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Related to Ophiolites: Benioff Zone, Turbidites


 (ŏf′ē-ə-līt′, ō′fē-)
Any of a group of rocks, especially mafic and ultramafic igneous rocks, thought to have formed during crustal thinning at a mid-ocean ridge and to have been subsequently thrust onto continental crust.

[French ophiolite : Greek ophis, snake (in reference to the typically greenish serpentine rocks, diabase, and peridotite found in ophiolites) + French -lite, -lite; see -lite.]


(Geological Science) a type of marble containing serpentine, normally used for ornamental purposes
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1]) in the literature (Poliak and Favoino 2004), particularly at Akoumia and Spili sites, possibly due to the presence of ophiolites.
To understand these systems in the deep geological past it is necessary to work on ancient examples of detachment faults in ophiolites, slices of oceanic lithosphere that have been emplaced tectonically onto continental margins and which expose ocean floor structures in 3-D.
Ophiolites are rare sequences of rocks formed when tectonic forces pushed upward a section of the Earth's upper mantle, oceanic crust and overlying sediments.
The basement of the region is composed of Paleozoic metamorphosed rocks and Mesozoic ophiolites.
The compositional diversity of Cypriot ceramics can largely be understood in terms of the complex geology of Cyprus (a series of diverse and spatially discrete ophiolites, limestones and volcanic intrusions).
As regards the bulk of the ophiolites rocks are composed of mafic and ultramafic rocks.
The rock lithology varies from Permian to Upper Cretaceous-fractured Hawasina Complex and Semail Ophiolites in Masfut, Quaternary eolian sand in Manama and Quaternary sand dunes in Ajman city.
Some finds were made in Fms beneath ophiolites in Amanus, on both sides of the Levant Fracture called Kara Su Valley.
To discuss future scientific cooperation, Professor Cloetingh has been invited by the AGEO department and the Department of Geosciences of RWTH chen University, who have also organised a one week field trip around the north of Oman including a large number of sites of geological interest, such as the exposed crust/mantle transition and the ophiolites in Wadi Al Abbyad, carbonate sequences and source rocks and the uplifted coastal terraces along the Omani coastline, an area that is currently part of a tsunami research project conducted by Prof.
The Upper Cretaceous sequence includes (from base to top): Semail ophiolites (serpentine andserpentinized predotite), the oldest exposed rocks in Al-Ain area, Qahlah Formation (red and yellow Unfossiliferous clast-supported conglomerates of serpentized predotite, derived from the Semail ophiolites, Simsima Formation (marine bioclastics limestones with rudists, corals and echinids, it is disconformably overlies the Qahlah Formation (Hamdan and Anan, 1993).
In the western part, the oldest rocks (507-484 Ma) are supra-subductionzone ophiolites of the Baie Verte Oceanic Tract, which are overlain by calc-alkaline volcanic rocks that are intruded by 488-456 Ma arc plutons of the Notre Dame Arc (van Staal et al.
Dr Martin Flower from University of Illinois gave presentation on 'Plate Collision End-games: A Possible Role for Collision-Induced Mantle Extrusion' and said his current work focuses on ophiolites in the complex NW India-Asia syntaxis where a collage of accreted micro-continents is associated with a complex sequence of neo-Tethyan basin closure, in many cases post-dating those associated with the 'hard' of India.