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An ophiolite is a section of Earth's oceanic crust and the underlying ... Cawood, P. A. and G. Suhr (1992) "Generation and obduction of ophiolites: constraints from ...
Ophiolite obduction would not be expected as the two plates share a dextral transform boundary. However, the major collision of the Kula/Pacific plate with the Alaskan/Aleutian resulted in the initiation of subduction of the Pacific plate beneath Alaska, with no sign of either obduction or indeed any major manifestation of a ridge being ...
This has now been shown to be supported from other ophiolite bodies such as Oman. In terms of ophiolite emplacement, there was a problem of how to uplift dense oceanic lithosphere through 5–6 km of water and onto continents. [8] This process, however it happened, was coined obduction.
The Samail Ophiolite, also known as the Semail Ophiolite, is a large, ancient geological formation in Oman and the United Arab Emirates in the Arabian Peninsula. [2] It is one of the world's largest and best-exposed segments of oceanic crust , made of volcanic rocks and ultramafic rocks from the Earth's upper mantle that was overthrust onto the ...
Mirdita Ophiolite, middle Jurassic ophiolite in northern Albania between the Apulian and Pelagonian subcontinents in the Balkan Peninsula [2] Cap Corse ophiolite, Corsica , France Vourinos and Pindos Ophiolites in Northern Greece and their northern extensions (numerous ophiolite bodies) in Albania, Serbia and Bosnia
Locally thrust contacts can be seen showing evidence of northwestward movement between parts of the ophiolite and between the ophiolitic rocks and the metamorphic basement. [8] It has been suggested that the Kennack Gneiss (a mixture of basic and acidic igneous rocks) was formed by partial melting during the obduction of the ophiolite onto the ...
The Coast Range Ophiolite is characterized by obduction of oceanic crust onto land. [2] Most of the rocks in the ophiolite were part of an accretionary wedge on the continental margin of Laurasia that was thrust onto land during the Jurassic through the influence of subduction. [ 3 ]
For instance, the Taitao ophiolite complex is discovered in the westernmost of the Taitao Peninsula (east of the Chile Ridge), about 50 km southeast of the Chile triple junction. This is contributed by the obduction of the Nazca plate produced due to the convergence of the overriding South America Plate and the Chile ridge Tres Montes segment.