballantrae complex, variously interpreted in the light of plate tectonics, is reappraised on the basis of comparisons with ophiolites of the Newfoundland Appalachians and the southwestern Pacific. All the main components of a typical ophiolite sequence can be recognized although the sequence has been greatly disturbed by post-emplacement ...
W. R. Church, R. A. Gayer
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Suprasubduction-zone ophiolites: Is there really an ophiolite conundrum?
2008Suprasubduction-zone ophiolites have been recognized in the geologic record for over thirty years. These ophiolites are essentially intact structurally and stratigraphi- cally, show evidence for synmagmatic extension, and contain lavas with geochemical characteristics of arc-volcanic rocks.
Rodney V. Metcalf, John W. Shervais
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The Jurassic South Albanian ophiolites: MOR- vs. SSZ-type ophiolites
Lithos, 2002Within the western belt of the southern Albanian ophiolites, the Voskopoja ophiolite consists of three subunits: Voskopoja, Morava and Rehove. These are predominantly Iherzolites with minor harzburgites and dunites in the mantle section. Above come ultramafic and mafic cumulates including wehrlites, troctolites and olivine gabbros.
Höck, V +4 more
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Oman Ophiolite: The Harzburgite Ophiolite Type
1989Although the first detailed report on the Oman ophiolite is recent (Reinhardt, 1969), it is now one of the best studied complexes and is often considered to be the best example of ophiolites in the world. It is indeed the largest, with a crescent-shaped extension over 500 km in length and 50–100 km in width (fig.3.1 and 3.2).
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Subduction-Zone Ophiolites and Island-Arc Ophiolites
1977Although it is often said that typical ophiolites show a definite pseudostratigraphic sequence of rocks and occur in ancient subduction zones, most ophiolites showing a typical sequence occur outside subduction zones, and most ophiolites in subduction zones do not show a regular sequence.
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Elements, 2014
Ophiolites are a newly documented host of diamonds on Earth. Abundant diamonds have indeed been separated from peridotites and chromitites of ophiolites in China, Myanmar, and Russia. In addition, diamond grains have recently been discovered in chromite from the Cretaceous Luobusa ophiolite (Tibet) and the early Paleozoic Ray-Iz ophiolite (polar Urals,
J.-S. Yang, P. T. Robinson, Y. Dilek
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Ophiolites are a newly documented host of diamonds on Earth. Abundant diamonds have indeed been separated from peridotites and chromitites of ophiolites in China, Myanmar, and Russia. In addition, diamond grains have recently been discovered in chromite from the Cretaceous Luobusa ophiolite (Tibet) and the early Paleozoic Ray-Iz ophiolite (polar Urals,
J.-S. Yang, P. T. Robinson, Y. Dilek
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Northern Philippine Ophiolites: Modern Analogues to Precambrian Ophiolites?
2004Publisher Summary The northern Philippines is a possible modern analogue for some Precambrian greenstone belts. The Philippine islands constitute amateur island arc complex comprising mainly of ophiolites, island arc plutons, volcanics and volcaniclastics, and thick sedimentary basins filled with immature sediments.
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